If statements vs case

Hershel Fisch hershf at rgllc.us
Tue Feb 27 16:05:53 EST 2007


On 2/26/07 3:39 PM, "Richard Gaskin" <ambassador at fourthworld.com> wrote:

> Hershel Fisch wrote:
>> On 2/26/07 2:27 PM, "Shao Sean" <shaosean at wehostmacs.com> wrote:
>> 
>>> There are differences between SWITCH and IF-ELSE-IF statements in other
>>> languages, but in regards to Revolution someone from the engine team
>>> would be best to answer it.
>>> 
>>> In many languages SWITCH statements are converted into a hash table for
>>> much quicker lookups and using a SWITCH once or twice is slower than
>>> using an IF-ELSE-IF statement due to the SWITCH statement getting
>>> hashed, but using the same SWITCH statement multiple times will
>>> increase the speeds.
>>> Also, because of the fact that an IF-ELSE-IF statement is _always_
>>> evaluated, they can never be faster than a SWITCH statement (they can
>>> be just as fast, but never faster)
>> Sorry, what do you mean that IF-ELSE-IF is always evaluated?
>> Dosn't the "else" break it?
>> If 
>>  else
>>   if
>>  end if
Ok we got it, Now the question arises how is it in the "case" statements to
write an "else" without a following "if"

Switch tS
 case "a"
 do a
 break
'''Else'''
Do b
End switch

Thanks, to all Hershel




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