From: Xavier Noria <fxn@...>
Date: 2007-12-16T00:47:07+09:00
Subject: Re: Splitting string into array keeping delimiters

On Dec 15, 2007, at 4:39 PM, Sebastian Hungerecker wrote:

> Gary C40 wrote:
>> If I have this string:
>> abcd1234abc123
>> Now I want to separate the digit group with the non-digit group  
>> into an
>> array like this ["abcd",1234,"abc",123]. It's like re.split in  
>> Python.
>> How can I do it in Ruby with the least lines of code possible?
>> 'abcd1234abc123'.split(/\d+/) only returns ["abcd","abc"]
>
> If the regex has capturing groups you'll get those in the array as  
> well.
> 'abcd1234abc123'.split(/(\d+)/) #=> ["abcd", "1234", "abc", "123"]
>
> If you need the numbers as integers, you could use something like:
> 'abcd1234abc123'.scan(/(\D+)(\d+)?/).map {|nd,d| [nd,d.to_i]}
> #=> [["abcd", 1234], ["abc", 123]]
> (Maybe add flatten and compact)

Just another one:

   'abcd1234abc123'.scan(/\D+|\d+/) # ["abcd", "1234", "abc", "123"]

-- fxn