Struct std::num::NonZeroUsize
1.28.0 · source · [−]#[repr(transparent)]pub struct NonZeroUsize(_);
Expand description
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroUsize>
is the same size as usize
:
use std::mem::size_of;
assert_eq!(size_of::<Option<core::num::NonZeroUsize>>(), size_of::<usize>());
RunImplementations
sourceimpl NonZeroUsize
impl NonZeroUsize
const: 1.28.0 · sourcepub const unsafe fn new_unchecked(n: usize) -> NonZeroUsize
pub const unsafe fn new_unchecked(n: usize) -> NonZeroUsize
Creates a non-zero without checking whether the value is non-zero. This results in undefined behaviour if the value is zero.
Safety
The value must not be zero.
const: 1.47.0 · sourcepub const fn new(n: usize) -> Option<NonZeroUsize>
pub const fn new(n: usize) -> Option<NonZeroUsize>
Creates a non-zero if the given value is not zero.
sourceimpl NonZeroUsize
impl NonZeroUsize
1.53.0 (const: 1.53.0) · sourcepub const fn leading_zeros(self) -> u32
pub const fn leading_zeros(self) -> u32
Returns the number of leading zeros in the binary representation of self
.
On many architectures, this function can perform better than leading_zeros()
on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroUsize::new(usize::MAX).unwrap();
assert_eq!(n.leading_zeros(), 0);
Run1.53.0 (const: 1.53.0) · sourcepub const fn trailing_zeros(self) -> u32
pub const fn trailing_zeros(self) -> u32
Returns the number of trailing zeros in the binary representation
of self
.
On many architectures, this function can perform better than trailing_zeros()
on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroUsize::new(0b0101000).unwrap();
assert_eq!(n.trailing_zeros(), 3);
Runsourceimpl NonZeroUsize
impl NonZeroUsize
sourcepub const fn checked_add(self, other: usize) -> Option<NonZeroUsize>
pub const fn checked_add(self, other: usize) -> Option<NonZeroUsize>
Add an unsigned integer to a non-zero value.
Check for overflow and return None
on overflow
As a consequence, the result cannot wrap to zero.
Examples
#![feature(nonzero_ops)]
let one = NonZeroUsize::new(1)?;
let two = NonZeroUsize::new(2)?;
let max = NonZeroUsize::new(usize::MAX)?;
assert_eq!(Some(two), one.checked_add(1));
assert_eq!(None, max.checked_add(1));
Runsourcepub const fn saturating_add(self, other: usize) -> NonZeroUsize
pub const fn saturating_add(self, other: usize) -> NonZeroUsize
Add an unsigned integer to a non-zero value.
Return usize::MAX
on overflow.
Examples
#![feature(nonzero_ops)]
let one = NonZeroUsize::new(1)?;
let two = NonZeroUsize::new(2)?;
let max = NonZeroUsize::new(usize::MAX)?;
assert_eq!(two, one.saturating_add(1));
assert_eq!(max, max.saturating_add(1));
Runsourcepub const unsafe fn unchecked_add(self, other: usize) -> NonZeroUsize
pub const unsafe fn unchecked_add(self, other: usize) -> NonZeroUsize
Add an unsigned integer to a non-zero value,
assuming overflow cannot occur.
Overflow is unchecked, and it is undefined behaviour to overflow
even if the result would wrap to a non-zero value.
The behaviour is undefined as soon as
self + rhs > usize::MAX
.
Examples
#![feature(nonzero_ops)]
let one = NonZeroUsize::new(1)?;
let two = NonZeroUsize::new(2)?;
assert_eq!(two, unsafe { one.unchecked_add(1) });
Runsourcepub const fn checked_next_power_of_two(self) -> Option<NonZeroUsize>
pub const fn checked_next_power_of_two(self) -> Option<NonZeroUsize>
Returns the smallest power of two greater than or equal to n.
Check for overflow and return None
if the next power of two is greater than the type’s maximum value.
As a consequence, the result cannot wrap to zero.
