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## Chapter 18. Boost.TypeTraits

### various authors

Copyright © 2000, 2005 Adobe Systems Inc, David Abrahams, Steve Cleary, Beman Dawes, Aleksey Gurtovoy, Howard Hinnant, Jesse Jones, Mat Marcus, Itay Maman, John Maddock, Thorsten Ottosen, Robert Ramey and Jeremy Siek

Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt )

## Introduction

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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 a 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.

Last revised: May 09, 2007 at 17:20:56 GMT |