Struct oi8

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

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impl oi8

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

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

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

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

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

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pub const fn abs(self) -> oi8

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pub const fn neg(self) -> oi8

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

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

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

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

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

Methods from Deref<Target = Option<i8>>§

1.0.0 · Source

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);
1.0.0 · Source

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);
1.0.0 · Source

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:?}");
1.33.0 · Source

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

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

1.33.0 · Source

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>>.

1.75.0 · Source

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());
}
1.40.0 · Source

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);
1.0.0 · Source

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§

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impl Add<i8> for oi8

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type Output = oi8

The resulting type after applying the + operator.
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fn add(self, rhs: i8) -> oi8

Performs the + operation. Read more
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impl Add<oi8> for i8

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type Output = oi8

The resulting type after applying the + operator.
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fn add(self, rhs: oi8) -> oi8

Performs the + operation. Read more
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impl Add for oi8

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type Output = oi8

The resulting type after applying the + operator.
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fn add(self, rhs: oi8) -> oi8

Performs the + operation. Read more
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impl Clone for oi8

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fn clone(&self) -> oi8

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 oi8

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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 Deref for oi8

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type Target = Option<i8>

The resulting type after dereferencing.
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fn deref(&self) -> &Option<i8>

Dereferences the value.
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impl Div<i8> for oi8

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type Output = oi8

The resulting type after applying the / operator.
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fn div(self, rhs: i8) -> oi8

Performs the / operation. Read more
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impl Div<oi8> for i8

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type Output = oi8

The resulting type after applying the / operator.
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fn div(self, rhs: oi8) -> oi8

Performs the / operation. Read more
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impl Div for oi8

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type Output = oi8

The resulting type after applying the / operator.
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fn div(self, rhs: oi8) -> oi8

Performs the / operation. Read more
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impl From<Option<i8>> for oi8

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

Converts to this type from the input type.
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impl From<i8> for oi8

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fn from(item: i8) -> oi8

Converts to this type from the input type.
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impl From<oi8> for Option<i8>

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

Converts to this type from the input type.
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impl Mul<i8> for oi8

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type Output = oi8

The resulting type after applying the * operator.
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fn mul(self, rhs: i8) -> oi8

Performs the * operation. Read more
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impl Mul<oi8> for i8

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type Output = oi8

The resulting type after applying the * operator.
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fn mul(self, rhs: oi8) -> oi8

Performs the * operation. Read more
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impl Mul for oi8

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type Output = oi8

The resulting type after applying the * operator.
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fn mul(self, rhs: oi8) -> oi8

Performs the * operation. Read more
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impl Rem<i8> for oi8

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type Output = oi8

The resulting type after applying the % operator.
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fn rem(self, rhs: i8) -> oi8

Performs the % operation. Read more
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impl Rem<oi8> for i8

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type Output = oi8

The resulting type after applying the % operator.
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fn rem(self, rhs: oi8) -> oi8

Performs the % operation. Read more
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impl Rem for oi8

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type Output = oi8

The resulting type after applying the % operator.
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fn rem(self, rhs: oi8) -> oi8

Performs the % operation. Read more
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impl Shl<i8> for oi8

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type Output = oi8

The resulting type after applying the << operator.
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fn shl(self, rhs: i8) -> oi8

Performs the << operation. Read more
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impl Shl<oi8> for i8

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type Output = oi8

The resulting type after applying the << operator.
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fn shl(self, rhs: oi8) -> oi8

Performs the << operation. Read more
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impl Shl for oi8

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type Output = oi8

The resulting type after applying the << operator.
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fn shl(self, rhs: oi8) -> oi8

Performs the << operation. Read more
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impl Shr<i8> for oi8

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type Output = oi8

The resulting type after applying the >> operator.
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fn shr(self, rhs: i8) -> oi8

Performs the >> operation. Read more
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impl Shr<oi8> for i8

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type Output = oi8

The resulting type after applying the >> operator.
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fn shr(self, rhs: oi8) -> oi8

Performs the >> operation. Read more
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impl Shr for oi8

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type Output = oi8

The resulting type after applying the >> operator.
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fn shr(self, rhs: oi8) -> oi8

Performs the >> operation. Read more
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impl Sub<i8> for oi8

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type Output = oi8

The resulting type after applying the - operator.
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fn sub(self, rhs: i8) -> oi8

Performs the - operation. Read more
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impl Sub<oi8> for i8

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type Output = oi8

The resulting type after applying the - operator.
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fn sub(self, rhs: oi8) -> oi8

Performs the - operation. Read more
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impl Sub for oi8

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type Output = oi8

The resulting type after applying the - operator.
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fn sub(self, rhs: oi8) -> oi8

Performs the - operation. Read more
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impl Copy for oi8

Auto Trait Implementations§

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impl Freeze for oi8

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impl RefUnwindSafe for oi8

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impl Send for oi8

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impl Sync for oi8

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impl Unpin for oi8

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impl UnwindSafe for oi8

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<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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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.