Examples
#![feature(nonzero_ops)]
let two = NonZeroUsize::new(2)?;
let three = NonZeroUsize::new(3)?;
let four = NonZeroUsize::new(4)?;
let max = NonZeroUsize::new(usize::MAX)?;
assert_eq!(Some(two), two.checked_next_power_of_two() );
assert_eq!(Some(four), three.checked_next_power_of_two() );
assert_eq!(None, max.checked_next_power_of_two() );
Runsourcepub const fn log2(self) -> u32
pub const fn log2(self) -> u32
Returns the base 2 logarithm of the number, rounded down.
This is the same operation as
usize::log2
,
except that it has no failure cases to worry about
since this value can never be zero.
Examples
#![feature(int_log)]
assert_eq!(NonZeroUsize::new(7).unwrap().log2(), 2);
assert_eq!(NonZeroUsize::new(8).unwrap().log2(), 3);
assert_eq!(NonZeroUsize::new(9).unwrap().log2(), 3);
Runsourcepub const fn log10(self) -> u32
pub const fn log10(self) -> u32
Returns the base 10 logarithm of the number, rounded down.
This is the same operation as
usize::log10
,
except that it has no failure cases to worry about
since this value can never be zero.
Examples
#![feature(int_log)]
assert_eq!(NonZeroUsize::new(99).unwrap().log10(), 1);
assert_eq!(NonZeroUsize::new(100).unwrap().log10(), 2);
assert_eq!(NonZeroUsize::new(101).unwrap().log10(), 2);
Runsourceimpl NonZeroUsize
impl NonZeroUsize
sourcepub const fn checked_mul(self, other: NonZeroUsize) -> Option<NonZeroUsize>
pub const fn checked_mul(self, other: NonZeroUsize) -> Option<NonZeroUsize>
Multiply two non-zero integers together.
Check for overflow and return None
on overflow.
As a consequence, the result cannot wrap to zero.
Examples
#![feature(nonzero_ops)]
let two = NonZeroUsize::new(2)?;
let four = NonZeroUsize::new(4)?;
let max = NonZeroUsize::new(usize::MAX)?;
assert_eq!(Some(four), two.checked_mul(two));
assert_eq!(None, max.checked_mul(two));
Runsourcepub const fn saturating_mul(self, other: NonZeroUsize) -> NonZeroUsize
pub const fn saturating_mul(self, other: NonZeroUsize) -> NonZeroUsize
Multiply two non-zero integers together.
Return usize::MAX
on overflow.
Examples
#![feature(nonzero_ops)]
let two = NonZeroUsize::new(2)?;
let four = NonZeroUsize::new(4)?;
let max = NonZeroUsize::new(usize::MAX)?;
assert_eq!(four, two.saturating_mul(two));
assert_eq!(max, four.saturating_mul(max));
Runsourcepub const unsafe fn unchecked_mul(self, other: NonZeroUsize) -> NonZeroUsize
pub const unsafe fn unchecked_mul(self, other: NonZeroUsize) -> NonZeroUsize
Multiply two non-zero integers together,
assuming overflow cannot occur.
Overflow is unchecked, and it is undefined behaviour to overflow
even if the result would wrap to a non-zero value.
The behaviour is undefined as soon as
self * rhs > usize::MAX
.
Examples
#![feature(nonzero_ops)]
let two = NonZeroUsize::new(2)?;
let four = NonZeroUsize::new(4)?;
assert_eq!(four, unsafe { two.unchecked_mul(two) });
Runsourcepub const fn checked_pow(self, other: u32) -> Option<NonZeroUsize>
pub const fn checked_pow(self, other: u32) -> Option<NonZeroUsize>
Raise non-zero value to an integer power.
Check for overflow and return None
on overflow.
As a consequence, the result cannot wrap to zero.
