Struct oi8

pub struct oi8(/* private fields */);

Implementations

impl oi8

pub const fn checked_add(self, rhs: oi8) -> oi8

Checked integer addition. Computes self + rhs, returning None if overflow occurred.

Examples

Basic usage:

assert!(oint::structural_eq!(oint::oi8::from(i8::MAX - 2).checked_add(1.into()), oint::oi8::from(i8::MAX - 1)));
assert!(oint::structural_eq!(oint::oi8::from(i8::MAX - 2).checked_add(3.into()), oint::oi8::from(None)));

pub const fn checked_sub(self, rhs: oi8) -> oi8

Checked integer subtraction. Computes self - rhs, returning None if overflow occurred.

Examples

Basic usage:

assert!(oint::structural_eq!(oint::oi8::from(i8::MIN + 2).checked_sub(1.into()), oint::oi8::from(i8::MIN + 1)));
assert!(oint::structural_eq!(oint::oi8::from(i8::MIN + 2).checked_sub(3.into()), oint::oi8::from(None)));

pub const fn checked_mul(self, rhs: oi8) -> oi8

Checked integer multiplication. Computes self * rhs, returning None if overflow occurred.

Examples

Basic usage:

assert!(oint::structural_eq!(oint::oi8::from(i8::MAX).checked_mul(1.into()), oint::oi8::from(Some(i8::MAX))));
assert!(oint::structural_eq!(oint::oi8::from(i8::MAX).checked_mul(2.into()), oint::oi8::from(None)));

pub const fn checked_div(self, rhs: oi8) -> oi8

Checked integer division. Computes self / rhs, returning None if rhs == 0 or the division results in overflow.

Examples

Basic usage:

assert!(oint::structural_eq!(oint::oi8::from(i8::MIN + 1).checked_div((-1).into()), oint::oi8::from(i8::MAX)));
assert!(oint::structural_eq!(oint::oi8::from(i8::MIN).checked_div((-1).into()), oint::oi8::from(None)));
assert!(oint::structural_eq!(oint::oi8::from(1i8).checked_div(0.into()), oint::oi8::from(None)));

pub const fn checked_rem(self, rhs: oi8) -> oi8

pub const fn checked_shl(self, rhs: ou32) -> oi8

pub const fn checked_shr(self, rhs: ou32) -> oi8

pub const fn max(self, rhs: oi8) -> oi8

pub const fn min(self, rhs: oi8) -> oi8

pub const fn abs(self) -> oi8

pub const fn neg(self) -> oi8

pub const fn div_euclid(self, rhs: oi8) -> oi8

pub const fn structural_eq(self, rhs: oi8) -> bool

pub const fn structural_ne(self, rhs: oi8) -> bool

pub const fn indeterminate_eq(self, rhs: oi8) -> bool

pub const fn indeterminate_ne(self, rhs: oi8) -> bool

Methods from Deref<Target = Option<i8>>

pub fn is_some(&self) -> bool

Returns true if the option is a Some value.

Examples

let x: Option<u32> = Some(2);
assert_eq!(x.is_some(), true);

let x: Option<u32> = None;
assert_eq!(x.is_some(), false);

pub fn is_none(&self) -> bool

Returns true if the option is a None value.

Examples

let x: Option<u32> = Some(2);
assert_eq!(x.is_none(), false);

let x: Option<u32> = None;
assert_eq!(x.is_none(), true);

pub fn as_ref(&self) -> Option<&T>

Converts from &Option<T> to Option<&T>.

Examples

Calculates the length of an Option<String> as an Option<usize> without moving the String. The map method takes the self argument by value, consuming the original, so this technique uses as_ref to first take an Option to a reference to the value inside the original.

let text: Option<String> = Some("Hello, world!".to_string());
// First, cast `Option<String>` to `Option<&String>` with `as_ref`,
// then consume *that* with `map`, leaving `text` on the stack.
let text_length: Option<usize> = text.as_ref().map(|s| s.len());
println!("still can print text: {text:?}");

pub fn as_pin_ref(self: Pin<&Option<T>>) -> Option<Pin<&T>>

Converts from Pin<&Option<T>> to Option<Pin<&T>>.

pub fn as_pin_mut(self: Pin<&mut Option<T>>) -> Option<Pin<&mut T>>

Converts from Pin<&mut Option<T>> to Option<Pin<&mut T>>.

pub fn as_slice(&self) -> &[T]

Returns a slice of the contained value, if any. If this is None, an empty slice is returned. This can be useful to have a single type of iterator over an Option or slice.

Note: Should you have an Option<&T> and wish to get a slice of T, you can unpack it via opt.map_or(&[], std::slice::from_ref).

