Module mem 

Basic functions for dealing with memory.

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

Structs

ManuallyDrop

A wrapper to inhibit the compiler from automatically calling T’s destructor. This wrapper is 0-cost.

Functions

align_of

Returns the ABI-required minimum alignment of a type in bytes.

align_of_val

Returns the ABI-required minimum alignment of the type of the value that val points to in bytes.

drop

Disposes of a value.

forget

Takes ownership and “forgets” about the value without running its destructor.

needs_drop

Returns true if dropping values of type T matters.

replace

Moves src into the referenced dest, returning the previous dest value.

size_of

Returns the size of a type in bytes.

size_of_val

Returns the size of the pointed-to value in bytes.

transmute^⚠

Reinterprets the bits of a value of one type as another type.

transmute_copy^⚠

Interprets src as having type &Dst, and then reads src without moving the contained value.

Unions

MaybeUninit

A wrapper type to construct uninitialized instances of T.