mirror of https://github.com/bsnes-emu/bsnes.git
40 lines
1.0 KiB
C++
40 lines
1.0 KiB
C++
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#ifndef NALL_UTILITY_HPP
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#define NALL_UTILITY_HPP
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#include <type_traits>
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#include <utility>
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namespace nall {
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template<bool C, typename T = bool> struct enable_if { typedef T type; };
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template<typename T> struct enable_if<false, T> {};
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template<typename C, typename T = bool> struct mp_enable_if : enable_if<C::value, T> {};
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template<typename T> inline void swap(T &x, T &y) {
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T temp(std::move(x));
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x = std::move(y);
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y = std::move(temp);
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}
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template<typename T> struct base_from_member {
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T value;
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base_from_member(T value_) : value(value_) {}
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};
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template<typename T> class optional {
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bool valid;
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T value;
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public:
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inline operator bool() const { return valid; }
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inline const T& operator()() const { if(!valid) throw; return value; }
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inline optional(bool valid, const T &value) : valid(valid), value(value) {}
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};
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template<typename T> inline T* allocate(unsigned size, const T &value) {
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T *array = new T[size];
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for(unsigned i = 0; i < size; i++) array[i] = value;
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return array;
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}
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}
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#endif
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