Re: regular expression gurus--help!

Hi --

On Mon, 22 Jun 2009, Harry Kakueki wrote:

On Sun, Jun 21, 2009 at 9:26 PM, Sebastian
Hungerecker<sepp2k@xxxxxxxxxxxxxx> wrote:

"abcdefghijkl".scan(/(.)(?=(..))/).map(&:join)
=> ["abc", "bcd", "cde", "def", "efg", "fgh", "ghi", "hij", "ijk", "jkl"]

HTH,
Sebastian



I am not the OP, but thanks for that solution.
I learned more about regular expressions and relearned something about scan.

It did not work on my machine so I changed it to this.
p "abcdefghijkl".scan(/(.)(?=(..))/).map{|x| x.join}

Is this map(&:join) using 1.9?

Yes. In general, &obj in that position triggers the use of obj.to_proc
as the code block for the method call, and in 1.9 there's a built-in
Symbol#to_proc method.


David

--
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