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Re: For 2014?

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From	Ray Koopman <koopman@sfu.ca>
Newsgroups	comp.soft-sys.math.mathematica
Subject	Re: For 2014?
Date	Mon, 13 Jan 2014 06:56:17 +0000 (UTC)
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Use Range@9 instead of Range[9]

----- Ulrich Arndt <ulrich.arndt@data2knowledge.de> wrote:
> Yes, this is much faster - 5 times on my machine.
> Problem is that we get 141 chars even if we replace the re by b ;-).
> 
> But can someone explain the reason for the huge processing time difference?
> 
> Ulrich
> 
> 
> Am 07.01.2014 um 08:54 schrieb Costa Bravo:
> 
> > Ulrich Arndt wrote:
> >>
> >> 
> l=Range[9];r=StringJoin[Riffle[ToString/@l,#]]&/@Tuples[{"+","-","*","/",""},8];Grid[{#,Extract[r,Position[ToExpression/@r,#]]}&/@(l+2010)]
> >>
> >  faster
> >
> > 
> l=Range[9];re=ToExpression[r=StringJoin[Riffle[ToString/@l,#]]&/@Tuples[{"+","-","*","/",""},8]];Grid[{#,Extract[r,Position[re,#]]}&/@(l+2010)]
> >
> > --
> >  Costa
> >
> 
>

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Re: For 2014? Ray Koopman <koopman@sfu.ca> - 2014-01-13 06:56 +0000

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