Ruby/String/match
Материал из Wiki.crossplatform.ru
if you surround a section with (), the data matched is made available separately from the rest.
x = "This is a test".match(/(\w+) (\w+)/) puts x[0] puts x[1] puts x[2]
match doesn"t require a regular expression as an argument, it converts any string supplied into a regular expression
puts "String has vowels" if "This is a test".match("[aeiou]")
Pattern matching with regular expressions
s = "hello" s =~ /[aeiou]{2}/ # => nil: no double vowels in "hello" s.match(/[aeiou]/) {|m| m.to_s} # => "e": return first vowel
The !~ operator returns true if it does not match the string, false otherwise:
color = "color colour" color !~ /colou?r/ # => false
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
use a method called match, provided by the String class
puts "String has vowels" if "This is a test".match(/[aeiou]/)
