Struct rust_decimal::Decimal
source · [−]#[repr(C)]pub struct Decimal { /* private fields */ }
Expand description
Decimal
represents a 128 bit representation of a fixed-precision decimal number.
The finite set of values of type Decimal
are of the form m / 10e,
where m is an integer such that -296 < m < 296, and e is an integer
between 0 and 28 inclusive.
Implementations
sourceimpl Decimal
impl Decimal
sourcepub const MIN: Decimal
pub const MIN: Decimal
The smallest value that can be represented by this decimal type.
Examples
Basic usage:
assert_eq!(Decimal::MIN, dec!(-79_228_162_514_264_337_593_543_950_335));
sourcepub const MAX: Decimal
pub const MAX: Decimal
The largest value that can be represented by this decimal type.
Examples
Basic usage:
assert_eq!(Decimal::MAX, dec!(79_228_162_514_264_337_593_543_950_335));
sourcepub const NEGATIVE_ONE: Decimal
pub const NEGATIVE_ONE: Decimal
sourcepub const ONE_HUNDRED: Decimal
pub const ONE_HUNDRED: Decimal
sourcepub const ONE_THOUSAND: Decimal
pub const ONE_THOUSAND: Decimal
sourcepub const PI: Decimal
pub const PI: Decimal
A constant representing π as 3.1415926535897932384626433833
Examples
Basic usage:
assert_eq!(Decimal::PI, dec!(3.1415926535897932384626433833));
sourcepub const HALF_PI: Decimal
pub const HALF_PI: Decimal
A constant representing π/2 as 1.5707963267948966192313216916
Examples
Basic usage:
assert_eq!(Decimal::HALF_PI, dec!(1.5707963267948966192313216916));
sourcepub const QUARTER_PI: Decimal
pub const QUARTER_PI: Decimal
A constant representing π/4 as 0.7853981633974483096156608458
Examples
Basic usage:
assert_eq!(Decimal::QUARTER_PI, dec!(0.7853981633974483096156608458));
sourcepub const TWO_PI: Decimal
pub const TWO_PI: Decimal
A constant representing 2π as 6.2831853071795864769252867666
Examples
Basic usage:
assert_eq!(Decimal::TWO_PI, dec!(6.2831853071795864769252867666));
sourcepub const E: Decimal
pub const E: Decimal
A constant representing Euler’s number (e) as 2.7182818284590452353602874714
Examples
Basic usage:
assert_eq!(Decimal::E, dec!(2.7182818284590452353602874714));
sourcepub const E_INVERSE: Decimal
pub const E_INVERSE: Decimal
A constant representing the inverse of Euler’s number (1/e) as 0.3678794411714423215955237702
Examples
Basic usage:
assert_eq!(Decimal::E_INVERSE, dec!(0.3678794411714423215955237702));
sourcepub fn new(num: i64, scale: u32) -> Decimal
pub fn new(num: i64, scale: u32) -> Decimal
Returns a Decimal
with a 64 bit m
representation and corresponding e
scale.
Arguments
num
- An i64 that represents them
portion of the decimal numberscale
- A u32 representing thee
portion of the decimal number.
Panics
This function panics if scale
is > 28.
Example
let pi = Decimal::new(3141, 3);
assert_eq!(pi.to_string(), "3.141");
sourcepub const fn try_new(num: i64, scale: u32) -> Result<Decimal>
pub const fn try_new(num: i64, scale: u32) -> Result<Decimal>
Checked version of Decimal::new
. Will return Err
instead of panicking at run-time.
Example
let max = Decimal::try_new(i64::MAX, u32::MAX);
assert!(max.is_err());
sourcepub fn from_i128_with_scale(num: i128, scale: u32) -> Decimal
pub fn from_i128_with_scale(num: i128, scale: u32) -> Decimal
Creates a Decimal
using a 128 bit signed m
representation and corresponding e
scale.
Arguments
num
- An i128 that represents them
portion of the decimal numberscale
- A u32 representing thee
portion of the decimal number.
Panics
This function panics if scale
is > 28 or if num
exceeds the maximum supported 96 bits.
Example
let pi = Decimal::from_i128_with_scale(3141i128, 3);
assert_eq!(pi.to_string(), "3.141");
sourcepub const fn try_from_i128_with_scale(num: i128, scale: u32) -> Result<Decimal>
pub const fn try_from_i128_with_scale(num: i128, scale: u32) -> Result<Decimal>
Checked version of Decimal::from_i128_with_scale
. Will return Err
instead
of panicking at run-time.
Example
let max = Decimal::try_from_i128_with_scale(i128::MAX, u32::MAX);
assert!(max.is_err());
sourcepub const fn from_parts(
lo: u32,
mid: u32,
hi: u32,
negative: bool,
scale: u32
) -> Decimal
pub const fn from_parts(
lo: u32,
mid: u32,
hi: u32,
negative: bool,
scale: u32
) -> Decimal
Returns a Decimal
using the instances constituent parts.
Arguments
lo
- The low 32 bits of a 96-bit integer.mid
- The middle 32 bits of a 96-bit integer.hi
- The high 32 bits of a 96-bit integer.negative
-true
to indicate a negative number.scale
- A power of 10 ranging from 0 to 28.
Caution: Undefined behavior
While a scale greater than 28 can be passed in, it will be automatically capped by this function at the maximum precision. The library opts towards this functionality as opposed to a panic to ensure that the function can be treated as constant. This may lead to undefined behavior in downstream applications and should be treated with caution.
Example
let pi = Decimal::from_parts(1102470952, 185874565, 1703060790, false, 28);
assert_eq!(pi.to_string(), "3.1415926535897932384626433832");
sourcepub fn from_str_radix(str: &str, radix: u32) -> Result<Self, Error>
pub fn from_str_radix(str: &str, radix: u32) -> Result<Self, Error>
Converts a string slice in a given base to a decimal.
