---
name: "std::tr2::direct_bases"
section: "3"
platform: "linux"
package: "gcc"
version: "16.2.1+r23+gd564253eb6c8-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/std::tr2::direct_bases"
---

# std::tr2::direct\_bases(3)

Enumerate all the direct base classes of a class. Form of a typelist.

## NAME

std::tr2::direct\_bases\< \_Tp \> - Enumerate all the direct base classes of a class. Form of a typelist.

## SYNOPSIS

\#include \<type\_traits\>

### Public Types

typedef **\_\_reflection\_typelist**\< \_\_direct\_bases(\_Tp)... \> **type**\

## Detailed Description

### template\<typename \_Tp\>

struct std::tr2::direct\_bases\< \_Tp \>"Enumerate all the direct base classes of a class. Form of a typelist.

## Author

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