---
name: "std::const_mem_fun_ref_t"
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::const_mem_fun_ref_t"
---

# std::const\_mem\_fun\_ref\_t(3cxx)

One of the adaptors for member pointers.

## NAME

std::const\_mem\_fun\_ref\_t\< \_Ret, \_Tp \> - One of the **adaptors for member pointers**.

## SYNOPSIS

`#include <functional>`

Inherits **std::unary\_function\< \_Tp, \_Ret \>**.

### Public Types

**typedef** \_Tp **argument\_type**\
 `argument_type` is the type of the argument  **typedef** \_Ret **result\_type**\
 `result_type` is the return type

### Public Member Functions

**const\_mem\_fun\_ref\_t** (\_Ret(\_Tp::\***\_\_pf**)() const)\
 \_Ret **operator()** (const \_Tp &\_\_r) const\

## Detailed Description

### template\<typename \_Ret, typename \_Tp\>

class std::const\_mem\_fun\_ref\_t\< \_Ret, \_Tp \>"One of the **adaptors for member pointers**.

## Member Typedef Documentation

### typedef \_Tp std::unary\_function\< \_Tp , \_Ret \>::argument\_type` [inherited]`

`argument_type` is the type of the argument

### typedef \_Ret std::unary\_function\< \_Tp , \_Ret \>::result\_type` [inherited]`

`result_type` is the return type

## Author

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