The string is expected to be an optional + sign followed by digits. Digits are a subset of these characters, depending on radix, and will return an error if outside the expected range:
- 0-9
- a-z
- A-Z
Examples
Basic usage:
assert_eq!(Decimal::from_str_radix("A", 16)?.to_string(), "10");
sourcepub fn from_str_exact(str: &str) -> Result<Self, Error>
pub fn from_str_exact(str: &str) -> Result<Self, Error>
Parses a string slice into a decimal. If the value underflows and cannot be represented with the given scale then this will return an error.
Examples
Basic usage:
assert_eq!(Decimal::from_str_exact("0.001")?.to_string(), "0.001");
assert_eq!(Decimal::from_str_exact("0.00000_00000_00000_00000_00000_001")?.to_string(), "0.0000000000000000000000000001");
assert_eq!(Decimal::from_str_exact("0.00000_00000_00000_00000_00000_0001"), Err(Error::Underflow));
sourcepub const fn scale(&self) -> u32
pub const fn scale(&self) -> u32
Returns the scale of the decimal number, otherwise known as e
.
Example
let num = Decimal::new(1234, 3);
assert_eq!(num.scale(), 3u32);
sourcepub const fn mantissa(&self) -> i128
pub const fn mantissa(&self) -> i128
Returns the mantissa of the decimal number.
Example
use rust_decimal_macros::dec;
let num = dec!(-1.2345678);
assert_eq!(num.mantissa(), -12345678i128);
assert_eq!(num.scale(), 7);
sourcepub const fn is_zero(&self) -> bool
pub const fn is_zero(&self) -> bool
Returns true if this Decimal number is equivalent to zero.
Example
let num = Decimal::ZERO;
assert!(num.is_zero());
sourcepub fn set_sign(&mut self, positive: bool)
👎 Deprecated since 1.4.0: please use set_sign_positive
instead
pub fn set_sign(&mut self, positive: bool)
please use set_sign_positive
instead
sourcepub fn set_sign_positive(&mut self, positive: bool)
pub fn set_sign_positive(&mut self, positive: bool)
sourcepub fn set_sign_negative(&mut self, negative: bool)
pub fn set_sign_negative(&mut self, negative: bool)
sourcepub fn rescale(&mut self, scale: u32)
pub fn rescale(&mut self, scale: u32)
Modifies the Decimal
towards the desired scale, attempting to do so without changing the
underlying number itself.
Setting the scale to something less then the current Decimal
s scale will
cause the newly created Decimal
to perform rounding using the MidpointAwayFromZero
strategy.
Scales greater than the maximum precision that can be represented by Decimal
will be
automatically rounded to either Decimal::MAX_PRECISION
or the maximum precision that can
be represented with the given mantissa.
Arguments
scale
: The desired scale to use for the newDecimal
number.
Example
use rust_decimal_macros::dec;
// Rescaling to a higher scale preserves the value
let mut number = dec!(1.123);
assert_eq!(number.scale(), 3);
number.rescale(6);
assert_eq!(number.to_string(), "1.123000");
assert_eq!(number.scale(), 6);
// Rescaling to a lower scale forces the number to be rounded
let mut number = dec!(1.45);
assert_eq!(number.scale(), 2);
number.rescale(1);
assert_eq!(number.to_string(), "1.5");
assert_eq!(number.scale(), 1);
// This function never fails. Consequently, if a scale is provided that is unable to be
// represented using the given mantissa, then the maximum possible scale is used.
let mut number = dec!(11.76470588235294);
assert_eq!(number.scale(), 14);
number.rescale(28);
// A scale of 28 cannot be represented given this mantissa, however it was able to represent
// a number with a scale of 27
assert_eq!(number.to_string(), "11.764705882352940000000000000");
assert_eq!(number.scale(), 27);
sourcepub const fn serialize(&self) -> [u8; 16]
pub const fn serialize(&self) -> [u8; 16]
Returns a serialized version of the decimal number. The resulting byte array will have the following representation:
- Bytes 1-4: flags
- Bytes 5-8: lo portion of
m
- Bytes 9-12: mid portion of
m
- Bytes 13-16: high portion of
m
sourcepub fn deserialize(bytes: [u8; 16]) -> Decimal
pub fn deserialize(bytes: [u8; 16]) -> Decimal
Deserializes the given bytes into a decimal number. The deserialized byte representation must be 16 bytes and adhere to the following convention:
- Bytes 1-4: flags
- Bytes 5-8: lo portion of
m
- Bytes 9-12: mid portion of
m
- Bytes 13-16: high portion of
m
sourcepub fn is_negative(&self) -> bool
👎 Deprecated since 0.6.3: please use is_sign_negative
instead
pub fn is_negative(&self) -> bool
please use is_sign_negative
instead
Returns true
if the decimal is negative.
sourcepub fn is_positive(&self) -> bool
👎 Deprecated since 0.6.3: please use is_sign_positive
instead
pub fn is_positive(&self) -> bool
please use is_sign_positive
instead
Returns true
if the decimal is positive.
sourcepub const fn is_sign_negative(&self) -> bool
pub const fn is_sign_negative(&self) -> bool
Returns true
if the sign bit of the decimal is negative.
Example
assert_eq!(true, Decimal::new(-1, 0).is_sign_negative());
assert_eq!(false, Decimal::new(1, 0).is_sign_negative());
sourcepub const fn is_sign_positive(&self) -> bool
pub const fn is_sign_positive(&self) -> bool
Returns true
if the sign bit of the decimal is positive.
Example
assert_eq!(false, Decimal::new(-1, 0).is_sign_positive());
assert_eq!(true, Decimal::new(1, 0).is_sign_positive());
sourcepub const fn min_value() -> Decimal
👎 Deprecated since 1.12.0: Use the associated constant Decimal::MIN
pub const fn min_value() -> Decimal
Use the associated constant Decimal::MIN
Returns the minimum possible number that Decimal
can represent.
sourcepub const fn max_value() -> Decimal
👎 Deprecated since 1.12.0: Use the associated constant Decimal::MAX
pub const fn max_value() -> Decimal
Use the associated constant Decimal::MAX
Returns the maximum possible number that Decimal
can represent.
sourcepub fn trunc(&self) -> Decimal
pub fn trunc(&self) -> Decimal
Returns a new Decimal
integral with no fractional portion.
