Hi Camm,
Unless you're building something where the small difference in speed is
absolutely critical, I would seek to answer a different question: Which
structure will be easier to understand and maintain in the future when I
(or others) come back to it?
My 2 cents' worth -
Phil Davis
Mark Smith wrote:
On 23 Apr 2009, at 11:02, <cam...@tesco.net> <cam...@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
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Phil Davis
PDS Labs
Professional Software Development
http://pdslabs.net
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