# Function std::str::from_utf8_unchecked 1.0.0 [−] [src]

    pub unsafe fn from_utf8_unchecked(v: &[u8]) -> &str

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

See the safe version, `from_utf8()`, for more information.

# Safety

This function is unsafe because it does not check that the bytes passed to it are valid UTF-8. If this constraint is violated, undefined behavior results, as the rest of Rust assumes that `&str`s are valid UTF-8.

# Examples

Basic usage:

    use std::str;

    // some bytes, in a vector
    let sparkle_heart = vec![240, 159, 146, 150];

    let sparkle_heart = unsafe {
        str::from_utf8_unchecked(&sparkle_heart)
    };

    assert_eq!("💖", sparkle_heart);Run

# Help

## Keyboard Shortcuts

?
  Show this help dialog
S
  Focus the search field
⇤
  Move up in search results
⇥
  Move down in search results
⏎
  Go to active search result
+
  Collapse/expand all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)