This is a true truncation whereby no rounding is performed.
Example
let pi = Decimal::new(3141, 3);
let trunc = Decimal::new(3, 0);
// note that it returns a decimal
assert_eq!(pi.trunc(), trunc);
sourcepub fn fract(&self) -> Decimal
pub fn fract(&self) -> Decimal
Returns a new Decimal
representing the fractional portion of the number.
Example
let pi = Decimal::new(3141, 3);
let fract = Decimal::new(141, 3);
// note that it returns a decimal
assert_eq!(pi.fract(), fract);
sourcepub fn abs(&self) -> Decimal
pub fn abs(&self) -> Decimal
Computes the absolute value of self
.
Example
let num = Decimal::new(-3141, 3);
assert_eq!(num.abs().to_string(), "3.141");
sourcepub fn floor(&self) -> Decimal
pub fn floor(&self) -> Decimal
Returns the largest integer less than or equal to a number.
Example
let num = Decimal::new(3641, 3);
assert_eq!(num.floor().to_string(), "3");
sourcepub fn ceil(&self) -> Decimal
pub fn ceil(&self) -> Decimal
Returns the smallest integer greater than or equal to a number.
Example
let num = Decimal::new(3141, 3);
assert_eq!(num.ceil().to_string(), "4");
let num = Decimal::new(3, 0);
assert_eq!(num.ceil().to_string(), "3");
sourcepub fn max(self, other: Decimal) -> Decimal
pub fn max(self, other: Decimal) -> Decimal
Returns the maximum of the two numbers.
let x = Decimal::new(1, 0);
let y = Decimal::new(2, 0);
assert_eq!(y, x.max(y));
sourcepub fn min(self, other: Decimal) -> Decimal
pub fn min(self, other: Decimal) -> Decimal
Returns the minimum of the two numbers.
let x = Decimal::new(1, 0);
let y = Decimal::new(2, 0);
assert_eq!(x, x.min(y));
sourcepub fn normalize(&self) -> Decimal
pub fn normalize(&self) -> Decimal
Strips any trailing zero’s from a Decimal
and converts -0 to 0.
Example
let number = Decimal::from_str("3.100")?;
assert_eq!(number.normalize().to_string(), "3.1");
sourcepub fn normalize_assign(&mut self)
pub fn normalize_assign(&mut self)
An in place version of normalize
. Strips any trailing zero’s from a Decimal
and converts -0 to 0.
Example
let mut number = Decimal::from_str("3.100")?;
assert_eq!(number.to_string(), "3.100");
number.normalize_assign();
assert_eq!(number.to_string(), "3.1");
sourcepub fn round(&self) -> Decimal
pub fn round(&self) -> Decimal
Returns a new Decimal
number with no fractional portion (i.e. an integer).
Rounding currently follows “Bankers Rounding” rules. e.g. 6.5 -> 6, 7.5 -> 8
Example
// Demonstrating bankers rounding...
let number_down = Decimal::new(65, 1);
let number_up = Decimal::new(75, 1);
assert_eq!(number_down.round().to_string(), "6");
assert_eq!(number_up.round().to_string(), "8");
sourcepub fn round_dp_with_strategy(
&self,
dp: u32,
strategy: RoundingStrategy
) -> Decimal
pub fn round_dp_with_strategy(
&self,
dp: u32,
strategy: RoundingStrategy
) -> Decimal
Returns a new Decimal
number with the specified number of decimal points for fractional
portion.
Rounding is performed using the provided RoundingStrategy
Arguments
dp
: the number of decimal points to round to.strategy
: theRoundingStrategy
to use.
Example
let tax = dec!(3.4395);
assert_eq!(tax.round_dp_with_strategy(2, RoundingStrategy::MidpointAwayFromZero).to_string(), "3.44");
sourcepub fn round_dp(&self, dp: u32) -> Decimal
pub fn round_dp(&self, dp: u32) -> Decimal
Returns a new Decimal
number with the specified number of decimal points for fractional portion.
Rounding currently follows “Bankers Rounding” rules. e.g. 6.5 -> 6, 7.5 -> 8
Arguments
dp
: the number of decimal points to round to.
Example
let pi = dec!(3.1415926535897932384626433832);
assert_eq!(pi.round_dp(2).to_string(), "3.14");
sourcepub fn round_sf(&self, digits: u32) -> Option<Decimal>
pub fn round_sf(&self, digits: u32) -> Option<Decimal>
Returns Some(Decimal)
number rounded to the specified number of significant digits. If
the resulting number is unable to be represented by the Decimal
number then None
will
be returned.
When the number of significant figures of the Decimal
being rounded is greater than the requested
number of significant digits then rounding will be performed using MidpointNearestEven
strategy.
Arguments
digits
: the number of significant digits to round to.
Remarks
A significant figure is determined using the following rules:
- Non-zero digits are always significant.
- Zeros between non-zero digits are always significant.
- Leading zeros are never significant.
- Trailing zeros are only significant if the number contains a decimal point.
Example
use rust_decimal_macros::dec;
let value = dec!(305.459);
assert_eq!(value.round_sf(0), Some(dec!(0)));
assert_eq!(value.round_sf(1), Some(dec!(300)));
assert_eq!(value.round_sf(2), Some(dec!(310)));
assert_eq!(value.round_sf(3), Some(dec!(305)));
assert_eq!(value.round_sf(4), Some(dec!(305.5)));
assert_eq!(value.round_sf(5), Some(dec!(305.46)));
assert_eq!(value.round_sf(6), Some(dec!(305.459)));
assert_eq!(value.round_sf(7), Some(dec!(305.4590)));
assert_eq!(Decimal::MAX.round_sf(1), None);
let value = dec!(0.012301);
assert_eq!(value.round_sf(3), Some(dec!(0.0123)));
sourcepub fn round_sf_with_strategy(
&self,
digits: u32,
strategy: RoundingStrategy
) -> Option<Decimal>
pub fn round_sf_with_strategy(
&self,
digits: u32,
strategy: RoundingStrategy
) -> Option<Decimal>
Returns Some(Decimal)
number rounded to the specified number of significant digits. If
the resulting number is unable to be represented by the Decimal
number then None
will
be returned.
