As a follow-up to this question, clang accepts the code provided there. This question has the following code: This question has a good answer, ...
As a follow-up to this question, clang accepts the code provided there. This question has the following code: This question has a good answer, ...
Consider a class with just a single member for this example. I was curious as to the proper way to overload the = operator and why one way works an ...
If we want to initialize an reference with an different type, we need to make it const (const type*) so that an temporary can be generated implicit an ...
I do not understand well enough why the second call of func in the code below does not work: When is the temporary string "abc" destroyed? EDIT1 ...
To my surprise, std::runtime_error only has a const std::string& constructor, but no value constructor. Thus I am wondering if throw std::runtime_ ...
T&& operator[](std::size_t n) && noexcept {std::cout<<"move"<<std::endl; return std::move(vec[n]); } I cannot get the expe ...
cppreference is said that: any expression that designates a temporary object after temporary materialization is xvalue expression (since C++17). Temp ...
Consider the following function Foo: The line (1) should not create any temporaries due to return value optimization. But consider the following ca ...
Currently I'm doing some code reviews and stumbled on the following construct: My first feeling was that the iterator is faulty here, as toList() r ...
Why if Will give an UB This: will be OK? I guess that in first case temporary object expires right after end of the expression const string&am ...
C code Output C++ code Output I know about the "Rule of three", but code becomes complicated and most compilers don't give errors if we do ...
Given a matrix template class mat<M,N,T> the following member function allows me to efficiently transpose a row vector or a column vector, since ...
As you know in C++, if a temporary object is bound to a local reference, then the lifetime of the temporary is extended till the end of the scope. Bu ...
Here, when I push to the stack, why are the objects being destroyed? #include <iostream> #include <stack> class One { private: i ...
Compiling this with g++ has no warnings but with clang++ prints the following: Is this incorrect? does get(0).c_arr not return a pointer to a glo ...
I'd like to implement a non-copy data trim_left function, but would like to not allow it to accept temporary parameters to make the returned string_vi ...
Consider the following code: Is the above well-formed code or UB? My doubts are about the reference returned from get(), which becomes dangling at ...
I have a std::vector of Trees, a custom type, and I have a loop which pushes back a tot of Trees to the vector. The problem is: I need push back tempo ...
Hi stackoverflow community, I'm a few months into C++ and recently I've been trying to grasp the concepts revolving around the "new" value categories ...
In an article about reference initialization at cppreference.com (Lifetime of a temporary), it says: a temporary bound to a return value of a func ...