text: I need to check to see if a string contains at least one number in it using Ruby (and I assume some sort of regex?).
  How would I do that?
  if /\d/.match( theStringImChecking ) then #yep, there's a number in the string end
  You can use the
  String class's
  =~ method with the regex
  /\d/ as the argument.
  Here's an example:
  s = 'abc123' if s =~ /\d/ # Calling String's =~ method. puts "The String #{s} has a number in it." else puts "The String #{s} does not have a number in it." end
  Alternatively, without using a regex:
  def has_digits?(str) str.count("0-9") > 0 end
  Rather than use something like "s =~ /\d/", I go for the shorter s[/\d/] which returns nil for a miss (AKA false in a conditional test) or the index of the hit (AKA true in a conditional test). If you need the actual value use s[/(\d)/, 1]
  It should all work out the same and is largely a programmer's choice.
  !s[/\d/].nil?
  Can be a standalone function -
  def has_digits?(s) return !s[/\d/].nil? end
  or ... adding it to the String class makes it even more convenient -
  class String def has_digits? return !self[/\d/].nil? end end
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