When the number of significant figures of the Decimal
being rounded is greater than the requested
number of significant digits then rounding will be performed using the provided RoundingStrategy.
Arguments
digits
: the number of significant digits to round to.strategy
: if required, the rounding strategy to use.
Remarks
A significant figure is determined using the following rules:
- Non-zero digits are always significant.
- Zeros between non-zero digits are always significant.
- Leading zeros are never significant.
- Trailing zeros are only significant if the number contains a decimal point.
Example
use rust_decimal_macros::dec;
let value = dec!(305.459);
assert_eq!(value.round_sf_with_strategy(0, RoundingStrategy::ToZero), Some(dec!(0)));
assert_eq!(value.round_sf_with_strategy(1, RoundingStrategy::ToZero), Some(dec!(300)));
assert_eq!(value.round_sf_with_strategy(2, RoundingStrategy::ToZero), Some(dec!(300)));
assert_eq!(value.round_sf_with_strategy(3, RoundingStrategy::ToZero), Some(dec!(305)));
assert_eq!(value.round_sf_with_strategy(4, RoundingStrategy::ToZero), Some(dec!(305.4)));
assert_eq!(value.round_sf_with_strategy(5, RoundingStrategy::ToZero), Some(dec!(305.45)));
assert_eq!(value.round_sf_with_strategy(6, RoundingStrategy::ToZero), Some(dec!(305.459)));
assert_eq!(value.round_sf_with_strategy(7, RoundingStrategy::ToZero), Some(dec!(305.4590)));
assert_eq!(Decimal::MAX.round_sf_with_strategy(1, RoundingStrategy::ToZero), Some(dec!(70000000000000000000000000000)));
let value = dec!(0.012301);
assert_eq!(value.round_sf_with_strategy(3, RoundingStrategy::AwayFromZero), Some(dec!(0.0124)));
sourcepub const fn unpack(&self) -> UnpackedDecimal
pub const fn unpack(&self) -> UnpackedDecimal
Convert Decimal
to an internal representation of the underlying struct. This is useful
for debugging the internal state of the object.
Important Disclaimer
This is primarily intended for library maintainers. The internal representation of a
Decimal
is considered “unstable” for public use.
Example
use rust_decimal_macros::dec;
let pi = dec!(3.1415926535897932384626433832);
assert_eq!(format!("{:?}", pi), "3.1415926535897932384626433832");
assert_eq!(format!("{:?}", pi.unpack()), "UnpackedDecimal { \
negative: false, scale: 28, hi: 1703060790, mid: 185874565, lo: 1102470952 \
}");
sourcepub fn from_f32_retain(n: f32) -> Option<Self>
pub fn from_f32_retain(n: f32) -> Option<Self>
Parses a 32-bit float into a Decimal number whilst retaining any non-guaranteed precision.
Typically when a float is parsed in Rust Decimal, any excess bits (after ~7.22 decimal points for f32 as per IEEE-754) are removed due to any digits following this are considered an approximation at best. This function bypasses this additional step and retains these excess bits.
Example
// Usually floats are parsed leveraging float guarantees. i.e. 0.1_f32 => 0.1
assert_eq!("0.1", Decimal::from_f32(0.1_f32).unwrap().to_string());
// Sometimes, we may want to represent the approximation exactly.
assert_eq!("0.100000001490116119384765625", Decimal::from_f32_retain(0.1_f32).unwrap().to_string());
sourcepub fn from_f64_retain(n: f64) -> Option<Self>
pub fn from_f64_retain(n: f64) -> Option<Self>
Parses a 64-bit float into a Decimal number whilst retaining any non-guaranteed precision.
Typically when a float is parsed in Rust Decimal, any excess bits (after ~15.95 decimal points for f64 as per IEEE-754) are removed due to any digits following this are considered an approximation at best. This function bypasses this additional step and retains these excess bits.
Example
// Usually floats are parsed leveraging float guarantees. i.e. 0.1_f64 => 0.1
assert_eq!("0.1", Decimal::from_f64(0.1_f64).unwrap().to_string());
// Sometimes, we may want to represent the approximation exactly.
assert_eq!("0.1000000000000000055511151231", Decimal::from_f64_retain(0.1_f64).unwrap().to_string());
sourceimpl Decimal
impl Decimal
sourcepub fn checked_add(self, other: Decimal) -> Option<Decimal>
pub fn checked_add(self, other: Decimal) -> Option<Decimal>
Checked addition. Computes self + other
, returning None
if overflow occurred.
sourcepub fn saturating_add(self, other: Decimal) -> Decimal
pub fn saturating_add(self, other: Decimal) -> Decimal
Saturating addition. Computes self + other
, saturating at the relevant upper or lower boundary.
sourcepub fn checked_mul(self, other: Decimal) -> Option<Decimal>
pub fn checked_mul(self, other: Decimal) -> Option<Decimal>
Checked multiplication. Computes self * other
, returning None
if overflow occurred.
sourcepub fn saturating_mul(self, other: Decimal) -> Decimal
pub fn saturating_mul(self, other: Decimal) -> Decimal
Saturating multiplication. Computes self * other
, saturating at the relevant upper or lower boundary.
sourcepub fn checked_sub(self, other: Decimal) -> Option<Decimal>
pub fn checked_sub(self, other: Decimal) -> Option<Decimal>
Checked subtraction. Computes self - other
, returning None
if overflow occurred.
sourcepub fn saturating_sub(self, other: Decimal) -> Decimal
pub fn saturating_sub(self, other: Decimal) -> Decimal
Saturating subtraction. Computes self - other
, saturating at the relevant upper or lower boundary.
sourcepub fn checked_div(self, other: Decimal) -> Option<Decimal>
pub fn checked_div(self, other: Decimal) -> Option<Decimal>
Checked division. Computes self / other
, returning None
if overflow occurred.
sourcepub fn checked_rem(self, other: Decimal) -> Option<Decimal>
pub fn checked_rem(self, other: Decimal) -> Option<Decimal>
Checked remainder. Computes self % other
, returning None
if overflow occurred.
