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Function `rt.lifetime._d_newitemU`

Allocate an uninitialized non-array item.


						
				extern(C) void* _d_newitemU
				(
				

				  scope const(TypeInfo) _ti
				

				) pure;

This is an optimization to avoid things needed for arrays like the _arrayPad(size).

- _d_newitemU leaves the item uninitialized - _d_newitemT zero initializes the item - _d_newitemiT uses a non-zero initializer from TypeInfo

Used to allocate struct instances on the heap.

struct Sz {int x = 0;}
struct Si {int x = 3;}

void main()
{
    new Sz(); // _d_newitemT(typeid(Sz))
    new Si(); // _d_newitemiT(typeid(Si))
}

Parameters

Name	Description
_ti	`TypeInfo` of item to allocate

Returns

newly allocated item

Authors

Walter Bright, Sean Kelly, Steven Schveighoffer

License

Distributed under the Boost Software License 1.0. (See accompanying file LICENSE)