I just tried this in 10dp5 and the sort didn’t completely bail (it put the
error value first) but it did error when including inline (as in the bug
report). If I add a try, then it will stop on the throw. Not sure how much
this would slow down execution though.
function myVal pStr
local tResult
try
put item 1 of pStr + item 2 of pStr into tResult
catch errorVariable
throw "Bad data"
end try
return tResult
end myVal
Brian Milby
br...@milby7.com
> On Aug 31, 2023, at 7:53 PM, Alex Tweedly via use-livecode
> <use-livecode@lists.runrev.com> wrote:
>
>
>> On 01/09/2023 00:37, Bob Sneidar via use-livecode wrote:
>> The function is adding the value of two chunks together and returning the
>> result. How does that even compute? Unless the + operator is doing something
>> totally different here…
>
> The code said:
>
>> sort lines tVariable by myVal(each)
>>
>> where the function is for example
>>
>> function myVal pStr
>> return item 1 of pStr + item 2 of pStr
>> end myval
> since it's sorting the lines of the container, it calls the custom function
> with each line in turn. The function simply adds together the first two items
> from the passed-in line, and returns that. The returned value is associated
> with the corresponding line - and then the container is sorted by those
> associated values.
>
> This works fine if the input variable is well formatted (i.e. first and
> second items of each line are numeric), but fails to give an error when
> something goes wrong - such as a non-numeric item.
>
> (and, yes - the dictionary description is misleading, if not simply
> incorrect. However, the "Tip" at the end describes the use of ustom
> functions).
>
> Alex.
>
>
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