Answer by Tiger Hwang for C++14 Variable Templates: what is their purpose?...
I have a use case here.template<typename CT> constexpr CT MARK = '%';template<> constexpr wchar_t MARK<wchar_t> = L'%';which are used in a string processing template.`template...
View ArticleAnswer by cmaster - reinstate monica for C++14 Variable Templates: what is...
Well, you can use this to write compile time code like this:#include <iostream>template <int N> const int ctSquare = N*N;int main() { std::cout << ctSquare<7> <<...
View ArticleAnswer by Levi Morrison for C++14 Variable Templates: what is their purpose?...
Another practical example for C++14's variable templates is when you need a function for passing something into std::accumulate:template<typename T>T const & (*maxer) (T const &, T const...
View ArticleAnswer by user1508519 for C++14 Variable Templates: what is their purpose?...
And other than the pi example, how would it work with non-const variables?Currently, it seems to instantiate the variables separately for the type. i.e., you could assign 10 to n<int> and it...
View ArticleAnswer by n. m. could be an AI for C++14 Variable Templates: what is their...
we can have this feature just by wrapping a variable within a templated struct or classYes, but that would be gratuitous syntactic salt. Not healthy for the blood pressure.pi<double> conveys the...
View ArticleAnswer by Laurent LA RIZZA for C++14 Variable Templates: what is their...
I wonder whether something along these lines would be possible: (assuming availability of template lambdas)void some_func() { template<typename T> std::map<int, T> storage; auto store =...
View ArticleC++14 Variable Templates: what is their purpose? Any usage example?
C++14 will allow the creation of variables that are templated. The usual example is a variable 'pi' that can be read to get the value of the mathematical constant π for various types (3 for int; the...
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