Trait Implementations
sourceimpl<'a> AddAssign<&'a Decimal> for Decimal
impl<'a> AddAssign<&'a Decimal> for Decimal
sourcefn add_assign(&mut self, other: &'a Decimal)
fn add_assign(&mut self, other: &'a Decimal)
Performs the +=
operation. Read more
sourceimpl<'a> AddAssign<&'a Decimal> for &'a mut Decimal
impl<'a> AddAssign<&'a Decimal> for &'a mut Decimal
sourcefn add_assign(&mut self, other: &'a Decimal)
fn add_assign(&mut self, other: &'a Decimal)
Performs the +=
operation. Read more
sourceimpl AddAssign<Decimal> for Decimal
impl AddAssign<Decimal> for Decimal
sourcefn add_assign(&mut self, other: Decimal)
fn add_assign(&mut self, other: Decimal)
Performs the +=
operation. Read more
sourceimpl<'a> AddAssign<Decimal> for &'a mut Decimal
impl<'a> AddAssign<Decimal> for &'a mut Decimal
sourcefn add_assign(&mut self, other: Decimal)
fn add_assign(&mut self, other: Decimal)
Performs the +=
operation. Read more
sourceimpl Arbitrary<'_> for Decimal
impl Arbitrary<'_> for Decimal
sourcefn arbitrary(u: &mut Unstructured<'_>) -> ArbitraryResult<Self>
fn arbitrary(u: &mut Unstructured<'_>) -> ArbitraryResult<Self>
Generate an arbitrary value of Self
from the given unstructured data. Read more
sourcefn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>
fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>
Generate an arbitrary value of Self
from the entirety of the given unstructured data. Read more
sourceimpl<'expr> AsExpression<Nullable<Numeric>> for &'expr Decimal
impl<'expr> AsExpression<Nullable<Numeric>> for &'expr Decimal
type Expression = Bound<Nullable<Numeric>, Self>
type Expression = Bound<Nullable<Numeric>, Self>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl AsExpression<Nullable<Numeric>> for Decimal
impl AsExpression<Nullable<Numeric>> for Decimal
type Expression = Bound<Nullable<Numeric>, Self>
type Expression = Bound<Nullable<Numeric>, Self>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl<'expr> AsExpression<Numeric> for &'expr Decimal
impl<'expr> AsExpression<Numeric> for &'expr Decimal
type Expression = Bound<Numeric, Self>
type Expression = Bound<Numeric, Self>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl AsExpression<Numeric> for Decimal
impl AsExpression<Numeric> for Decimal
type Expression = Bound<Numeric, Self>
type Expression = Bound<Numeric, Self>
The expression being returned
sourcefn as_expression(self) -> Self::Expression
fn as_expression(self) -> Self::Expression
Perform the conversion
sourceimpl BorshDeserialize for Decimal where
u32: BorshDeserialize,
u32: BorshDeserialize,
u32: BorshDeserialize,
u32: BorshDeserialize,
impl BorshDeserialize for Decimal where
u32: BorshDeserialize,
u32: BorshDeserialize,
u32: BorshDeserialize,
u32: BorshDeserialize,
sourceimpl BorshSerialize for Decimal where
u32: BorshSerialize,
u32: BorshSerialize,
u32: BorshSerialize,
u32: BorshSerialize,
impl BorshSerialize for Decimal where
u32: BorshSerialize,
u32: BorshSerialize,
u32: BorshSerialize,
u32: BorshSerialize,
sourceimpl CheckedAdd for Decimal
impl CheckedAdd for Decimal
sourceimpl CheckedDiv for Decimal
impl CheckedDiv for Decimal
sourceimpl CheckedMul for Decimal
impl CheckedMul for Decimal
sourceimpl CheckedRem for Decimal
impl CheckedRem for Decimal
sourceimpl CheckedSub for Decimal
impl CheckedSub for Decimal
sourceimpl<'de> Deserialize<'de> for Decimal
impl<'de> Deserialize<'de> for Decimal
sourcefn deserialize<D>(deserializer: D) -> Result<Decimal, D::Error> where
D: Deserializer<'de>,
fn deserialize<D>(deserializer: D) -> Result<Decimal, D::Error> where
D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
sourceimpl<'a> DivAssign<&'a Decimal> for Decimal
impl<'a> DivAssign<&'a Decimal> for Decimal
sourcefn div_assign(&mut self, other: &'a Decimal)
fn div_assign(&mut self, other: &'a Decimal)
Performs the /=
operation. Read more
sourceimpl<'a> DivAssign<&'a Decimal> for &'a mut Decimal
impl<'a> DivAssign<&'a Decimal> for &'a mut Decimal
sourcefn div_assign(&mut self, other: &'a Decimal)
fn div_assign(&mut self, other: &'a Decimal)
Performs the /=
operation. Read more
sourceimpl DivAssign<Decimal> for Decimal
impl DivAssign<Decimal> for Decimal
sourcefn div_assign(&mut self, other: Decimal)
fn div_assign(&mut self, other: Decimal)
Performs the /=
operation. Read more
sourceimpl<'a> DivAssign<Decimal> for &'a mut Decimal
impl<'a> DivAssign<Decimal> for &'a mut Decimal
sourcefn div_assign(&mut self, other: Decimal)
fn div_assign(&mut self, other: Decimal)
Performs the /=
operation. Read more
sourceimpl<'v> FromFormField<'v> for Decimal
impl<'v> FromFormField<'v> for Decimal
sourcefn default() -> Option<Self>
fn default() -> Option<Self>
Returns a default value, if any exists, to be used during lenient parsing when the form field is missing. Read more
sourcefn from_value(field: ValueField<'v>) -> Result<'v, Self>
fn from_value(field: ValueField<'v>) -> Result<'v, Self>
Parse a value of T
from a form value field. Read more
sourceimpl FromPrimitive for Decimal
impl FromPrimitive for Decimal
sourcefn from_i32(n: i32) -> Option<Decimal>
fn from_i32(n: i32) -> Option<Decimal>
Converts an i32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_i64(n: i64) -> Option<Decimal>
fn from_i64(n: i64) -> Option<Decimal>
Converts an i64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_i128(n: i128) -> Option<Decimal>
fn from_i128(n: i128) -> Option<Decimal>
