What is a temporary distribution?

Question

In C ++, what is temporary allocation and when is it used? Is there such a thing? This was mentioned in the TA course notes, but I could not find any information about it ...

Answer 1

When people say "temporary", they often refer to rvalues. These are objects created and not tied to the variable name, therefore they do not live outside the current statement. IE:

int foo()
{
     Do( Object() );
}

The created object () is the value of r that you can hear, called temporary.

Answer 2

I suspect that your TA could refer to objects without the name created during the evaluation of the expression.

SomeClass x(1), y(2), z(3);
SomeClass t = x + y + z;

x + y + z operator+() ; ( t).