Expand description
Basic functions for dealing with memory.
This module contains functions for querying the size and alignment of types, initializing and manipulating memory.
Macros§
- Expands to the offset in bytes of a field from the beginning of the given type.
Structs§
- Opaque type representing the discriminant of an enum.
- A wrapper to inhibit compiler from automatically calling
T’s destructor. This wrapper is 0-cost. - AssumeExperimentalWhat transmutation safety conditions shall the compiler assume that you are checking?
Traits§
- BikeshedIntrinsicFromExperimentalAre values of a type transmutable into values of another type?
Functions§
- Returns the ABI-required minimum alignment of a type in bytes.
- Returns the ABI-required minimum alignment of the type of the value that
valpoints to in bytes. - Returns a value uniquely identifying the enum variant in
v. - Disposes of a value.
- Takes ownership and “forgets” about the value without running its destructor.
- min_align_ofDeprecatedReturns the ABI-required minimum alignment of a type in bytes.
- min_align_of_valDeprecatedReturns the ABI-required minimum alignment of the type of the value that
valpoints to in bytes. - Returns
trueif dropping values of typeTmatters. - Moves
srcinto the referenceddest, returning the previousdestvalue. - Returns the size of a type in bytes.
- Returns the size of the pointed-to value in bytes.
- Swaps the values at two mutable locations, without deinitializing either one.
- Replaces
destwith the default value ofT, returning the previousdestvalue. - Reinterprets the bits of a value of one type as another type.
- Interprets
srcas having type&Dst, and then readssrcwithout moving the contained value. - uninitialized⚠DeprecatedBypasses Rust’s normal memory-initialization checks by pretending to produce a value of type
T, while doing nothing at all. - Returns the value of type
Trepresented by the all-zero byte-pattern. - align_of_val_raw⚠ExperimentalReturns the ABI-required minimum alignment of the type of the value that
valpoints to in bytes. - copyExperimentalBitwise-copies a value.
- forget_unsizedExperimentalLike
forget, but also accepts unsized values. - size_of_val_raw⚠ExperimentalReturns the size of the pointed-to value in bytes.
- variant_countExperimentalReturns the number of variants in the enum type
T.
Unions§
- A wrapper type to construct uninitialized instances of
T.