Yes, your description is correct (except for saying the behavior is
"puzzling" :-)
The first case you are passing a single parameter (which happens to have
commas in its current content). You could have said " .... paramcount()
returns 1 as expected".
The second case you pass 5 values.
And the third case, as you say, expands the value first, so it becomes a
call with 5 parameters.
Alex.
On 29/11/2022 08:03, Tore Nilsen via use-livecode wrote:
I have come across a puzzling behavior when trying to use the content of a
field as parametres in a function, and I am trying to understand why.
I put the following in a field called «test»: 1,2,3,4,5
When I then call the function like this:
answer testFunction(field «test»), the paramCount() returns 1
If I use the values directly in the script:
answer testFunction(1,2,3,4,5), the paramCount() returns 5 as
expected
I will also get the expected result if a do the following:
put "answer testFunction(" & field «test» & ")" into tScript
do tScript
I guess the reason for this is that in the last example, LiveCode compiles the
content of the variable tScript before execution, and that this turns what is
first treated as a single block of text into a list of parametres.
The reason why I want to understand what is happening is that I am about to
teach my students how to write reusable code that will behave correctly for any
number of parametres.
So my question is if I am on the right track?
Best regards
Tore Nilsen
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