Substitution failure is not an error: Difference between revisions

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std::is_detected was not merged into the C++17 standard
Add a link and less cryptic summary
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</source>
 
With the standardisation of the detection idiom in the [http://en.cppreference.com/w/cpp/experimental/lib_extensions_2 Library fundamental v2 (n4562)] proposal, the above code could be re-written as follows:
<source lang="cpp">
#include <iostream>