Switch or If

[Mark Smith]

On 23 Apr 2009, at 11:02, <camm29 at tesco.net> <camm29 at tesco.net> wrote:

> All ,
>
> Which is faster in a loop ?
>
> SWITCH or IF
>
>

This is a little test I did. I get about 35ms for 'switch', about  
20ms for 'if'. As Jim said though, I suspect it'll vary according to  
the kind and complexity of conditions you're testing.


on mouseUp
    put the millisecs into tStart
    repeat 10000
       put random(5) into tSw
       switchTest tSw
    end repeat
    put the millisecs - tStart into t1

    put the millisecs into tStart
    repeat 10000
       put random(5) into tIf
       ifTest tIf
    end repeat
    put the millisecs - tStart into t2

    put t1 && t2
end mouseUp

-----

on switchTest pSw
    switch pSw
       case 1

          break
       case 2

          break
       case 3

          break
       case 4

          break
       default

          break
    end switch
end switchTest

-----

on ifTest pIf
    if pIf = 1 then

    else if pIf = 2 then

    else if pIf = 3 then

    else if pIf = 4 then

    else

    end if
end ifTest

Best,

Mark