Converts an i128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_u32(n: u32) -> Option<Decimal>
fn from_u32(n: u32) -> Option<Decimal>
Converts an u32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_u64(n: u64) -> Option<Decimal>
fn from_u64(n: u64) -> Option<Decimal>
Converts an u64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_u128(n: u128) -> Option<Decimal>
fn from_u128(n: u128) -> Option<Decimal>
Converts an u128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_f32(n: f32) -> Option<Decimal>
fn from_f32(n: f32) -> Option<Decimal>
Converts a f32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_f64(n: f64) -> Option<Decimal>
fn from_f64(n: f64) -> Option<Decimal>
Converts a f64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_isize(n: isize) -> Option<Self>
fn from_isize(n: isize) -> Option<Self>
Converts an isize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_i8(n: i8) -> Option<Self>
fn from_i8(n: i8) -> Option<Self>
Converts an i8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_i16(n: i16) -> Option<Self>
fn from_i16(n: i16) -> Option<Self>
Converts an i16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourcefn from_usize(n: usize) -> Option<Self>
fn from_usize(n: usize) -> Option<Self>
Converts a usize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
sourceimpl<'a> FromSql<'a> for Decimal
impl<'a> FromSql<'a> for Decimal
sourcefn from_sql(
_: &Type,
raw: &[u8]
) -> Result<Decimal, Box<dyn Error + Sync + Send + 'static>>
fn from_sql(
_: &Type,
raw: &[u8]
) -> Result<Decimal, Box<dyn Error + Sync + Send + 'static>>
Creates a new value of this type from a buffer of data of the specified
Postgres Type
in its binary format. Read more
sourcefn accepts(ty: &Type) -> bool
fn accepts(ty: &Type) -> bool
Determines if a value of this type can be created from the specified
Postgres Type
. Read more
sourceimpl<__ST, __DB> FromSqlRow<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
impl<__ST, __DB> FromSqlRow<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
sourcefn build_from_row<R: Row<__DB>>(row: &mut R) -> Result<Self>
fn build_from_row<R: Row<__DB>>(row: &mut R) -> Result<Self>
See the trait documentation.
sourceconst FIELDS_NEEDED: usize
const FIELDS_NEEDED: usize
The number of fields that this type will consume. Must be equal to
the number of times you would call row.take()
in build_from_row
Read more
sourceimpl MathematicalOps for Decimal
impl MathematicalOps for Decimal
sourcefn exp(&self) -> Decimal
fn exp(&self) -> Decimal
The estimated exponential function, ex. Stops calculating when it is within
tolerance of roughly 0.0000002
. Read more
sourcefn checked_exp(&self) -> Option<Decimal>
fn checked_exp(&self) -> Option<Decimal>
The estimated exponential function, ex. Stops calculating when it is within
tolerance of roughly 0.0000002
. Returns None
on overflow. Read more
sourcefn exp_with_tolerance(&self, tolerance: Decimal) -> Decimal
fn exp_with_tolerance(&self, tolerance: Decimal) -> Decimal
The estimated exponential function, ex using the tolerance
provided as a hint
as to when to stop calculating. A larger tolerance will cause the number to stop calculating
sooner at the potential cost of a slightly less accurate result. Read more
sourcefn checked_exp_with_tolerance(&self, tolerance: Decimal) -> Option<Decimal>
fn checked_exp_with_tolerance(&self, tolerance: Decimal) -> Option<Decimal>
The estimated exponential function, ex using the tolerance
provided as a hint
as to when to stop calculating. A larger tolerance will cause the number to stop calculating
sooner at the potential cost of a slightly less accurate result.
Returns None
on overflow. Read more
sourcefn checked_powi(&self, exp: i64) -> Option<Decimal>
fn checked_powi(&self, exp: i64) -> Option<Decimal>
Raise self to the given integer exponent xy returning None
on overflow.
sourcefn checked_powu(&self, exp: u64) -> Option<Decimal>
fn checked_powu(&self, exp: u64) -> Option<Decimal>
Raise self to the given unsigned integer exponent xy returning None
on overflow.
sourcefn checked_powf(&self, exp: f64) -> Option<Decimal>
fn checked_powf(&self, exp: f64) -> Option<Decimal>
Raise self to the given floating point exponent xy returning None
on overflow.
sourcefn powd(&self, exp: Decimal) -> Decimal
fn powd(&self, exp: Decimal) -> Decimal
Raise self to the given Decimal exponent: xy. If exp
is not whole then the approximation
ey*ln(x) is used. Read more
sourcefn checked_powd(&self, exp: Decimal) -> Option<Decimal>
fn checked_powd(&self, exp: Decimal) -> Option<Decimal>
Raise self to the given Decimal exponent xy returning None
on overflow.
If exp
is not whole then the approximation ey*ln(x) is used. Read more
sourcefn sqrt(&self) -> Option<Decimal>
fn sqrt(&self) -> Option<Decimal>
The square root of a Decimal. Uses a standard Babylonian method.
sourcefn ln(&self) -> Decimal
fn ln(&self) -> Decimal
Calculates the natural logarithm for a Decimal calculated using Taylor’s series.
sourcefn checked_ln(&self) -> Option<Decimal>
fn checked_ln(&self) -> Option<Decimal>
Calculates the checked natural logarithm for a Decimal calculated using Taylor’s series.
Returns None
for negative numbers or zero. Read more
sourcefn checked_log10(&self) -> Option<Decimal>
fn checked_log10(&self) -> Option<Decimal>
Calculates the checked base 10 logarithm of a specified Decimal number.
