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Added helper functions in utils.hpp

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Jérôme 2019-03-30 11:48:51 +01:00
parent 8803ac9921
commit 5fb5764379
1 changed files with 16 additions and 0 deletions
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16
utils.hpp
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@ -2,12 +2,17 @@
#define DEF_utils #define DEF_utils
#include <ostream> #include <ostream>
#include <utility>
#define PRINT_VAR(x) std::cout << #x << "\t= " << (x) << "\n" #define PRINT_VAR(x) std::cout << #x << "\t= " << (x) << "\n"
#define PRINT_VEC(x); {std::cout << #x << "\t= "; \ #define PRINT_VEC(x); {std::cout << #x << "\t= "; \
for(unsigned int i_print_vec = 0 ; i_print_vec < (x).size() ; i_print_vec++) \ for(unsigned int i_print_vec = 0 ; i_print_vec < (x).size() ; i_print_vec++) \
std::cout << (x)[i_print_vec] << "\t"; \ std::cout << (x)[i_print_vec] << "\t"; \
std::cout << "\n";} std::cout << "\n";}
#define PRINT_STR(x) std::cout << (x) << "\n"
template<typename T, typename T2> auto min(const T & a, const T2 & b) -> decltype(a | b) { return (a < b) ? T(a) : T(b); }
template<typename T, typename T2> auto max(const T & a, const T2 & b) -> decltype(a | b) { return (a < b) ? T(b) : T(a); }
template<typename T, template<class,class...> class C, class... Args> template<typename T, template<class,class...> class C, class... Args>
std::ostream& operator<<(std::ostream& os, const C<T,Args...>& objs) std::ostream& operator<<(std::ostream& os, const C<T,Args...>& objs)
@ -17,4 +22,15 @@ std::ostream& operator<<(std::ostream& os, const C<T,Args...>& objs)
return os; return os;
} }
/// Convenience template class to do StdPairValueCatcher(a, b) = someFunctionThatReturnsAnStdPair<A,B>()
/// Instead of doing a = std::get<0>(result_from_function), b = std::get<1>(result_from_function)
template<typename A, typename B>
struct StdPairValueCatcher
{
A & a;
B & b;
StdPairValueCatcher(A & a_, B & b_) : a(a_), b(b_) {}
std::pair<A, B> const& operator=(std::pair<A, B> const& p) {a = std::get<0>(p); b = std::get<1>(p); return p; }
};
#endif #endif