https://github.com/boostorg/type_traits

Boost.org type_traits module
https://github.com/boostorg/type_traits

Last synced: 9 months ago
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Boost.org type_traits module

• Host: GitHub
• URL: https://github.com/boostorg/type_traits
• Owner: boostorg
• Created: 2013-01-13T15:59:07.000Z (almost 13 years ago)
• Default Branch: develop
• Last Pushed: 2025-03-15T16:57:49.000Z (10 months ago)
• Last Synced: 2025-04-04T00:08:27.426Z (9 months ago)
• Language: C++
• Homepage: http://boost.org/libs/type_traits
• Size: 4.52 MB
• Stars: 62
• Watchers: 10
• Forks: 82
• Open Issues: 39
• Metadata Files:
  • Readme: README.md

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README

          
Boost TypeTraits Library

============================

The Boost type-traits library contains a set of very specific traits classes, each of which encapsulate a single trait 

from the C++ type system; for example, is a type a pointer or a reference type? Or does a type have a trivial constructor, or a const-qualifier?

The type-traits classes share a unified design: each class inherits from the type true_type if the type has the specified property and inherits from false_type otherwise.

The type-traits library also contains a set of classes that perform a specific transformation on a type; for example, they can remove a top-level const or 

volatile qualifier from a type. Each class that performs a transformation defines a single typedef-member type that is the result of the transformation. 

The full documentation is available on [boost.org](http://www.boost.org/doc/libs/release/libs/type_traits/index.html).

|                  |  Master  |   Develop   |

|------------------|----------|-------------|

| Travis           | [![Build Status](https://travis-ci.org/boostorg/type_traits.svg?branch=master)](https://travis-ci.org/boostorg/type_traits)  |  [![Build Status](https://travis-ci.org/boostorg/type_traits.svg)](https://travis-ci.org/boostorg/type_traits) |

| Appveyor         | [![Build status](https://ci.appveyor.com/api/projects/status/lwjqu4087qiolje8/branch/master?svg=true)](https://ci.appveyor.com/project/jzmaddock/type-traits/branch/master) | [![Build status](https://ci.appveyor.com/api/projects/status/lwjqu4087qiolje8/branch/develop?svg=true)](https://ci.appveyor.com/project/jzmaddock/type-traits/branch/develop)  |

## Support, bugs and feature requests ##

Bugs and feature requests can be reported through the [Gitub issue tracker](https://github.com/boostorg/type_traits/issues)

(see [open issues](https://github.com/boostorg/type_traits/issues) and

[closed issues](https://github.com/boostorg/type_traits/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aclosed)).

You can submit your changes through a [pull request](https://github.com/boostorg/type_traits/pulls).

There is no mailing-list specific to Boost TypeTraits, although you can use the general-purpose Boost [mailing-list](http://lists.boost.org/mailman/listinfo.cgi/boost-users) using the tag [type_traits].

## Development ##

Clone the whole boost project, which includes the individual Boost projects as submodules ([see boost+git doc](https://github.com/boostorg/boost/wiki/Getting-Started)): 

    git clone https://github.com/boostorg/boost

    cd boost

    git submodule update --init

The Boost TypeTraits Library is located in `libs/type_traits/`. 

### Running tests ###

First, make sure you are in `libs/type_traits/test`. 

You can either run all the tests listed in `Jamfile.v2` or run a single test:

    ../../../b2                        <- run all tests

    ../../../b2 config_info            <- single test