From: YANAGAWA Kazuhisa <kjana@...4lab.to>
Date: 2004-09-19T13:02:16+09:00
Subject: Re: Method improvement request .--

In Message-Id: <414CA862.7090402@earthlink.net>
Charles Hixson <charleshixsn@earthlink.net> writes:

> # parse1 separates a chunk into the non-word stuff before it, the word
> stuff, and the non-word stuff after it

String#split includes a captured portion in a result array, so you can do:

    irb(main):008:0> "!@#456&*(".split(/([\w\-.]+)/, 3)
    => ["!@#", "456", "&*("]
    irb(main):009:0> "456&*(".split(/([\w\-.]+)/, 3)
    => ["", "456", "&*("]
    irb(main):010:0> "!@#456".split(/([\w\-.]+)/, 3)
    => ["!@#", "456", ""]

If a string has extra word-nonword pairs, you should consider that.


> # parse2 takes a hunk of word stuff, and possibly separates it at a
(snip)
> # parse3 takes a hunk of word stuff, and possibly separates it at an

So you just do:

    def parse_chunk(chunk, regexp)
      chunk.split(regexp, 3).each {|v| yield(v)}
    end
      
    def parse2(chunk, &block)
      parse_chunk(chunk, /(\.\.\.)/, &block)
    end

    def parse3(chunk, &block)
      parse_chunk(chunk, /(--)/, &block)
    end


-- 
kjana@dm4lab.to                                     September 19, 2004
Every body's business is nobody's business.