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Groups > comp.soft-sys.math.mathematica > #3276
| From | Bill Rowe <readnews@sbcglobal.net> |
|---|---|
| Newsgroups | comp.soft-sys.math.mathematica |
| Subject | Re: pattern example |
| Date | 2011-06-24 11:49 +0000 |
| Organization | Steven M. Christensen and Associates, Inc and MathTensor, Inc. |
| Message-ID | <iu1tka$9jl$1@smc.vnet.net> (permalink) |
On 6/23/11 at 7:25 AM, fgutiers2002@yahoo.com (Francisco Gutierrez)
wrote:
>I find in Leonid's (Shiffrin) excellent book the following example
>(p. 122): f[3/5,4,5,2/3]/.f[x:(_Integer|_Rational)..]:>{x}
>According to the book, this returns {3/5,4,5,2/3}
>However, I get (Mathematica 8.0.1, Windows 7) f[3/5,4,5,2/3]
>What's wrong? Francisco
Perhaps it is platform dependent since I see:
In[1]:= f[3/5, 4, 5, 2/3] /. f[x : (_Integer | _Rational) ..] :> {x}
Out[1]= {3/5, 4, 5, 2/3}
In[2]:= $Version
Out[2]= 8.0 for Mac OS X x86 (64-bit) (February 23, 2011)
But isn't it simpler to use the functional construct?
In[3]:= List @@ f[3/5, 4, 5, 2/3]
Out[3]= {3/5, 4, 5, 2/3}
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Re: pattern example Bill Rowe <readnews@sbcglobal.net> - 2011-06-24 11:49 +0000
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