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### General <a id="type.traits.general">[[type.traits.general]]</a>
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Subclause [[type.traits]] describes components used by C++ programs,
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particularly in templates, to support the widest possible range of
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types, optimize template code usage, detect type related user errors,
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and perform type inference and transformation at compile time. It
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includes type classification traits, type property inspection traits,
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and type transformations. The type classification traits describe a
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complete taxonomy of all possible C++ types, and state where in that
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taxonomy a given type belongs. The type property inspection traits allow
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important characteristics of types or of combinations of types to be
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inspected. The type transformations allow certain properties of types to
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be manipulated.
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All functions specified in [[type.traits]] are signal-safe
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[[support.signal]].
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