---
name: "std::tr1::hash"
section: "3cxx"
platform: "linux"
package: "libstdc++6-4.4-doc"
version: "4.4.5-8"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/std::tr1::hash"
---

# std::tr1::hash(3cxx)

Class template hash.

## NAME

std::tr1::hash -

Class template hash.

## SYNOPSIS

Inherits **unary\_function\< \_Tp, size\_t \>**.

### Public Types

typedef \_Tp **argument\_type**\
 typedef size\_t **result\_type**\

### Public Member Functions

size\_t **operator()** (\_Tp \_\_val) const \
 template\<\> size\_t **operator()** (const **wstring** &) const\
 template\<\> size\_t **operator()** (**wstring**) const\
 template\<\> size\_t **operator()** (const **string** &) const\
 template\<\> size\_t **operator()** (**string**) const\
 template\<\> size\_t **operator()** (long double \_\_val) const\
 template\<\> size\_t **operator()** (double \_\_val) const\
 template\<\> size\_t **operator()** (float \_\_val) const\
 template\<\> size\_t **operator()** (unsigned long long \_\_val) const\
 template\<\> size\_t **operator()** (unsigned long \_\_val) const\
 template\<\> size\_t **operator()** (unsigned int \_\_val) const\
 template\<\> size\_t **operator()** (unsigned short \_\_val) const\
 template\<\> size\_t **operator()** (long long \_\_val) const\
 template\<\> size\_t **operator()** (long \_\_val) const\
 template\<\> size\_t **operator()** (int \_\_val) const\
 template\<\> size\_t **operator()** (short \_\_val) const\
 template\<\> size\_t **operator()** (char32\_t \_\_val) const\
 template\<\> size\_t **operator()** (char16\_t \_\_val) const\
 template\<\> size\_t **operator()** (wchar\_t \_\_val) const\
 template\<\> size\_t **operator()** (unsigned char \_\_val) const\
 template\<\> size\_t **operator()** (signed char \_\_val) const\
 template\<\> size\_t **operator()** (char \_\_val) const\
 template\<\> size\_t **operator()** (bool \_\_val) const\

## Detailed Description

### template\<typename \_Tp\> struct std::tr1::hash\< \_Tp \>

Class template hash.

Definition at line 38 of file tr1\_impl/functional\_hash.h.

## Member Typedef Documentation

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

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

Definition at line 102 of file stl\_function.h.

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

`result_type` is the return type

Definition at line 105 of file stl\_function.h.

## Author

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