Returns None
for negative numbers or zero. Read more
sourcefn checked_norm_pdf(&self) -> Option<Decimal>
fn checked_norm_pdf(&self) -> Option<Decimal>
The Probability density function for a Normal distribution returning None
on overflow.
sourcefn sin(&self) -> Decimal
fn sin(&self) -> Decimal
Computes the sine of a number (in radians). Panics upon overflow. Read more
sourcefn checked_sin(&self) -> Option<Decimal>
fn checked_sin(&self) -> Option<Decimal>
Computes the checked sine of a number (in radians).
sourcefn cos(&self) -> Decimal
fn cos(&self) -> Decimal
Computes the cosine of a number (in radians). Panics upon overflow. Read more
sourcefn checked_cos(&self) -> Option<Decimal>
fn checked_cos(&self) -> Option<Decimal>
Computes the checked cosine of a number (in radians).
sourcefn tan(&self) -> Decimal
fn tan(&self) -> Decimal
Computes the tangent of a number (in radians). Panics upon overflow or upon approaching a limit. Read more
sourcefn checked_tan(&self) -> Option<Decimal>
fn checked_tan(&self) -> Option<Decimal>
Computes the checked tangent of a number (in radians). Returns None on limit. Read more
sourceimpl<'a> MulAssign<&'a Decimal> for Decimal
impl<'a> MulAssign<&'a Decimal> for Decimal
sourcefn mul_assign(&mut self, other: &'a Decimal)
fn mul_assign(&mut self, other: &'a Decimal)
Performs the *=
operation. Read more
sourceimpl<'a> MulAssign<&'a Decimal> for &'a mut Decimal
impl<'a> MulAssign<&'a Decimal> for &'a mut Decimal
sourcefn mul_assign(&mut self, other: &'a Decimal)
fn mul_assign(&mut self, other: &'a Decimal)
Performs the *=
operation. Read more
sourceimpl MulAssign<Decimal> for Decimal
impl MulAssign<Decimal> for Decimal
sourcefn mul_assign(&mut self, other: Decimal)
fn mul_assign(&mut self, other: Decimal)
Performs the *=
operation. Read more
sourceimpl<'a> MulAssign<Decimal> for &'a mut Decimal
impl<'a> MulAssign<Decimal> for &'a mut Decimal
sourcefn mul_assign(&mut self, other: Decimal)
fn mul_assign(&mut self, other: Decimal)
Performs the *=
operation. Read more
sourceimpl Num for Decimal
impl Num for Decimal
type FromStrRadixErr = Error
sourcefn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr>
fn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr>
Convert from a string and radix (typically 2..=36
). Read more
sourceimpl Ord for Decimal
impl Ord for Decimal
sourceimpl PartialOrd<Decimal> for Decimal
impl PartialOrd<Decimal> for Decimal
sourcefn partial_cmp(&self, other: &Decimal) -> Option<Ordering>
fn partial_cmp(&self, other: &Decimal) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
sourceimpl<__ST, __DB> Queryable<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
impl<__ST, __DB> Queryable<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
sourceimpl<'a> RemAssign<&'a Decimal> for Decimal
impl<'a> RemAssign<&'a Decimal> for Decimal
sourcefn rem_assign(&mut self, other: &'a Decimal)
fn rem_assign(&mut self, other: &'a Decimal)
Performs the %=
operation. Read more
sourceimpl<'a> RemAssign<&'a Decimal> for &'a mut Decimal
impl<'a> RemAssign<&'a Decimal> for &'a mut Decimal
sourcefn rem_assign(&mut self, other: &'a Decimal)
fn rem_assign(&mut self, other: &'a Decimal)
Performs the %=
operation. Read more
sourceimpl RemAssign<Decimal> for Decimal
impl RemAssign<Decimal> for Decimal
sourcefn rem_assign(&mut self, other: Decimal)
fn rem_assign(&mut self, other: Decimal)
Performs the %=
operation. Read more
sourceimpl<'a> RemAssign<Decimal> for &'a mut Decimal
impl<'a> RemAssign<Decimal> for &'a mut Decimal
sourcefn rem_assign(&mut self, other: Decimal)
fn rem_assign(&mut self, other: Decimal)
Performs the %=
operation. Read more
sourceimpl Signed for Decimal
impl Signed for Decimal
sourcefn is_positive(&self) -> bool
fn is_positive(&self) -> bool
Returns true if the number is positive and false if the number is zero or negative.
sourcefn is_negative(&self) -> bool
fn is_negative(&self) -> bool
Returns true if the number is negative and false if the number is zero or positive.
