Field

Enum Field 

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pub enum Field {
Show 14 variants IStr(String), UStr { original: String, lower: String, }, Char(char), F32(f32), F64(f64), I8(i8), I16(i16), I32(i32), I64(i64), U8(u8), U16(u16), U32(u32), U64(u64), Bool(bool),
}
Expand description

Represents a typed field in a record.

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IStr(String)

Case sensitive string.

"alice" != "Alice"
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UStr

Case insensitive string.

"alice" == "Alice"

Fields

§original: String
§lower: String
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Char(char)

Single character

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F32(f32)

32 bit floating number

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F64(f64)

64 bit floating number

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I8(i8)

8 bit signed integer

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I16(i16)

16 bit signed integer

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I32(i32)

32 bit signed integer

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I64(i64)

64 bit signed integer

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U8(u8)

8 bit unsigned integer

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U16(u16)

16 bit unsigned integer

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U32(u32)

32 bit unsigned integer

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U64(u64)

64 bit unsigned integer

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Bool(bool)

Boolean value

Implementations§

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impl Field

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pub fn escape_str(quote: char, s: &str) -> String

Escape a string according to the specified quotation symbol

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impl Field

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pub fn as_str(&self) -> Option<&str>

Converts istr or ustr to &str

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pub fn as_char(&self) -> Option<char>

Converts char to char

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pub fn as_f32(&self) -> Option<f32>

Converts f32 to f32

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pub fn as_f64(&self) -> Option<f64>

Converts f32 or f64 to f64

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pub fn as_i8(&self) -> Option<i8>

Converts i8 to i8

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pub fn as_i16(&self) -> Option<i16>

Converts i8 or i16 to i16

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pub fn as_i32(&self) -> Option<i32>

Converts i8, i16 or i32 to i32

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pub fn as_i64(&self) -> Option<i64>

Converts i8, i16, i32 or i64 to i64

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pub fn as_u8(&self) -> Option<u8>

Converts u8 to u8

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pub fn as_u16(&self) -> Option<u16>

Converts u8 or u16 to u16

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pub fn as_u32(&self) -> Option<u32>

Converts u8, u16 or u32 to u32

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pub fn as_u64(&self) -> Option<u64>

Converts u8, u16, u32 or u64 to u64

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pub fn as_bool(&self) -> Option<bool>

Converts bool to bool

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impl Field

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pub fn upcast(&self) -> Self

Converts type to the most generic type.

  • f32 -> f64
  • i8, i16, i32 -> i64
  • u8, u16, u32 -> u64
  • ustr -> istr
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pub fn sig(&self) -> Signature

Converts type value to type signature.

Trait Implementations§

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impl Clone for Field

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fn clone(&self) -> Field

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Field

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Display for Field

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Hash for Field

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fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for Field

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for Field

Auto Trait Implementations§

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impl Freeze for Field

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impl RefUnwindSafe for Field

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impl Send for Field

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impl Sync for Field

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impl Unpin for Field

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impl UnwindSafe for Field

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.