#Include <type_traits> template<typename T1 , typename T2 , typename RT =

Question

#Include <type_traits> template<typename T1 , typename T2 , typename RT =

std::decay_t<decltype(true ? T1() : T2())>>
RT max(T1 a, T2 b)
{
return b < a ? a : b;
}

what does std::decay_t do ? I googled it but why one should use it ?
why it isn't std::decay_t<decltype(true ? T1 : T2)> ?

0

27.04.2019

2 ответов

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Parra

basically it returns the same type without & or const, and converts arrays like [] into *

0

27.04.2019

Parra · Accepted Answer

Parra

https://en.cppreference.com/w/cpp/types/decay

0

27.04.2019

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#Include <type_traits> template<typename T1 , typename T2 , typename RT =

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