---
name: "std::_Derives_from_unary_function"
section: "3"
platform: "linux"
package: "libstdc++6-4.3-doc"
version: "4.3.2-1.1"
release: "Debian 5.0 (Lenny)"
platforms: ["linux"]
url: "https://new.carta.tech/std::_Derives_from_unary_function"
---

# std::\_Derives\_from\_unary\_function(3)

## NAME

std::\_Derives\_from\_unary\_function -

## SYNOPSIS

Inherits std::\_\_sfinae\_types.

## Detailed Description

### template\<typename \_Tp\> struct std::\_Derives\_from\_unary\_function\< \_Tp \>

Determines if the type \_Tp derives from **unary\_function**.

Definition at line 215 of file tr1\_impl/functional.

### Public Types

typedef char **\_\_one**\

### Static Public Attributes

static const bool **value**\

## Author

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