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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