The String class has the =~ method and the !~ operator.


If =~ finds a match, it returns the offset position where the match starts in the string:

color = "color colour"
color =~ /colou?r/ # => 13

1.	use a method called match, provided by the String class
2.	match doesn't require a regular expression as an argument, it converts any string supplied into a regular expression
3.	if you surround a section with (), the data matched is made available separately from the rest.
4.	The !~ operator returns true if it does not match the string, false otherwise:
5.	Pattern matching with regular expressions

The String class has the =~ method and the !~ operator. : match « String « Ruby