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

# std::predicate(3cxx)

\[concept.predicate\], concept predicate

## NAME

std::predicate - \[concept.predicate\], concept predicate

## SYNOPSIS

`#include <concepts>`

## Concept definition

```
template<typename _Fn, typename... _Args>
concept std::predicate =  regular_invocable<_Fn, _Args...>
      && __detail::__boolean_testable<invoke_result_t<_Fn, _Args...>>
```

## Detailed Description

\[concept.predicate\], concept predicate

## Author

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