Array Split vs Combine

[Bob Sneidar]

I get 483, 4325, 4280. It actually takes less time for me. 

Bob S


> On Mar 9, 2021, at 9:25 AM, Alex Tweedly via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> 
> On 09/03/2021 16:56, Sean Cole (Pi) via use-livecode wrote:
>> Hi all,
>> 
>> I have a tsv I split out as an array, process, then combine back to a tsv.
>> The tsv is 53MB (55,635,198 bytes) and has 228320 lines with 21 columns
>> (55406878 chars).
>> 
>> To load the tsv file : 434ms
>> To split the tsv to array : 506ms
>> To combine the array to a tsv : 2m 58s 214ms
>> 
>> Why does it take so much longer to combine than split?
> 
> No idea. It *doesn't* for me.
> 
> I get timings of
> 
> 367 725 919
> 
> (on my aging MacBook Pro)
> 
> Alex.
> 
>> Link to the file:
>> https://www.dropbox.com/s/r6aq3ysbj13o16o/Enhanced-GB.tsv?dl=0
>> Test code:
>> 
>> *put* the millisec into tTime1
>> *put* url("file:Enhanced-GB.tsv") into tTest
>> *put* the millisec into tTime2
>> *split* tTest using cr and tab
>> *put* the millisec into tTime3
>> *combine* tTest using cr and tab
>> *put* the millisec into tTime4
>> *put* tTime1,tTime2,tTime3,tTime4
>> 
>> 
>> Sean
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