Examples
#![feature(nonzero_ops)]
let three = NonZeroUsize::new(3)?;
let twenty_seven = NonZeroUsize::new(27)?;
let half_max = NonZeroUsize::new(usize::MAX / 2)?;
assert_eq!(Some(twenty_seven), three.checked_pow(3));
assert_eq!(None, half_max.checked_pow(3));
Runsourcepub const fn saturating_pow(self, other: u32) -> NonZeroUsize
pub const fn saturating_pow(self, other: u32) -> NonZeroUsize
Raise non-zero value to an integer power.
Return usize::MAX
on overflow.
Examples
#![feature(nonzero_ops)]
let three = NonZeroUsize::new(3)?;
let twenty_seven = NonZeroUsize::new(27)?;
let max = NonZeroUsize::new(usize::MAX)?;
assert_eq!(twenty_seven, three.saturating_pow(3));
assert_eq!(max, max.saturating_pow(3));
Runsourceimpl NonZeroUsize
impl NonZeroUsize
1.59.0 (const: 1.59.0) · sourcepub const fn is_power_of_two(self) -> bool
pub const fn is_power_of_two(self) -> bool
Returns true
if and only if self == (1 << k)
for some k
.
On many architectures, this function can perform better than is_power_of_two()
on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let eight = std::num::NonZeroUsize::new(8).unwrap();
assert!(eight.is_power_of_two());
let ten = std::num::NonZeroUsize::new(10).unwrap();
assert!(!ten.is_power_of_two());
Runsourceimpl NonZeroUsize
impl NonZeroUsize
sourcepub const MIN: NonZeroUsize = Self::new(1).unwrap()
pub const MIN: NonZeroUsize = Self::new(1).unwrap()
sourcepub const MAX: NonZeroUsize = Self::new(usize::MAX).unwrap()
pub const MAX: NonZeroUsize = Self::new(usize::MAX).unwrap()
The largest value that can be represented by this non-zero
integer type,
equal to usize::MAX
.
Examples
#![feature(nonzero_min_max)]
assert_eq!(NonZeroUsize::MAX.get(), usize::MAX);
Runsourceimpl NonZeroUsize
impl NonZeroUsize
Trait Implementations
sourceimpl Binary for NonZeroUsize
impl Binary for NonZeroUsize
1.45.0 (const: unstable) · sourceimpl BitOr<NonZeroUsize> for NonZeroUsize
impl BitOr<NonZeroUsize> for NonZeroUsize
type Output = NonZeroUsize
type Output = NonZeroUsize
The resulting type after applying the |
operator.
const: unstable · sourcefn bitor(
self,
rhs: NonZeroUsize
) -> <NonZeroUsize as BitOr<NonZeroUsize>>::Output
fn bitor(
self,
rhs: NonZeroUsize
) -> <NonZeroUsize as BitOr<NonZeroUsize>>::Output
Performs the |
operation. Read more
1.45.0 (const: unstable) · sourceimpl BitOr<NonZeroUsize> for usize
impl BitOr<NonZeroUsize> for usize
type Output = NonZeroUsize
type Output = NonZeroUsize
The resulting type after applying the |
operator.
const: unstable · sourcefn bitor(self, rhs: NonZeroUsize) -> <usize as BitOr<NonZeroUsize>>::Output
fn bitor(self, rhs: NonZeroUsize) -> <usize as BitOr<NonZeroUsize>>::Output
Performs the |
operation. Read more
1.45.0 (const: unstable) · sourceimpl BitOr<usize> for NonZeroUsize
impl BitOr<usize> for NonZeroUsize
1.45.0 (const: unstable) · sourceimpl BitOrAssign<NonZeroUsize> for NonZeroUsize
impl BitOrAssign<NonZeroUsize> for NonZeroUsize
const: unstable · sourcefn bitor_assign(&mut self, rhs: NonZeroUsize)
fn bitor_assign(&mut self, rhs: NonZeroUsize)
Performs the |=
operation. Read more
1.45.0 (const: unstable) · sourceimpl BitOrAssign<usize> for NonZeroUsize
impl BitOrAssign<usize> for NonZeroUsize
const: unstable · sourcefn bitor_assign(&mut self, rhs: usize)
fn bitor_assign(&mut self, rhs: usize)
Performs the |=
operation. Read more
sourceimpl Clone for NonZeroUsize
impl Clone for NonZeroUsize
sourcefn clone(&self) -> NonZeroUsize
fn clone(&self) -> NonZeroUsize
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for NonZeroUsize
impl Debug for NonZeroUsize
sourceimpl Display for NonZeroUsize
impl Display for NonZeroUsize
1.51.0 (const: unstable) · sourceimpl Div<NonZeroUsize> for usize
impl Div<NonZeroUsize> for usize
1.41.0 (const: unstable) · sourceimpl From<NonZeroU16> for NonZeroUsize
impl From<NonZeroU16> for NonZeroUsize
const: unstable · sourcefn from(small: NonZeroU16) -> NonZeroUsize
fn from(small: NonZeroU16) -> NonZeroUsize
Converts NonZeroU16
to NonZeroUsize
losslessly.
