surprising filter benchmarks

[Alex Tweedly]

Richard Gaskin wrote:

>
> I figured the filter command would carry at least some overhead for 
> its convenience, but I had no idea how much!
>
> I wrote the test below to compare it with walking through a list line 
> by line, and the results were surprising:
>
> on mouseUp
>   put  fwdbCurTableData() into s -- gets 10,800 lines of
>   --                                tab-delimited data
>   --
>   -- Method 1: filter command
>   --
>   put format("*a*\t*r*\tr\t*\t*\t*\t*\t*") into tFilter   
>   put s into result1

Richard, I'm too busy (lazy??) to create some data and test this for 
timings right now, but this filter is more complex than you need - it 
verifies that there are the right number of tabs. You could simplify it to
put format("*a*\t*r*\tr\t*") into tFilter

and should get the same results more quickly.

-- Alex.

-- 
Alex Tweedly       http://www.tweedly.net



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