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more type traits

master
Daniel Kolesa 2015-04-18 16:09:08 +01:00
parent 6247093ad9
commit 2c03469cf8
1 changed files with 36 additions and 0 deletions
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36
octa/traits.h
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@ -160,6 +160,42 @@ namespace octa {
(IsLvalueReference<T>::value || IsRvalueReference<T>::value)
> {};
/* add lvalue reference */
template<typename T> struct AddLvalueReference { typedef T &type; };
template<typename T> struct AddLvalueReference<T &> { typedef T &type; };
template<typename T> struct AddLvalueReference<T &&> { typedef T &type; };
template<> struct AddLvalueReference<void> {
typedef void type;
};
template<> struct AddLvalueReference<const void> {
typedef const void type;
};
template<> struct AddLvalueReference<volatile void> {
typedef volatile void type;
};
template<> struct AddLvalueReference<const volatile void> {
typedef const volatile void type;
};
/* add rvalue reference */
template<typename T> struct AddRvalueReference { typedef T &&type; };
template<typename T> struct AddRvalueReference<T &> { typedef T &&type; };
template<typename T> struct AddRvalueReference<T &&> { typedef T &&type; };
template<> struct AddRvalueReference<void> {
typedef void type;
};
template<> struct AddRvalueReference<const void> {
typedef const void type;
};
template<> struct AddRvalueReference<volatile void> {
typedef volatile void type;
};
template<> struct AddRvalueReference<const volatile void> {
typedef const volatile void type;
};
/* is array */
template<typename > struct IsArray : false_t {};