1.41.0 (const: unstable) · sourceimpl From<NonZeroU8> for NonZeroUsize
impl From<NonZeroU8> for NonZeroUsize
const: unstable · sourcefn from(small: NonZeroU8) -> NonZeroUsize
fn from(small: NonZeroU8) -> NonZeroUsize
Converts NonZeroU8
to NonZeroUsize
losslessly.
1.31.0 (const: unstable) · sourceimpl From<NonZeroUsize> for usize
impl From<NonZeroUsize> for usize
const: unstable · sourcefn from(nonzero: NonZeroUsize) -> usize
fn from(nonzero: NonZeroUsize) -> usize
Converts a NonZeroUsize
into an usize
1.35.0 · sourceimpl FromStr for NonZeroUsize
impl FromStr for NonZeroUsize
type Err = ParseIntError
type Err = ParseIntError
The associated error which can be returned from parsing.
sourcefn from_str(src: &str) -> Result<NonZeroUsize, <NonZeroUsize as FromStr>::Err>
fn from_str(src: &str) -> Result<NonZeroUsize, <NonZeroUsize as FromStr>::Err>
Parses a string s
to return a value of this type. Read more
sourceimpl Hash for NonZeroUsize
impl Hash for NonZeroUsize
sourceimpl LowerHex for NonZeroUsize
impl LowerHex for NonZeroUsize
sourceimpl Octal for NonZeroUsize
impl Octal for NonZeroUsize
sourceimpl Ord for NonZeroUsize
impl Ord for NonZeroUsize
sourceimpl PartialEq<NonZeroUsize> for NonZeroUsize
impl PartialEq<NonZeroUsize> for NonZeroUsize
sourcefn eq(&self, other: &NonZeroUsize) -> bool
fn eq(&self, other: &NonZeroUsize) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &NonZeroUsize) -> bool
fn ne(&self, other: &NonZeroUsize) -> bool
This method tests for !=
.
sourceimpl PartialOrd<NonZeroUsize> for NonZeroUsize
impl PartialOrd<NonZeroUsize> for NonZeroUsize
sourcefn partial_cmp(&self, other: &NonZeroUsize) -> Option<Ordering>
fn partial_cmp(&self, other: &NonZeroUsize) -> 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
1.51.0 (const: unstable) · sourceimpl Rem<NonZeroUsize> for usize
impl Rem<NonZeroUsize> for usize
1.49.0 · sourceimpl TryFrom<NonZeroI128> for NonZeroUsize
impl TryFrom<NonZeroI128> for NonZeroUsize
sourcefn try_from(
value: NonZeroI128
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI128>>::Error>
fn try_from(
value: NonZeroI128
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI128>>::Error>
Attempts to convert NonZeroI128
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroI16> for NonZeroUsize
impl TryFrom<NonZeroI16> for NonZeroUsize
sourcefn try_from(
value: NonZeroI16
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI16>>::Error>
fn try_from(
value: NonZeroI16
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI16>>::Error>
Attempts to convert NonZeroI16
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroI32> for NonZeroUsize
impl TryFrom<NonZeroI32> for NonZeroUsize
sourcefn try_from(
value: NonZeroI32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI32>>::Error>
fn try_from(
value: NonZeroI32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroI64> for NonZeroUsize
impl TryFrom<NonZeroI64> for NonZeroUsize
sourcefn try_from(
value: NonZeroI64
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI64>>::Error>
fn try_from(
value: NonZeroI64
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI64>>::Error>
Attempts to convert NonZeroI64
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroI8> for NonZeroUsize
impl TryFrom<NonZeroI8> for NonZeroUsize
sourcefn try_from(
value: NonZeroI8
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI8>>::Error>
fn try_from(
value: NonZeroI8
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI8>>::Error>
Attempts to convert NonZeroI8
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroIsize> for NonZeroUsize
impl TryFrom<NonZeroIsize> for NonZeroUsize
sourcefn try_from(
value: NonZeroIsize
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroIsize>>::Error>
fn try_from(
value: NonZeroIsize
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroU128> for NonZeroUsize
impl TryFrom<NonZeroU128> for NonZeroUsize
sourcefn try_from(
value: NonZeroU128
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU128>>::Error>
