How to Make SFINAE Pretty – Part 1: What SFINAE Brings to Code

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How to Make SFINAE Pretty – Part 1: What SFINAE Brings to Code

by Jonathan Boccara

From the article:

SFINAE is a bit like a windmill. It sits as a wart in the middle of an interface, BUT it’s useful to create elaborate static polymorphism, in particular before C++17 and if constexpr, and even in some use cases in C++17.

I thought we had to live with this tradeoff, until I watched a talk from Stephen Dewhurst at CppCon. In this inspring talk, Stephen shows how to turn SFINAE around to make it very expressive in an interface. Watching this talk changed my way of coding template interfaces...

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