Add (typed)

SWF Action
Action Category: 
Arithmetic
Action Details: 
(typed)
Action Identifier: 
71
Action Structure: 
<n.a.>
Action Length: 
0 byte(s)
Action Stack: 
pop 2 (a), push 1 (a)
Action Operation: 
a1 = pop();
a2 = pop();
if(is_int(a1) && is_int(a2)) {
  i1 := (int)a1;
  i2 := (int)a2;
  r := i1 + i2;  // sum
}
else if(is_numeric(a1) && is_numeric(a2)) {
  f1 := (float)a1;
  f2 := (float)a2;
  r := f1 + f2;  // sum
}
else {
  s1 := (string)a1;
  s2 := (string)a2;
  r := s1 + s2;   // concatenation
}
push(r);
Action Flash Version: 
5
See Also: 
Add
Concatenate Strings
Subtract

Pops two numbers or two strings, computes the sum or concatenation and push the result back on the stack.

This action is typed meaning that it will automatically convert the parameters as required and in a very well defined manner1.

  • 1. I need to verify and make sure that the synopsis I give here is indeed correct.