[Octave-bug-tracker] [bug #51962] "A++" assigns to 'ans' while "A += 1" and "A = A + 1" do not

[Mike Miller]

Follow-up Comment #7, bug #51962 (project octave):

IMHO redoing the ++ and -- operators to be the same thing as +=1 and -=1 would
not be a good thing and would break some behavior. The ++ and -- operators
currently mimic the C prefix and postfix behavior, which to me is a good and
intentional thing worth keeping.

Specifically, the following postfix behavior would change


>> x = 1;
>> y = x++;
x, y
x =  2
y =  1
>> x = 1;
>> y = (x += 1);
x, y
x =  2
y =  2


I think it would be better to fully document the differences, that "X += 1"
only affects X, while "X++" affects X and also returns a copy of the previous
value of X as a side effect, which may take up a lot of memory depending on
the size of X.

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?51962>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/