---
name: "std::tr2::bases"
section: "3cxx"
platform: "linux"
package: "libstdc++-12-doc"
version: "12.4.0-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/std::tr2::bases/3cxx"
---

# std::tr2::bases(3cxx)

Sequence abstraction metafunctions for manipulating a typelist.

## NAME

std::tr2::bases\< \_Tp \> - Sequence abstraction metafunctions for manipulating a typelist.

## SYNOPSIS

`#include <type_traits>`

### Public Types

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

## Detailed Description

### template\<typename \_Tp\>

struct std::tr2::bases\< \_Tp \>"Sequence abstraction metafunctions for manipulating a typelist.

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

## Author

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