Module vec::unsafe

Type vec_repr

type vec_repr = {box_header: (uint, uint, uint, uint),
 mut fill: uint,
 mut alloc: uint,
 data: u8,}

The internal representation of a vector

Function form_slice

unsafe fn form_slice<T, U>(p: *T, len: uint, f: fn(&&& [T]) -> U) -> U

Form a slice from a pointer and length (as a number of units, not bytes).

Function from_buf

unsafe fn from_buf<T>(ptr: *T, elts: uint) -> ~[T]

Constructs a vector from an unsafe pointer to a buffer

Function set_len

unsafe fn set_len<T>(&&v: ~[const T], new_len: uint)

Sets the length of a vector

This will explicitly set the size of the vector, without actually modifing its buffers, so it is up to the caller to ensure that the vector is actually the specified size.

Function to_ptr

unsafe fn to_ptr<T>(v: ~[const T]) -> *T

Returns an unsafe pointer to the vector's buffer

The caller must ensure that the vector outlives the pointer this function returns, or else it will end up pointing to garbage.

Modifying the vector may cause its buffer to be reallocated, which would also make any pointers to it invalid.