Thanks a lot Alan, you're right. I think i oversimplified my example.
The problem is that once you start nesting loops and try to make it more
dynamic code gets ugly quite fast. Eg, this is a bit more complex with
just one nested loop:
I have a set of boxes sorted by color and i want to do something with
each color. The array is sorted by color so this algorithm should
work.
<cfloop index="x" from="1" to="ArrayLen(boxes)">
<cfset samecolorboxes =ArrayNew(1)/>
<cfset ArrayAppend(samecolorboxes, boxes[x])/>
<!--- If there is more than one box with the same color --->
<cfif x LT ArrayLen(boxes) AND boxes[x+1].color EQ boxes[x].color>
<cfloop index="y" from="x+1" to="ArrayLen(boxes)">
<cfif boxes[y].color EQ boxes[y-1].color>
<cfset ArrayAppend(samecolorboxes,boxes[y])/>
<cfelse>
<cfset x=y/>
<cfbreak/>
</cfif>
</cfloop>
</cfif>
<cfset DoSomething(samecolorboxes)/>
</cfloop>
Of course i could just do:
<cfset samecolorboxes = ArrayNew(1)/>
<cfloop index="x" from="1" to="ArrayLen(boxes)">
<cfset ArrayAppend(samecolorboxes, boxes[x])/>
<cfif x is arraylen(boxes) or boxes[x].color is not boxes[x+1].color >
<cfset DoSomething(samecolorboxes)/>
<cfset samecolorboxes = ArrayNew(1)/>
</cfif>
</cfloop>
But i'm trying to show an example of an use case where it might be
useful to modify an index variable or skip more than one iteration
on a nested loop.
I'm a sysadmin with C skills and i'm learning CFML right now, so i
might be trying to do something in a very complex way that's easily
solvable in other way in CFML, but i just find weird that i'm not able
to modify index values. Is there any way of modifying index values or
some reason for not being able to do it?
Thanks a lot.
Regards.
On Tue, 2010-06-15 at 17:04 +0100, Alan Williamson wrote:
> yes you can ....
>
> <cfloop index="x" from="1" to="50">
> <cfoutput>#x# </cfoutput>
>
> <cfif (x > 5) && (x < 20)>
> <cfcontinue>
> </cfif>
> </cfloop>
>
>
>
> Victor Balada Diaz wrote:
> > Hello Alan,
> >
> > The problem with cfcontinue is that you can't skip in a clean way eg, 20
> > iterations. There is no such thing as cfcontinue times="20" nor just an
> > easy way to switch to a fixed position in the index, so i can not
> > achieve what i'm trying to do with cfcontinue. Do you have any other
> > idea?
>
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