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Michael Hemmer 2011-04-11 16:50:22 +00:00
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Developers_manual/doc_tex/Developers_manual/traits_classes.tex
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The concept of a traits class is central to \cgal. The name ``traits
class'' comes from a standard \CC\ design pattern
\cite{cgal:m-tnutt-95}; you may have heard about iterator traits which
follow this design pattern. In \cgal, traits classes are something
different, although the philosophy is similar in a certain sense.
follow this design pattern.
The traits class is used in template code to reflect properties (traits)
of the actual template argument.
On the lower levels, such as the number types,
the traits classes in \cgal\ indeed follow this pattern.
However, in higher level packages the term traits class is used in a slightly
different spirit. The most noticeable change is that the traits class becomes
the template argument. This allows to bundle several template
arguments and provides more flexibility as explained in the subsequent
sections.
\section{What are traits classes in \cgal?\label{sec:what_is_a_traits_class}}
\ccIndexMainItemDef{traits class}