---
name: "std::indirectly_comparable"
section: "3"
platform: "linux"
package: "gcc"
version: "16.2.1+r23+gd564253eb6c8-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/std::indirectly_comparable"
---

# std::indirectly\_comparable(3)

\[alg.req.ind.cmp\], 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 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.