Examples

assert_eq!(
    [Some(1234).as_slice(), None.as_slice()],
    [&[1234][..], &[][..]],
);

The inverse of this function is (discounting borrowing) [_]::first:

for i in [Some(1234_u16), None] {
    assert_eq!(i.as_ref(), i.as_slice().first());
}

pub fn as_deref(&self) -> Option<&<T as Deref>::Target>

where T: Deref,

Converts from Option<T> (or &Option<T>) to Option<&T::Target>.

Leaves the original Option in-place, creating a new one with a reference to the original one, additionally coercing the contents via Deref.

Examples

let x: Option<String> = Some("hey".to_owned());
assert_eq!(x.as_deref(), Some("hey"));

let x: Option<String> = None;
assert_eq!(x.as_deref(), None);

pub fn iter(&self) -> Iter<'_, T>

Returns an iterator over the possibly contained value.

Examples

let x = Some(4);
assert_eq!(x.iter().next(), Some(&4));

let x: Option<u32> = None;
assert_eq!(x.iter().next(), None);

Trait Implementations

impl Add<i8> for oi8

type Output = oi8

The resulting type after applying the + operator.

fn add(self, rhs: i8) -> oi8

Performs the + operation.

impl Add<oi8> for i8

type Output = oi8

The resulting type after applying the + operator.

fn add(self, rhs: oi8) -> oi8

Performs the + operation.

impl Add for oi8

type Output = oi8

The resulting type after applying the + operator.

fn add(self, rhs: oi8) -> oi8

Performs the + operation.

impl Clone for oi8

fn clone(&self) -> oi8

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for oi8

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

Formats the value using the given formatter.

impl Deref for oi8

type Target = Option<i8>

The resulting type after dereferencing.

fn deref(&self) -> &Option<i8>

Dereferences the value.

impl Div<i8> for oi8

type Output = oi8

The resulting type after applying the / operator.

fn div(self, rhs: i8) -> oi8

Performs the / operation.

impl Div<oi8> for i8

type Output = oi8

The resulting type after applying the / operator.

fn div(self, rhs: oi8) -> oi8

Performs the / operation.

impl Div for oi8

type Output = oi8

The resulting type after applying the / operator.

fn div(self, rhs: oi8) -> oi8

Performs the / operation.

impl From<Option<i8>> for oi8

fn from(item: Option<i8>) -> oi8

Converts to this type from the input type.

impl From<i8> for oi8

fn from(item: i8) -> oi8

Converts to this type from the input type.

impl From<oi8> for Option<i8>

fn from(item: oi8) -> Option<i8>

Converts to this type from the input type.

impl Mul<i8> for oi8

type Output = oi8

The resulting type after applying the * operator.

fn mul(self, rhs: i8) -> oi8

Performs the * operation.

impl Mul<oi8> for i8

type Output = oi8

The resulting type after applying the * operator.

fn mul(self, rhs: oi8) -> oi8

Performs the * operation.

impl Mul for oi8

type Output = oi8

The resulting type after applying the * operator.

fn mul(self, rhs: oi8) -> oi8

Performs the * operation.

impl Rem<i8> for oi8

type Output = oi8

The resulting type after applying the % operator.

fn rem(self, rhs: i8) -> oi8

Performs the % operation.

impl Rem<oi8> for i8

type Output = oi8

The resulting type after applying the % operator.

fn rem(self, rhs: oi8) -> oi8

Performs the % operation.

impl Rem for oi8

type Output = oi8

The resulting type after applying the % operator.

fn rem(self, rhs: oi8) -> oi8

Performs the % operation.

impl Shl<i8> for oi8

type Output = oi8

The resulting type after applying the << operator.

fn shl(self, rhs: i8) -> oi8

Performs the << operation.

impl Shl<oi8> for i8

type Output = oi8

The resulting type after applying the << operator.

fn shl(self, rhs: oi8) -> oi8

Performs the << operation.

impl Shl for oi8

type Output = oi8

The resulting type after applying the << operator.

fn shl(self, rhs: oi8) -> oi8

Performs the << operation.

impl Shr<i8> for oi8

type Output = oi8

The resulting type after applying the >> operator.

fn shr(self, rhs: i8) -> oi8

Performs the >> operation.

impl Shr<oi8> for i8

type Output = oi8

The resulting type after applying the >> operator.

fn shr(self, rhs: oi8) -> oi8

Performs the >> operation.

impl Shr for oi8

type Output = oi8

The resulting type after applying the >> operator.

fn shr(self, rhs: oi8) -> oi8

Performs the >> operation.

impl Sub<i8> for oi8

type Output = oi8

The resulting type after applying the - operator.

fn sub(self, rhs: i8) -> oi8

Performs the - operation.

impl Sub<oi8> for i8

type Output = oi8

The resulting type after applying the - operator.

fn sub(self, rhs: oi8) -> oi8

Performs the - operation.

impl Sub for oi8

type Output = oi8

The resulting type after applying the - operator.

fn sub(self, rhs: oi8) -> oi8

Performs the - operation.

impl Copy for oi8