function with nested FOR's?

[Shadowfaux]

Hey, i was wondering if someone could clarify a niggle for me.

If i have a function with 2 nested For loops, with 2 nested if-elseif statements within, would the program still run correctly (assuming the For's, if s and arrays were referencing seperate variables)?

From an english writing POV it would work well assuming that there was no way to call up either of the For's before they were needed.

pseudosyntax looks like this:

 #
local function XYZ(arg1-3,...)
          for k,v in pairs (array1) do
               if strfind (arg1, v) then
                   --perform stuff
               elseif
                  --otherStuff and
                   for k,v in pairs (array2) do
                     if strfind(arg1,v) do 
                              diff stuff from before
                        elseif
                               even more diff
  **Ends in all the right places**

Would this be an inefficient but working method? or would it fail from the start?

[Katae]

Originally Posted by Shadowfaux # local function XYZ(arg1-3,...) for k,v in pairs(array1) do if strfind(arg1, v) then --perform stuff elseif true then --otherStuff and for k,v in pairs(array2) do if strfind(arg1,v) then diff stuff from before elseif true then even more diff **Ends in all the right places**

Fixed, looks fine though.

[xConStruct]

Yep, it should work fine - the inner for-loop and if-blocks only get called when the containing block is executed. So when the block's condition is false, the contained code/loop won't get called.

But as you suggested it could be very inefficient.
In your example, the inner for-loop would be executed again for each iteration of the outer one, although the results would be the same, because the inner for-loop doesn't make use of any of the variables of the outer one. It is best to avoid nested loops if possible. But in the end it really depends on what you want to do in your "stuff" sections.