copy

Usage

copy y
copy!(x, y)

Signatures

copy: % $\to$ %
copy!: (%, %) $\to$ %

Parameter	Type	Description
x,y	%	Element of the type

Returns

copy(y) returns a copy of y, while copy!(x, y) returns a copy of y, where the storage used by x is allowed to be destroyed or reused, so x is lost after this call.

Remarks

Use copy before making in-place operations on a parameter. The call copy!(x, y) may cause x to be destroyed, so do not use it unless x has been locally allocated, and is guaranteed not to share space with other elements. Some functions are not necessarily copying their arguments and can thus create memory aliases.