Function from_utf8_unchecked_mut 

pub const unsafe fn from_utf8_unchecked_mut(v: &mut [u8]) -> &mut str

This item is validated for IEC 61508 (SIL 2) and ISO 26262 (ASIL B).

Converts a slice of bytes to a string slice without checking that the string contains valid UTF-8; mutable version.

This is an alias to str::from_utf8_unchecked_mut.

See the immutable version, from_utf8_unchecked() for documentation and safety requirements.

Examples

Basic usage:

use std::str;

let mut heart = vec![240, 159, 146, 150];
let heart = unsafe { str::from_utf8_unchecked_mut(&mut heart) };

assert_eq!("💖", heart);