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Type Traits that Describe the Properties of a Type

Categorizing a Type
General Type Properties
Relationships Between Two Types
Operator Type Traits

These traits are all value traits, which is to say the traits classes all inherit from integral_constant, and are used to access some numerical property of a type. Often this is a simple true or false Boolean value, but in a few cases may be some other integer value (for example when dealing with type alignments, or array bounds: see alignment_of, rank and extent).


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