std::ptr::write_bytes - Rust
Description: API documentation for the Rust `write_bytes` fn in crate `std`.
Keywords: rust, rustlang, rust-lang, write_bytes

# Function std::ptr::write_bytes 1.0.0 [−] [src]

    pub unsafe extern "rust-intrinsic" fn write_bytes<T>(dst: *mut T,
                                                         val: u8,
                                                         count: usize)

Invokes memset on the specified pointer, setting `count * size_of::<T>()` bytes of memory starting at `dst` to `val`.

# Examples

    use std::ptr;

    let mut vec = vec![0; 4];
    unsafe {
        let vec_ptr = vec.as_mut_ptr();
        ptr::write_bytes(vec_ptr, b'a', 2);
    }
    assert_eq!(vec, [b'a', b'a', 0, 0]);Run

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