std::mem - Rust (original) (raw)
Expand description
Basic functions for dealing with memory.
This module contains functions for querying the size and alignment of types, initializing and manipulating memory.
Expands to the offset in bytes of a field from the beginning of the given type.
Opaque type representing the discriminant of an enum.
A wrapper to inhibit the compiler from automatically calling T’s destructor. This wrapper is 0-cost.
AssumeExperimental
Configurable proof assumptions of TransmuteFrom.
TransmuteFromExperimental
Marks that Src is transmutable into Self.
Returns the ABI-required minimum alignment of a type in bytes.
Returns the ABI-required minimum alignment of the type of the value that val points 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_ofDeprecated
Returns the ABI-required minimum alignment of a type in bytes.
min_align_of_valDeprecated
Returns the ABI-required minimum alignment of the type of the value that val points to in bytes.
Returns true if dropping values of type T matters.
Moves src into the referenced dest, returning the previous dest value.
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 dest with the default value of T, returning the previous dest value.
Reinterprets the bits of a value of one type as another type.
Interprets src as having type &Dst, and then reads src without moving the contained value.
uninitialized⚠Deprecated
Bypasses 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 T represented by the all-zero byte-pattern.
align_of_val_raw⚠Experimental
Returns the ABI-required minimum alignment of the type of the value that val points to in bytes.
copyExperimental
Bitwise-copies a value.
forget_unsizedExperimental
Like forget, but also accepts unsized values.
size_of_val_raw⚠Experimental
Returns the size of the pointed-to value in bytes.
variant_countExperimental
Returns the number of variants in the enum type T.
A wrapper type to construct uninitialized instances of T.