OpenEuphoria

Re: voting on GOTO

• Posted by Lucius L. Hilley III <euphoria at ?n?mar.com> Jun 05, 2008
• 1041 views

Matt Lewis wrote:
> 
> gshingles wrote:
> > 
> > Jim Brown wrote:
> > > 
> > > It is possible to check if a variable is uninitialized. The recommended
> > > way
> > > to deal with for loops is, if you must jump into a for loop, check if the
> > > variable
> > > is uninitialized and jump to a label that is right before the the
> > > beginning
> > > of the for loop statement to continue iteration.
> > > Jumping into for loops is discouraged, however.
> > 
> > That sounds scary.  But I vote yes, I'll just probably never use a goto. It
> > may have unforseen benefits and the problems are well known (and therefore
> > avoidable).
> 
> It's not really as scary as it sounds.  You could get a similar situation
> in this case:
> }}}
<eucode>
> integer x
> if foo then
>     x = 1
> end if
> ? x
> </eucode>
{{{

> In other words, you can't use uninitialized variables, and since a loop
> variable is initialized at the for statement...
> 
> Matt

yeah, I have run into that.

Forces you to choose.

integer x
if foo then
    x = 1
else     -- 2 more lines, Choose a direction.
   x = 0
end if
? x

--OR
integer x
x = 0 -- 1 line, Initial defaul value, May be overwritten very shortly.
if foo then
    x = 1
end if
? x

    Lucius L. Hilley III - Unkmar