decltype

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Enlightening Usage of C++11 decltype

I\'ve just seen this really nice talk Rock Hard: C++ Evolving by Boris Jabes. In the section of the talk concerning Higher-Order Generic Programming he says that the following is an example of a funct[详细]

2023-04-10 04:50 分类：问答
Using decltype to cast this to const

I\'m attempting to solve a problem in which decltype will greatly simplify things, but I\'m running into an issue using decltype on *this and adding a const qualifier. The sample code below demonstrat[详细]

2023-04-04 15:27 分类：问答
Trailing return types, decltype and const-ness

I was merily experimenting with the new trailing return types, where I hit a problem with this (simplified) code[详细]

2023-04-01 17:38 分类：问答
The relationship between auto and decltype

Is auto x = initializer; equivalent 开发者_JAVA技巧to decltype(initializer) x = initializer; or decltype((initializer)) x = initializer;[详细]

2023-03-23 22:37 分类：问答
Decltype for return of a function

I am making a templated class that is a wrapper around any iterator. I am making the operator* this way:[详细]

2023-03-22 22:17 分类：问答
Behavior of decltype

Say I have an objec开发者_开发知识库t of some of stl container classes obj. I can define other object of same type this way:[详细]

2023-03-15 17:05 分类：问答
Perfect forwarding

If we have the following: template <class T> struct B{ T data; } struct A{ int data_array[100]; } int main()[详细]

2023-03-11 19:56 分类：问答
What is decltype(0 + 0)?

(Prompted by an answer.) Given N3290, §7.1.6.2p4, where the list items are unnumbered, but numbered here for our convenience:[详细]

2023-03-04 20:06 分类：问答
Why do we have to have late return type?

Take a look at this: template<class T> struct X { private: T value_; public: X():value_(T()) {} X(T value):value_(value) {}[详细]

2023-03-03 16:32 分类：问答
Correct way to use decltype as trailing return type

I very often see example of this form: template <typename T, typename U> auto add(T&& t, U&& u) -> decltype(std::forward<T>(t) + std::forward<U>(u))[详细]

2023-03-01 12:48 分类：问答