fn try_from(
value: NonZeroU128
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU128>>::Error>
Attempts to convert NonZeroU128
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroU32> for NonZeroUsize
impl TryFrom<NonZeroU32> for NonZeroUsize
sourcefn try_from(
value: NonZeroU32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU32>>::Error>
fn try_from(
value: NonZeroU32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroU64> for NonZeroUsize
impl TryFrom<NonZeroU64> for NonZeroUsize
sourcefn try_from(
value: NonZeroU64
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU64>>::Error>
fn try_from(
value: NonZeroU64
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU64>>::Error>
Attempts to convert NonZeroU64
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroU16
impl TryFrom<NonZeroUsize> for NonZeroU16
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroU16
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroI16
impl TryFrom<NonZeroUsize> for NonZeroI16
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroI16
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroU128
impl TryFrom<NonZeroUsize> for NonZeroU128
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroU128
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroI128
impl TryFrom<NonZeroUsize> for NonZeroI128
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroI128, <NonZeroI128 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroI128, <NonZeroI128 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroI128
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroU8
impl TryFrom<NonZeroUsize> for NonZeroU8
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroU8
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroU64
impl TryFrom<NonZeroUsize> for NonZeroU64
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroU64
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroIsize
impl TryFrom<NonZeroUsize> for NonZeroIsize
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroIsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroU32
impl TryFrom<NonZeroUsize> for NonZeroU32
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroU32
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroI32
impl TryFrom<NonZeroUsize> for NonZeroI32
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroI32
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroI8
impl TryFrom<NonZeroUsize> for NonZeroI8
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroI8
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.49.0 · sourceimpl TryFrom<NonZeroUsize> for NonZeroI64
impl TryFrom<NonZeroUsize> for NonZeroI64
sourcefn try_from(
value: NonZeroUsize
) -> Result<NonZeroI64, <NonZeroI64 as TryFrom<NonZeroUsize>>::Error>
fn try_from(
value: NonZeroUsize
) -> Result<NonZeroI64, <NonZeroI64 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize
to NonZeroI64
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
1.46.0 · sourceimpl TryFrom<usize> for NonZeroUsize
impl TryFrom<usize> for NonZeroUsize
sourcefn try_from(
value: usize
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<usize>>::Error>
fn try_from(
value: usize
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<usize>>::Error>
Attempts to convert usize
to NonZeroUsize
.
type Error = TryFromIntError
type Error = TryFromIntError
The type returned in the event of a conversion error.
sourceimpl UpperHex for NonZeroUsize
impl UpperHex for NonZeroUsize
impl Copy for NonZeroUsize
impl Eq for NonZeroUsize
impl StructuralEq for NonZeroUsize
impl StructuralPartialEq for NonZeroUsize
Auto Trait Implementations
impl RefUnwindSafe for NonZeroUsize
impl Send for NonZeroUsize
impl Sync for NonZeroUsize
impl Unpin for NonZeroUsize
impl UnwindSafe for NonZeroUsize
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. 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.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more