Exit statement for procedures

[Tallguy]

i'm wondering if its possible to exit a procedure that doesn't have any conditional or normal loops in it. such as..

Turing:

proc main %code exit if /*something = true*/ end main

any ideas?

[[Gandalf]]

Usually you just let the procedure evaluate to the end, and then it 'exits' on its own. If you need to prematurely exit, you could use a empty return statement... Though this shouldn't really be necessary.

[Tallguy]

what i mean is in using an recusive programing where the procedures calls itself to run such as

Turing:

setscreen ("graphics:500,500") %set screen to a specfic size proc draw (x, y, x2, y2 : int) %declares a proc with prameters     drawbox (x, y, x2, y2, 12) %Draw the box     delay (500)     draw (x + 10, y + 10, x2 - 10, y2 - 10) %recursion re-call proc to run end draw draw (10, 10, 490, 490) % calls the proc to run

and lets say you want the program to stop when the box is a certain size, to exit, not using any type of loop...any ideas?

[Dusk Eagle]

Turing:

if /*condition*/ then     return else     %call procedure again end if

[[Gandalf]]

Or rather:

code:

proc ...     if box not certain size then         current body of proc     end if end ...

You really shouldn't use return when you're not explicitly returning something, as in a function.

[Dusk Eagle]

Yes, but since he specifically asked for it, I showed how it worked. I agree that you should avoid preemptively ending your procedures like above.

[Euphoracle]

Gandalf @ Tue May 05, 2009 10:25 am wrote:

Or rather:

code:

proc ...     if box not certain size then         current body of proc     end if end ...

You really shouldn't use return when you're not explicitly returning something, as in a function.

Return isn't for returning a value in turing, result is. Return is for terminating a procedure prematurely.

Alternatively, you could simply not call the procedure again by checking whether or not it will be done at that stage.

[[Gandalf]]

Euphoracle @ 2009-05-05, 3:53 pm wrote:

Return isn't for returning a value in turing, result is. Return is for terminating a procedure prematurely.

My bad, I'd forgotten. Nevertheless, the same hold true for its use. There's no reason to be using return, in this situation or pretty much any other. It's like going back to goto... You could, but it's only going to make your code sloppier.

Euphoracle @ 2009-05-05, 3:53 pm wrote:

Alternatively, you could simply not call the procedure again by checking whether or not it will be done at that stage.

Yes, this is what I mentioned.

[BigBear]

A procedure will follow through the code and leave the procedure

[Insectoid]

The idea is not to end the procedure via a conditional, but to use a conditional to keep it going. It will naturally end then if the conditional returns false.

code:

%instead of proc bleurgh     put "Blablabla"     exit bleurgh when foo = baz     bleurgh end beurgh %do proc bleurgh     put "Blablabla"     if foo ~= baz then %"~=" is the same as "not equals" or "!=" (!= will not work in Turing)         bleurgh     end if end bleurgh