sourceimpl<'a> SubAssign<&'a Decimal> for Decimal
impl<'a> SubAssign<&'a Decimal> for Decimal
sourcefn sub_assign(&mut self, other: &'a Decimal)
fn sub_assign(&mut self, other: &'a Decimal)
Performs the -=
operation. Read more
sourceimpl<'a> SubAssign<&'a Decimal> for &'a mut Decimal
impl<'a> SubAssign<&'a Decimal> for &'a mut Decimal
sourcefn sub_assign(&mut self, other: &'a Decimal)
fn sub_assign(&mut self, other: &'a Decimal)
Performs the -=
operation. Read more
sourceimpl SubAssign<Decimal> for Decimal
impl SubAssign<Decimal> for Decimal
sourcefn sub_assign(&mut self, other: Decimal)
fn sub_assign(&mut self, other: Decimal)
Performs the -=
operation. Read more
sourceimpl<'a> SubAssign<Decimal> for &'a mut Decimal
impl<'a> SubAssign<Decimal> for &'a mut Decimal
sourcefn sub_assign(&mut self, other: Decimal)
fn sub_assign(&mut self, other: Decimal)
Performs the -=
operation. Read more
sourceimpl ToPrimitive for Decimal
impl ToPrimitive for Decimal
sourcefn to_i64(&self) -> Option<i64>
fn to_i64(&self) -> Option<i64>
Converts the value of self
to an i64
. If the value cannot be
represented by an i64
, then None
is returned. Read more
sourcefn to_i128(&self) -> Option<i128>
fn to_i128(&self) -> Option<i128>
Converts the value of self
to an i128
. If the value cannot be
represented by an i128
(i64
under the default implementation), then
None
is returned. Read more
sourcefn to_u64(&self) -> Option<u64>
fn to_u64(&self) -> Option<u64>
Converts the value of self
to a u64
. If the value cannot be
represented by a u64
, then None
is returned. Read more
sourcefn to_u128(&self) -> Option<u128>
fn to_u128(&self) -> Option<u128>
Converts the value of self
to a u128
. If the value cannot be
represented by a u128
(u64
under the default implementation), then
None
is returned. Read more
sourcefn to_f64(&self) -> Option<f64>
fn to_f64(&self) -> Option<f64>
Converts the value of self
to an f64
. Overflows may map to positive
or negative inifinity, otherwise None
is returned if the value cannot
be represented by an f64
. Read more
sourcefn to_isize(&self) -> Option<isize>
fn to_isize(&self) -> Option<isize>
Converts the value of self
to an isize
. If the value cannot be
represented by an isize
, then None
is returned. Read more
sourcefn to_i8(&self) -> Option<i8>
fn to_i8(&self) -> Option<i8>
Converts the value of self
to an i8
. If the value cannot be
represented by an i8
, then None
is returned. Read more
sourcefn to_i16(&self) -> Option<i16>
fn to_i16(&self) -> Option<i16>
Converts the value of self
to an i16
. If the value cannot be
represented by an i16
, then None
is returned. Read more
sourcefn to_i32(&self) -> Option<i32>
fn to_i32(&self) -> Option<i32>
Converts the value of self
to an i32
. If the value cannot be
represented by an i32
, then None
is returned. Read more
sourcefn to_usize(&self) -> Option<usize>
fn to_usize(&self) -> Option<usize>
Converts the value of self
to a usize
. If the value cannot be
represented by a usize
, then None
is returned. Read more
sourcefn to_u8(&self) -> Option<u8>
fn to_u8(&self) -> Option<u8>
Converts the value of self
to a u8
. If the value cannot be
represented by a u8
, then None
is returned. Read more
sourcefn to_u16(&self) -> Option<u16>
fn to_u16(&self) -> Option<u16>
Converts the value of self
to a u16
. If the value cannot be
represented by a u16
, then None
is returned. Read more
sourceimpl ToSql for Decimal
impl ToSql for Decimal
sourcefn to_sql(
&self,
_: &Type,
out: &mut BytesMut
) -> Result<IsNull, Box<dyn Error + Sync + Send + 'static>>
fn to_sql(
&self,
_: &Type,
out: &mut BytesMut
) -> Result<IsNull, Box<dyn Error + Sync + Send + 'static>>
Converts the value of self
into the binary format of the specified
Postgres Type
, appending it to out
. Read more
sourceimpl<__DB> ToSql<Nullable<Numeric>, __DB> for Decimal where
__DB: Backend,
Self: ToSql<Numeric, __DB>,
impl<__DB> ToSql<Nullable<Numeric>, __DB> for Decimal where
__DB: Backend,
Self: ToSql<Numeric, __DB>,
impl Copy for Decimal
impl Eq for Decimal
Auto Trait Implementations
impl RefUnwindSafe for Decimal
impl Send for Decimal
impl Sync for Decimal
impl Unpin for Decimal
impl UnwindSafe for Decimal
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> BorrowToSql for T where
T: ToSql,
impl<T> BorrowToSql for T where
T: ToSql,
sourcepub fn borrow_to_sql(&self) -> &dyn ToSql
pub fn borrow_to_sql(&self) -> &dyn ToSql
Returns a reference to self
as a ToSql
trait object.
sourceimpl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcepub fn equivalent(&self, key: &K) -> bool
pub fn equivalent(&self, key: &K) -> bool
Compare self to key
and return true
if they are equal.
sourceimpl<'v, T> FromForm<'v> for T where
T: FromFormField<'v>,
impl<'v, T> FromForm<'v> for T where
T: FromFormField<'v>,
type Context = FromFieldContext<'v, T>
type Context = FromFieldContext<'v, T>
The form guard’s parsing context.
sourcepub fn init(opts: Options) -> <T as FromForm<'v>>::Context
pub fn init(opts: Options) -> <T as FromForm<'v>>::Context
Initializes and returns the parsing context for Self
.
sourcepub fn push_value(
ctxt: &mut <T as FromForm<'v>>::Context,
field: ValueField<'v>
)
pub fn push_value(
ctxt: &mut <T as FromForm<'v>>::Context,
field: ValueField<'v>
)
Processes the value field field
.
sourcepub fn push_data<'life0, 'life1, 'async_trait>(
ctxt: &'life0 mut FromFieldContext<'v, T>,
field: DataField<'v, 'life1>
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait, Global>> where
'v: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
T: 'async_trait,
pub fn push_data<'life0, 'life1, 'async_trait>(
ctxt: &'life0 mut FromFieldContext<'v, T>,
field: DataField<'v, 'life1>
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait, Global>> where
'v: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait,
T: 'async_trait,
Processes the data field field
.
sourcefn push_error(_ctxt: &mut Self::Context, _error: Error<'r>)
fn push_error(_ctxt: &mut Self::Context, _error: Error<'r>)
Processes the external form or field error _error
. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
impl<T> IntoCollection<T> for T
impl<T> IntoCollection<T> for T
pub fn into_collection<A>(self) -> SmallVec<A> where
A: Array<Item = T>,
pub fn into_collection<A>(self) -> SmallVec<A> where
A: Array<Item = T>,
Converts self
into a collection.
pub fn mapped<U, F, A>(self, f: F) -> SmallVec<A> where
F: FnMut(T) -> U,
A: Array<Item = U>,
sourceimpl<T> IntoSql for T
impl<T> IntoSql for T
sourcefn into_sql<T>(self) -> Self::Expression where
Self: AsExpression<T>,
fn into_sql<T>(self) -> Self::Expression where
Self: AsExpression<T>,
Convert self
to an expression for Diesel’s query builder. Read more
sourcefn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression where
&'a Self: AsExpression<T>,
fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression where
&'a Self: AsExpression<T>,
Convert &self
to an expression for Diesel’s query builder. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
pub fn vzip(self) -> V
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more