I’ve always thought that an operator like “a list of…” might be handy. In this
case a list of integers, so you could check to see if the list you want to sort
is a valid list of integers.
Bob S
On Sep 7, 2023, at 9:02 AM, Brian Milby via use-livecode
wrote:
It seems the error/bug is
I think it is putting all non-numeric values first as unsortable, then the
sortable items next. This seems to be the case because:
put "b,4,2,a,3,6" into tList;sort items of tList numeric ascending;put tList
Results in:
b,a,2,3,4,6
This implies that the non-numeric items are not being sorted
It seems the error/bug is related to the error being in the last value. If you
were to change the bug report to sort on the field itself, then the sort is
performed but the answer does not execute. If you clicked the button again,
then the answer does show. If you revert to the saved stack
Bob,
If you remove the “numeric” the result is “2,3,4,6,a”.
To me this implies that ASCII values are used as the sortKey. But that begs the
issue why, as in your post, with “numeric” included, the “a” appears first.
What makes the “a” a lower "numeric" value than “2”?
Craig
> On Sep 7, 2023,
For me,
put "4,2,a,3,6" into tList;sort items of tList numeric ascending;put tList
Results in:
a,2,3,4,6
Bob S
> On Sep 6, 2023, at 7:29 PM, Geoff Canyon via use-livecode
> wrote:
>
> From the original email:
>
> If the function myVal encounters a run-time error (in the example if one of
Neville.
My example was only to show that the sort command still maintains the ability
to accept concatenated sort criteria. This allows a single line of code to do
the work, and obviates the need for multiple sorts. In that sense it was a bad
example to use character "places" in a string.
From the original email:
If the function myVal encounters a run-time error (in the example if one of
the items is not a number) the sort command fails silently: the script
exits at that code line and the user is unaware that the sort (and the rest
of the handler) were not executed.
To be clear:
Ralph: Interesting. Your code works as you present it, sorting the given items
by the sortkey function f1 which adds 1 to each item. I do get the “sorting
failed” dialog.
But if I try the same thing using myVal modified as you suggest, which adds the
first and second items of each line of data
Geoff Canyon wrote (after a bravura display of how many different
ways there are to do things in LC!) :
And the function sort also sorts based on a negative infinity value
for
errors. I'm not sure I'd consider that a bug.
Hmm. I would. The sortKey function should tolerate any sort of
run-time
With 9.6.9 on a mac and a field where the second and third items of each
line are numbers:
sort lines of fld 1 numeric by item 2 of each + item 3 of each -- works
sort lines of fld 1 numeric by value(item 2 of each + item 3 of each) --
works
sort lines of fld 1 numeric by merge("[[item 2
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
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 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…
Bob S
On Aug 31, 2023, at 3:38 PM, J. Landman Gay via use-livecode
wrote:
Actually, the syntax is correct. It uses
Actually, the syntax is correct. It uses a custom sort function. The function call includes the
"each" which means it passes the correct parameter to the custom function, which then acts on
it and sends the result back to the calling handler for sorting. It's a nice way to customize
the
To be more clear, the argument to “by” needs to be a chunk statement, not a
value, followed by “of each”. Your function *might* work if you returned the
chunk expression instead of the actual value the chunk resolves to.
But why? I am not sure what the myVal() function accomplishes. Does the
I think you have to append “of each”. Sort lines of tVar by item 3 of each
Bob S
> On Aug 30, 2023, at 9:11 PM, Neville Smythe via use-livecode
> wrote:
>
> There is a bug in sorting a container using a function, as in
>
> sort lines tVariable by myVal(each)
>
> where the function is for
There is a bug in sorting a container using a function, as in
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
If the function myVal encounters a run-time error (in the example if one of the
items is
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