Chapter 9. The function Class Template
Form ever follows function.
— “The Tall Office BuildingArtistically Considered,”from Lippincott’s MagazineLOUIS HENRI SULLIVAN
One of the drawbacks of template programming is the proliferation of template instantiations. If you write a function template that takes a callable type as one of its type arguments and makes a function call through an object of that type, the code that is generated for an instantiation with a pointer to function is distinct from the code that is generated for an instantiation with a class type T1 that has a function call operator, and that code is distinct from the code that is generated for an instantiation with a different class type T2 that also has a function call operator. ...
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