---
name: "std::_Placeholder"
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::_Placeholder/3cxx"
---

# std::\_Placeholder(3cxx)

The type of placeholder objects defined by libstdc++.

## NAME

std::\_Placeholder\< \_Num \> - The type of placeholder objects defined by libstdc++.

## SYNOPSIS

`#include <functional>`

## Detailed Description

### template\<int \_Num\>

struct std::\_Placeholder\< \_Num \>"The type of placeholder objects defined by libstdc++.

**Since**

C++11

## Author

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