Lecture 2 - Slide 11 : 29
Rvalues

An rvalue is an expression that is not an lvalue - an expression whose value does not have a fixed position in memory, such as a temporary object

  double e = 3.14;
  double d = f(5, e);
  int i = 5, k = i + 8;
  bool b = Point{1,2} == Point{3,4};

  double *pe = &3.14;     // error: Cannot take the address of a 3.14
  double *pd = &f(5, e);  // error: Cannot take the address of a f(5, e)
  int *pi = &(i + 8);     // error: Cannot take the address of (i + 8)
rval-1.cc
The rvalue example - in a bit of context.

An expression (in a given context) is either an Lvalue or an Rvalue - not both