#[repr(transparent)]
pub struct NonZeroUsize(_);
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<std::num::NonZeroUsize>>(), size_of::<usize>());Run
Create a non-zero without checking the value.
The value must not be zero.
Create a non-zero if the given value is not zero.
Returns the value as a primitive type.
Formats the value using the given formatter. Read more
Formats the value using the given formatter.
Formats the value using the given formatter.
Performs copy-assignment from source
. Read more
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self | 1.21.0 [src] |
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self | 1.21.0 [src] |
Compares and returns the minimum of two values. Read more
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
Formats the value using the given formatter.
Formats the value using the given formatter. Read more
Feeds this value into the given [Hasher
]. Read more
Feeds a slice of this type into the given [Hasher
]. Read more
Formats the value using the given formatter.
🔬 This is a nightly-only experimental API. (
try_from
#33417)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (
try_from
#33417)
🔬 This is a nightly-only experimental API. (
try_from
#33417)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (
try_from
#33417)
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
#27745)
this method will likely be replaced by an associated static
type Owned = T
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
#41263)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
Converts the given value to a String
. Read more