extremely weird and frustrating...

Alex Tweedly alex at tweedly.net
Wed Apr 2 08:27:32 EDT 2014


(answering my own responses again :-)

It depends what your file contains if the time is more than one hour. If 
the time was, say, sixty-five-and-a-half minutes, would the file entry 
be   65:30   or   1:05:30

If it's the former, then Mark's two-step sort is the right answer.
If it's the latter, then my custom function sort given earlier will work.
If it could be either - then you'd need to extend the custom function; 
this will work for either 65:30 or 1:05:30

function hoursMinsSecs pTime
   -- change a time in mins:secs to hours:mins:secs
   set the itemDel to ":"
   if  the number of items in pTime = 2 then
     put item 1 of pTime into tMins
     put tMins div 60 into tHours
     put tMins mod 60 into tMins
      return tHours & ":" & tMins & ":" & item 2 of pTime
   end if
    return pTime -- already is hours:mins:secs
  end hoursMinsSecs

And if minutes can be negative, then .... that's left as an exercise :-)

-- Alex.

On 02/04/2014 12:04, Alex Tweedly wrote:
>
> I think of 16:33 as sixteen hours and 33 minutes - LC won't interpret 
> it as minutes and seconds, and thus anything above 23:59 is invalid - 
> and therefore apparently interpreted as "0:00"
>
> Unfortunately I can't find a definitive list of valid formats in the 
> docs, but nothing in the dictionary entry for 'convert' includes 
> mins:secs - it's always either hours:mins or hours:mins:secs, so I'm 
> fairly sure that's what's happening.
>
>
> (You could use a sort by custom function to convert them all to 
> hours:min:secs , e.g.
>
> sort field myTimes descending dateTime by hoursMinsSecs(each)
>
> function hoursMinsSecs pTime
>   -- change a time in mins:secs to hours:mins:secs
>   set the itemDel to ":"
>   if  the number of items in pTime = 2 then
>      return "0:" & pTime
>   end if
>    return pTime -- already is hours:mins:secs
>  end hoursMinsSecs
>
> -- Alex.
>
>
> On 02/04/2014 09:02, larry at significantplanet.org wrote:
>> Sorry Alex, I do not understand.
>>
>> 16:33 is sixteen minutes and 33 seconds.
>> So why is 25:34 not twenty-five minutes and 34 seconds?
>> Last time I checked, there are 60 minutes in an hour.
>>
>> ----- Original Message ----- From: "Alex Tweedly" <alex at tweedly.net>
>> To: <use-livecode at lists.runrev.com>
>> Sent: Wednesday, April 02, 2014 1:59 AM
>> Subject: Re: extremely weird and frustrating...
>>
>>
>>> 25:34 and 34:55 are not valid dateTimes, so where those lines get 
>>> sorted to is not well undefined; it looks as though LC simply 
>>> decides to give them a '0:00'.
>>>
>>> Apart from those two lines, it looks (to me) like the result is 
>>> correct. Isn't it ?
>>>
>>> -- Alex.
>>>
>>>
>>> On 02/04/2014 08:41, larry at significantplanet.org wrote:
>>>> Here is my script line:
>>>> sort field myTimes descending dateTime
>>>>
>>>>
>>>> And here is the result:
>>>> 16:33
>>>>
>>>> 15:56
>>>>
>>>> 12:16
>>>>
>>>> 11:35
>>>>
>>>> 9:14
>>>>
>>>> 7:47
>>>>
>>>> 2:08
>>>>
>>>> 1:22
>>>>
>>>> 25:34
>>>>
>>>> 34:55
>>>>
>>>>
>>>>
>>>> Here is my other script line:
>>>>
>>>> sort field myTimes ascending dateTime
>>>>
>>>> And here is the result for that:
>>>>
>>>> 25:34
>>>>
>>>> 34:55
>>>>
>>>> 1:22
>>>>
>>>> 2:08
>>>>
>>>> 7:47
>>>>
>>>> 9:14
>>>>
>>>> 11:35
>>>>
>>>> 12:16
>>>>
>>>> 15:56
>>>>
>>>> 16:33
>>>>
>>>>
>>>>
>>>> Seriously?
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>>>
>>>
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>>
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