Detecting in C++ whether a type is defined, part 4: Predeclaring things you want to probe

Note to those who got here via a search engine: This is the last part of the core portion of the series, but there are still parts to come. For the impatient, here’s the stuff to copy-paste: template<typename, typename = void> The post Detecting in C++ whether a type is defined, part 4: Predeclaring things you want to probe appeared first on The Old New Thing....

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