Module core::mem

Basic functions for dealing with memory.

This module contains functions for querying the size and alignment of types, initializing and manipulating memory.

Re-exports

pub use intrinsics::transmute;

Structs

Discriminant	Opaque type representing the discriminant of an enum.
PinMut	[ Experimental ] A pinned reference.

Functions

align_of	Returns the ABI-required minimum alignment of a type.
align_of_val	Returns the ABI-required minimum alignment of the type of the value that val points to.
discriminant	Returns a value uniquely identifying the enum variant in v.
drop	Disposes of a value.
forget	Leaks a value: takes ownership and "forgets" about the value without running its destructor.
min_align_of	[ Deprecated ] Returns the ABI-required minimum alignment of a type.
min_align_of_val	[ Deprecated ] Returns the ABI-required minimum alignment of the type of the value that val points to.
needs_drop	Returns whether dropping values of type T matters.
replace	Replaces the value at a mutable location with a new one, returning the old value, without deinitializing either one.
size_of	Returns the size of a type in bytes.
size_of_val	Returns the size of the pointed-to value in bytes.
swap	Swaps the values at two mutable locations, without deinitializing either one.
transmute_copy⚠	Interprets src as having type &U, and then reads src without moving the contained value.
uninitialized⚠	Bypasses Rust's normal memory-initialization checks by pretending to produce a value of type T, while doing nothing at all.
zeroed⚠	Creates a value whose bytes are all zero.

Unions

ManuallyDrop

A wrapper to inhibit compiler from automatically calling T’s destructor.