in C++, is std::move still preferred when calling a function that takes in a const reference?

Question

Of the two versions of function calls below, is the one with std::move still preferred?

void myFunc(const std::string& myStr){
 //
}

std::string MyStr = "my string";

//For these 2 versions, should I still prefer std::move here to save a value copy, even when the function itself takes in a reference?
myFunc(std::move(MyStr));
myFunc(MyStr);

The Dreams Wind · Answer

When passing a value by reference std::move doesn't make any sense, because no instantiation is happening here, and there would be no side effects (provided you don't want to alter overload function candidate)

Thus for this particular case there is no any difference and you don't need std::move

in C++, is std::move still preferred when calling a function that takes in a const reference?

1 Answers