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Re: Converting Strings to Ints.

• To: mathgroup at smc.vnet.net
• Subject: [mg63289] Re: Converting Strings to Ints.
• From: "Dr. Wolfgang Hintze" <weh at snafu.de>
• Date: Fri, 23 Dec 2005 05:08:17 -0500 (EST)
• References: <200512200919.EAA28501@smc.vnet.net> <200512210435.XAA14697@smc.vnet.net> <dode99$64c$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Use the function ToExpression.

1) These are your data

In[1]:= in = {"12223", "11313", "2424"}

Out[1]= {"12223", "11313", "2424"}

Check that the input is not numbers

In[8]:= NumberQ /@ in

Out[8]= {False, False, False}

2) Now transform to numbers (the list as a whole)

In[9]:= in2number = ToExpression[in]

Out[9]= {12223, 11313, 2424}

... and check

In[7]:= NumberQ /@ in2number

Out[7]= {True, True, True}

Regards,
Wolfgang

Chrisantha wrote:

> Dear All,
> 
> I have a list of strings representing numbers, i.e. a =  
> {"12223","11313","2424"} that I generated in XML and read into  
> mathematica. How do I convert this into a list of integers?
> 
> Yours Ever and Merry Christmas,
> 
> Chrisantha
> 
> 

• References:
  • Expression timing; a black art?
    • From: AES <siegman@stanford.edu>
  • Re: Expression timing; a black art?
    • From: "Carl K. Woll" <carlw@wolfram.com>