Hello Mark,
> If you check empty = 0, you'll get false
I DO get false in the message box but in a handler where there is
nothing being passed in the parameter I get the following (note that
expressly putting empty into the parameter variable does give the
expected result.)
if I call "MyHandler" with this inside a stack script:
on MyHandler tParam --> where I didn't pass anything in tParam
put isNumber(tParam) into tParamIsNumber
put tParam = 0 into tParamIsZero
put (tParam is empty) into tParamIsEmpty
end MyHandler
it results in BOTH tParamIsZero = true AND tParamIsEmpty = true
(it is empty and zero?)
also, tParamIsNumber = false AND tParamIsZero = true (it is
not a number but it is zero?)
If I add the line: put empty into tParam
on MyHandler tParam
put empty into tParam
put isNumber(tParam) into tParamIsNumber
put tParam = 0 into tParamIsZero
put (tParam is empty) into tParamIsEmpty
end MyHandler
then ParamIsZero = false
Thanks for your help.
Scott Morrow
Elementary Software
(Now with 20% less chalk dust!)
web
http://elementarysoftware.com/On Jul 9, 2009, at 1:56 PM, Mark Schonewille wrote:
> Hi Scott,
>
> If you check empty = 0, you'll get false, but if empty*1 = 0 will
> return true. AFAIK it has always been like this. I assume that
> tParam gets parsed when it is passed to a function or command
> handler. You can change the offending line of your script into: "put
> tParam is zero and tParam is not empty"
>
> --
> Best regards,
>
> Mark Schonewille
>
> On 9 jul 2009, at 22:18, Scott Morrow wrote:
>
>> I'm having trouble with a script where an empty parameter is
>> evaluated as being zero. I've only been using rev 3.5 a short
>> while so maybe I've missed a setting or new feature?
>> In the message box all works as expected:
>>
>> put empty into tVariable
>> put charToNum(tVariable) --> (empty)
>> put isNumber(tVariable) --> false
>> put tVariable is zero --> false
>>
>>
>> but in my script, when the parameter is empty I get:
>>
>> on tHandler tParam -- where tParam is empty
>> put charToNum(tParam) --> (empty)
>> put isNumber(tParam) --> false
>> put tParam is zero --> true
>> end tHandler
>>
>> if I explicitly < put empty into tParam > inside the script then
>> all works as expected
>>
>> I've not had a lot of sleep but hoped coffee and a maple bar might
>> compensate.
>>
>> Scott Morrow
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