---
name: "__gnu_cxx::Project1st"
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/__gnu_cxx::Project1st"
---

# \_\_gnu\_cxx::Project1st(3)

## NAME

\_\_gnu\_cxx::Project1st -

## SYNOPSIS

Inherits **std::binary\_function\< Arg1, Arg2, Arg1 \>**.

Inherited by **\_\_gnu\_cxx::project1st\< Arg1, Arg2 \>**.

### Public Types

typedef Arg1 **first\_argument\_type**\
 *the type of the first argument (no surprises here)*  typedef Arg2 **second\_argument\_type**\
 *the type of the second argument*  typedef Arg1 **result\_type**\
 *type of the return type*

### Public Member Functions

Arg1 **operator()** (const Arg1 &x, const Arg2 &) const\

## Detailed Description

### template\<class Arg1, class Arg2\> struct \_\_gnu\_cxx::Project1st\< Arg1, Arg2 \>

Definition at line 204 of file ext/functional.

## Member Typedef Documentation

### typedef Arg1 std::binary\_function\< Arg1 , Arg2 , Arg1 \>::first\_argument\_type` [inherited]`

the type of the first argument (no surprises here)

Definition at line 112 of file stl\_function.h.

### typedef Arg2 std::binary\_function\< Arg1 , Arg2 , Arg1 \>::second\_argument\_type` [inherited]`

the type of the second argument

Definition at line 113 of file stl\_function.h.

### typedef Arg1 std::binary\_function\< Arg1 , Arg2 , Arg1 \>::result\_type` [inherited]`

type of the return type

Definition at line 114 of file stl\_function.h.

## Author

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