[specialized.construct]

# 26 Algorithms library [[algorithms]](./#algorithms)

## 26.11 Specialized <memory> algorithms [[specialized.algorithms]](specialized.algorithms#specialized.construct)

### 26.11.8 construct_at [specialized.construct]

[🔗](#lib:construct_at)

`template<class T, class... Args>
  constexpr T* construct_at(T* location, Args&&... args);

namespace ranges {
  template<class T, class... Args>
    constexpr T* construct_at(T* location, Args&&... args);
}
`

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/algorithms.tex#L14191)

*Constraints*: is_unbounded_array_v<T> is false[.](#1.sentence-1)

The expression ​::​new (declval<void*>()) T(declval<Args>()...) is well-formed when treated as an unevaluated operand ([[expr.context]](expr.context#term.unevaluated.operand "7.2.3 Context dependence"))[.](#1.sentence-2)

[2](#2)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/algorithms.tex#L14197)

*Mandates*: If is_array_v<T> is true, sizeof...(Args) is zero[.](#2.sentence-1)

[3](#3)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/algorithms.tex#L14201)

*Effects*: Equivalent to:if constexpr (is_array_v<T>)return ::new (*voidify*(*location)) T[1]();elsereturn ::new (*voidify*(*location)) T(std::forward<Args>(args)...);