> rhkramer wrote: > > > An operation that produces the same results no matter how > > many times it is performed. > > Yeah, obviously it is a term from math and in practical and > applied engineering as is programming I thought of > a definition (not really) like this > > - apply once, you get the change > > - apply twice, thrice, or n'ice, nothing happens since the > change happened the first time and there is nothing to do > > Stefan and Tomás can tell I know... > > Anyway in math everyone understands it, and an example is the > absolute value, > > abs(x) = ... > > abs(abs(x)) = ... > > abs..(abs(abs(x))) = ... > > Same! > > And that's pretty close to what I just said. > > The difference if any seems to be, in math focus is on the > return value, so it is easy - is it the same or not? > > Im programming, focus is "can I apply it to make sure the job > is done, and don't have to think - has it already been done? - > because if so, no matter how many times, it won't ruin it, > just nothing will happen over and over and whatever stuff it > is applied on will be in the after-applied, desired form". > > That's right, right? Or am I wrong?
Sorry, but what's the practical point of all this discussion?
