Empty parameter in function

[croivo]

I have this function:

Code: Select all

function play item1, item2, item3, item4, item5, item6

repeat with numberVar = 1 to 6
      put ("item" & numberVar) into theNameOfHolder
      
      if theNameOfHolder is empty then
         answer ("Variable " & theNameOfHolder & " is empty!")
      end if
      
   end repeat

end play

Very often I won't call all 6 parameters... So I need to check somehow if some 'item' variables are empty or not.
I tried with this if statemet to check if it's empty, but it's not working... Any ides?

[SparkOut]

Quick answer: see "value" in the dictionary.

[croivo]

Thanks

[Klaus]

Hi croivo,

"play" is a reserved word in LC, so to avoid possible inconvenience
you really should rename your function!


Best

Klaus

[croivo]

Hi croivo,

"play" is a reserved word in LC, so to avoid possible inconvenience
you really should rename your function!


Best

Klaus

Yes yes I know, at the moment of writing I was not thinking about the name too much...

[SparkOut]

Longer answer, download, unzip and investigate this demo

[guenter.g]

You can use the functions paramcount() and param() (see in dictionary)

Code: Select all

function play1 item1, item2, item3, item4, item5, item6
   repeat with tParam = 1 to paramcount()
      if param(tParam) is empty then
         answer ("item" & tParam && "is empty!")
      end if
   end repeat
end play1