From: "Peña, Botp" <botp@...>
Date: 2007-08-06T10:57:26+09:00
Subject: Re: Doubts on char patterns into String.each argument

On Behalf Of Carlos Ortega:
# and it says that the ' ' is just one of the White Characters
# that '\s' may represent ( the other ones are TAB and NEW LINE)

careful with "" vs ''

irb(main):020:0> puts "\s"

=> nil
irb(main):021:0> puts '\s'
\s
=> nil
irb(main):022:0>
irb(main):023:0* p "\s"
" "
=> nil
irb(main):024:0> p '\s'
"\\s"
=> nil


careful with "\s" vs /\s/ vs '\s'

irb(main):013:0> " \t\n*\n".split("\s*")
=> [" \t\n*\n"]
irb(main):014:0> " \t\n *\n".split("\s*")
=> [" \t\n", "\n"]
irb(main):015:0> " \t\n *\n".split("\s")
=> ["*"]
irb(main):016:0> " \t\n *\n".split(/\s*/)
=> ["", "*"]
irb(main):017:0> " \t\n *\n".split(/\s/)
=> ["", "", "", "", "*"]
irb(main):018:0> " \t\n *\n".split(/\s+/)
=> ["", "*"]
irb(main):019:0> " \t\n *\n".split('\s*')
=> [" \t\n *\n"]
irb(main):020:0> " \t\n *\n".split('\s')
=> [" \t\n *\n"]


irb(main):043:0> "Substring1\t\n Substring2\tSubstring3".each( "\s" ) { | substring |
irb(main):044:1*    puts "[" + substring +"]"
irb(main):045:1> }
[Substring1
 ]
[Substring2     Substring3]


read on string.each, string.split, string.scan

try,
$> qri string.each string.split string.scan

btw, your 2 sample codes do not differ but on your believed output :(  it might be better if you cutnpaste actual code run.

kind regards -botp