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typedef std::function<bool(int)> MyFunction;
That bool(int) template argument notation syntax - does it have a name? I tried to read C++ standard about this syntax and did not know what to search for.
Obviously, using it in other contexts seems to fail.
typedef bool(int) MyFunctionType; // does not work.
So I assume there is a special chapter about this syntax somewhere...
Thanks.
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I don't know of a common name for this. In the standard, it's called a type-id, after its grammar production.
The type-id bool(int) names the type "function of (int) returning bool".
It doesn't work with typedef (which uses the normal declaration syntax instead), but alias declared with using does use a type-id:
using MyFunctionType = bool(int);
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