Function wasmtime_environ::__core::char::from_u32_unchecked
1.5.0 (const: unstable) · source · [−]Expand description
Converts a u32
to a char
, ignoring validity.
Note that all char
s are valid u32
s, and can be cast to one with
as
:
let c = '💯';
let i = c as u32;
assert_eq!(128175, i);
However, the reverse is not true: not all valid u32
s are valid
char
s. from_u32_unchecked()
will ignore this, and blindly cast to
char
, possibly creating an invalid one.
Safety
This function is unsafe, as it may construct invalid char
values.
For a safe version of this function, see the from_u32
function.
Examples
Basic usage:
use std::char;
let c = unsafe { char::from_u32_unchecked(0x2764) };
assert_eq!('❤', c);