Module mem

1.6.0 · Source

Expand description

Basic functions for dealing with memory.

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

Structs§

Discriminant: Opaque type representing the discriminant of an enum.
ManuallyDrop: A wrapper to inhibit the compiler from automatically calling T’s destructor. This wrapper is 0-cost.

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.
discriminant: Returns a value uniquely identifying the enum variant in v.
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.
swap: Swaps the values at two mutable locations, without deinitializing either one.
take: Replaces dest with the default value of T, returning the previous dest value.
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.
zeroed^⚠: Returns the value of type T represented by the all-zero byte-pattern.
size_of_val_raw^⚠Experimental: Returns the size of the pointed-to value in bytes.