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C++ Language/Templates/Metaprogramming/CollectionOfTypes
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Some template-metafunctions may compute a type (or even a collection of types) as their template-metareturn.
For these template-metafunctions, the established convention is to name that result type (a nested type alias).
Additional information about a template-metafunction computing a collection of types (includes interactive examples)