How do you loop through a string in Ruby?

Pretty simple question from a first-time Ruby programmer.

How do you loop through a slab of text in Ruby? Everytime a newline is met, I want to re-start the inner-loop.

def parse(input)
    ...
end

From stackoverflow

• str.each_line do |line|
      #do something with line
  end
  

• What Iraimbilanja said.

  Or you could split the string at new lines:

  str.split(/\r?\n|\r/).each { |line| … }
  

  Beware that each_line keeps the line feed chars, while split eats them.

  Note the regex I used here will take care of all three line ending formats. String#each_line separates lines by the optional argument sep_string, which defaults to $/, which itself defaults to "\n" simply.

  Lastly, if you want to do more complex string parsing, check out the built-in StringScanner class.

• You can also do with with any pattern:

  str.scan(/\w+/) do |w|
    #do something
  end
  

• str.each_line.chomp do |line|
    # do something with a clean line without line feed characters
  end
  

  I think this should take care of the newlines.

  Chuck : That won't work. String#each_line without a block returns an Enumerator, which doesn't respond to chomp. Beyond chomp doesn't take a block.