SRL Archive - Bugs

For some strange reason,

while BooleanFunction() do
  Stuff;

kept doing Stuff() although BooleanFunction() did not return true.

I changed it to

repeat
  Stuff;
until(not BooleanFunction);

and it solved the problem.


????

Is it doing the same for any condition?

I've had while do loops act weird too, thats why I dont currently use them.

Neither loop should differ, only one being a pre-test (the while) while the other is a post-test (repeat) loop.

Are you sure there is nothing in Stuff() that affects the result of BooleanFunction()?

Send your script over.

From: Daniel
Neither loop should differ, only one being a pre-test (the while) while the other is a post-test (repeat) loop.

Are you sure there is nothing in Stuff() that affects the result of BooleanFunction()?

Send your script over.

Yes I'm positive. The code worked perfectly with repeat loop, and got stuck in an infinite loop with while loop.

From: marpis
Yes I'm positive. The code worked perfectly with repeat loop, and got stuck in an infinite loop with while loop.

How many iterations of your loop are you expecting?

From: Daniel
How many iterations of your loop are you expecting?

The BooleanFunction was a custom InFight(), and it just didn't break from the loop when I used while loop, but with repeat it worked.

Depending on the use it'd do different things?

for example;

while i=5 do
writeln('We have:'+inttostring(i)+ 'items')

i guess somewhere in the while loop you'd have to put an If to exit?

if(i=5) then
repeat
Action1;
until(not i=5)

This is what you'd do with repeat in this situation? with if you can do more in this situation.

not sure about it but this is what i see?

From: marpis
Yes I'm positive. The code worked perfectly with repeat loop, and got stuck in an infinite loop with while loop.

By perfect you mean it went through one iteration of the repeat loop? Because a repeat loop breaks out if the test is true whereas the while loop breaks out if the test is false.

Did you use the correct structure for the loop? It should be like..

while [boolean] do
   begin
      stuff;
   end;
until [boolean]

A repeat loop will always execute at least once, since it is a post test like Daniel said. Could that be the problem?

EDIT: no that Cant be. Does simba have its own loop programmed? Or does it have f Pasca
l do it

From: eXoTiK
Did you use the correct structure for the loop? It should be like..

while [boolean] do
   begin
      stuff;
   end;
until [boolean]

thats incorrect
structures are like so

while [boolean] do
   begin
      stuff;
   end;

repeat
  stuff;
until [boolean]

From: m34tcode
A repeat loop will always execute at least once, since it is a post test like Daniel said. Could that be the problem?

no it isnt

from what i understand the while loop is still executing even though the bool is false

~shut

I think they might be blaming simba for the cause, I had problem like this before ( not in loops) when I was trying to make a function where the variable replaces it self or something like that, where my logic should be correct but its not letting me do what I want.

I might be wrong but try reinstall simba? :(

Marpis
try this

while BooleanFunction do
begin
  writeln(BooleanFunction);
  Stuff;
end;

function RandomBoolean: Boolean;
begin
  Result := (Random(10) = 1);
end;

begin
  while (not (RandomBoolean)) do
    WriteLn('while True');
  repeat
    WriteLn('repeat True');
  until (RandomBoolean);
end.

Worked fine?

From: Wanted

function RandomBoolean: Boolean;
begin
  Result := (Random(10) = 1);
end;

begin
  while (not (RandomBoolean)) do
    WriteLn('while True');
  repeat
    WriteLn('repeat True');
  until (RandomBoolean);
end.

Worked fine?

Yeah, I did the same thing and it worked for me.

I'm starting to blame PascalScript for this issue, and IIRC, it was (or something similar, involving a while loop) a bug in previous versions of PascalScript?