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Discussion on: Different ways to achieve SFINAE

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Pierre Gradot

If the substitution leads to invalid code, the compilation will not fail, it'll not be reported as an error because a substitution failure is not an error.

Maybe the clearest explanation of what SFNIAE really is :)

And if we want to avoid putting ::type at the end, we have the std::enable_if_t helper at our hands

And we also have std::is_integral_v to avoid puttin ::value ;)