# Function std::str::from_utf8_unchecked_mut

1.20.0 (const: unstable) · source ·

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

Expand description

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

See the immutable version, `from_utf8_unchecked()` for more information.

## 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);

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