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

# std::indirectly\_comparable(3cxx)

\[alg.req.ind.cmp\], concept indirectly\_comparable

## NAME

std::indirectly\_comparable - \[alg.req.ind.cmp\], concept `indirectly_comparable`

## SYNOPSIS

`#include <iterator>`

## Concept definition

```
template<typename _I1, typename _I2, typename _Rel, typename _P1 identity, typename _P2 identity>
concept std::indirectly_comparable =  indirect_binary_predicate<_Rel, projected<_I1, _P1>,
                                  projected<_I2, _P2>>
```

## Detailed Description

\[alg.req.ind.cmp\], concept `indirectly_comparable`

## Author

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