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- <h1><a class="toc-backref" href="../refmanual.html#id1393">Sequences</a></h1>
- <p id="label-sequences">Compile-time sequences of types are one of the basic concepts of C++
- template metaprogramming. Differences in types of objects being
- manipulated is the most common point of variability of similar, but
- not identical designs, and these are a direct target for
- metaprogramming. Templates were originally designed to address this
- exact problem. However, without predefined mechanisms for
- representing and manipulating <em>sequences</em> of types as opposed to
- standalone template parameters, high-level template metaprogramming
- is severely limited in its capabitilies.</p>
- <p>The MPL recognizes the importance of type sequences as a fundamental
- building block of many higher-level metaprogramming designs by
- providing us with a conceptual framework for formal reasoning
- and understanding of sequence properties, guarantees and
- characteristics, as well as a first-class implementation of that
- framework — a wealth of tools for concise, convenient,
- conceptually precise and efficient sequence manipulation.</p>
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