1. for loop ?

ROB
  Why don't you allow us to modify the loop counter in a for loop
  like "C" instead of using "BASIC's" step method ?
  Add this to the wish list. :)
Bernie

new topic     » topic index » view message » categorize

2. Re: for loop ?

Bernie Ryan wrote:
>ROB
>  Why don't you allow us to modify the loop counter in a for loop
>  like "C" instead of using "BASIC's" step method ?
>  Add this to the wish list. :)
>Bernie

Oh boy, here comes the next wave of discussion... getlost


Rod

new topic     » goto parent     » topic index » view message » categorize

3. Re: for loop ?

Bernie Ryan wrote:

>ROB
>  Why don't you allow us to modify the loop counter in a for loop
>  like "C" instead of using "BASIC's" step method ?

Because that kind of thing would cause more problems than it would solve.
When you come across a "for" loop in a Euphoria program, you are absolutely
*guaranteed* that the counter is controlled solely by the "for" loop, and
*cannot* be changed unexpectedly by the programmer. This can help greatly
with debugging, since you *know* the loop counter can't be messed about
with.

If you really *do* need to modify your loop counter for whatever reason,
then instead of this...

for i = 1 to length(s) do
   -- whatever
end for

..you can code it like this...

integer i
i = 1
while i <= length(s) do
   -- whatever
   i += 1
end while

..modifying the loop counter to your heart's content. Not as elegant, I
know, but this way it is obvious that your loop counter is under the
complete control of the programmer. Having these very strong distinctions
between internally-controlled "for" loops and programmer-controlled "while"
loops makes understanding and debugging the code much, much easier.


Be seeing you,
   Gabriel Boehme

new topic     » goto parent     » topic index » view message » categorize

4. Re: for loop ?

Gabriel you wrote

>>Because that kind of thing would cause more problems than it would solve.
>>When you come across a "for" loop in a Euphoria program, you are
>>absolutely
>>*guaranteed* that the counter is controlled solely by the "for" loop, and
>>*cannot* be changed unexpectedly by the programmer. This can help greatly
>>with debugging, since you *know* the loop counter can't be messed about
>>with.

I have enough concentration and am smart enough to keep track of what is
happening in my for loops. I don't need no guarantees.

Thank you but I didn't need training in how to use a while loop.

Be seeing you,
   Bernie

new topic     » goto parent     » topic index » view message » categorize

5. Re: for loop ?

Bernie Ryan wrote:

>I have enough concentration and am smart enough to keep track of what is
>happening in my for loops. I don't need no guarantees.

Still, it's nice to have them, all the same.

>Thank you but I didn't need training in how to use a while loop.

Just trying to help, my friend.

Be seeing you, too,
   Gabriel Boehme blink

new topic     » goto parent     » topic index » view message » categorize

Search



Quick Links

User menu

Not signed in.

Misc Menu