---
name: "std::Select2nd"
section: "3"
platform: "linux"
package: "libstdc++5-3.3-doc"
version: "1:3.3.6-15"
release: "Debian 4.0 (Etch)"
platforms: ["linux"]
url: "https://new.carta.tech/std::Select2nd"
---

# std::Select2nd(3)

## NAME

std::Select2nd -

## SYNOPSIS

Inherits **std::unary\_function\< Pair, Pair::second\_type \>**.

Inherited by **\_\_gnu\_cxx::select2nd\< Pair \>**.

### Public Types

typedef Pair **argument\_type**\
 `argument_type` *is the type of the argument (no surprises here)*  typedef Pair::second\_type **result\_type**\
 `result_type` *is the return type*

### Public Member Functions

Pair::second\_type & **operator()** (Pair &x) const\
 const Pair::second\_type & **operator()** (const Pair &x) const \

## Detailed Description

### template\<class Pair\> struct std::Select2nd\< Pair \>

Definition at line 495 of file stl\_function.h.

## Member Typedef Documentation

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

`argument_type` is the type of the argument (no surprises here)

Definition at line 103 of file stl\_function.h.

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

`result_type` is the return type

Definition at line 104 of file stl\_function.h.

## Author

Generated automatically by Doxygen for libstdc++-v3 Source from the source code.