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MathGroup Archive 2007

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Re: String to List

  • To: mathgroup at
  • Subject: [mg77210] Re: String to List
  • From: fiaminamor at
  • Date: Tue, 5 Jun 2007 07:00:46 -0400 (EDT)
  • References: <f3jigv$dpo$>

On May 30, 5:09 am, "King, Peter R" <peter.k... at> wrote:
> I have a string which in general looks something like
>  a="{x,16,x,1T,x}"
> In other words it looks like a list with a mixture of characters and
> numbers and so on. I want to pick out the individual elements of this
> (using the commas as delimiters)

Mathematica has built in commands to parse structured text like that.
Look up ReadList, RecordSeparators, and WordSeparators in the
Mathematica book.  I tried it in Mathematica 5.2 and it worked.

In[1]:= a = "{x,16,x,1T,x}"

In[2]:= ReadList[ StringToStream[a],
                  RecordSeparators -> { {"{"}, {"}"} },
                  WordSeparators -> ","
                ] //InputForm

Out[2]//InputForm= {"x", "16", "x", "1T", "x"}

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