---
name: "std::default_initializable"
section: "3cxx"
platform: "linux"
package: "libstdc++-12-doc"
version: "12.4.0-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/std::default_initializable/3cxx"
---

# std::default\_initializable(3cxx)

\[concept.defaultinitializable\], concept default\_initializable

## NAME

std::default\_initializable - \[concept.defaultinitializable\], concept default\_initializable

## SYNOPSIS

`#include <concepts>`

## Concept definition

```
template<typename _Tp>
concept std::default_initializable =  constructible_from<_Tp>
      && requires
      {
        _Tp{};
        (void) ::new _Tp;
      }
```

## Detailed Description

\[concept.defaultinitializable\], concept default\_initializable

## Author

Generated automatically by Doxygen for libstdc++ from the source code.