---
name: "std::_Maybe_unary_or_binary_function"
section: "3cxx"
platform: "linux"
package: "libstdc++-9-doc"
version: "9.3.0-22"
release: "Debian 11 (Bullseye)"
platforms: ["linux"]
url: "https://new.carta.tech/std::_Maybe_unary_or_binary_function/3cxx"
---

# std::\_Maybe\_unary\_or\_binary\_function(3cxx)

## NAME

std::\_Maybe\_unary\_or\_binary\_function\< \_Res, \_ArgTypes \>

## SYNOPSIS

## Detailed Description

### template\<typename \_Res, typename... \_ArgTypes\>

struct std::\_Maybe\_unary\_or\_binary\_function\< \_Res, \_ArgTypes \>" Derives from `unary_function` or `binary_function`, or perhaps nothing, depending on the number of arguments provided. The primary template is the basis case, which derives nothing.

Definition at line 53 of file refwrap.h.

## Author

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