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C++ keyword: typename

From cppreference.net
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(C++11)
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(C++26)

Usage

  • In the template parameter list of a template declaration , typename can be used as an alternative to class to declare type template parameters and template template parameters (since C++17) .
  • Inside a declaration or a definition of a template, typename can be used to declare that a dependent qualified name is a type.
  • typename can be used before a non-dependent qualified type name. It has no effect in this case.
(since C++20)

See also

(since C++20)