scan through all the vowels in a string: [aeiou] means "match any of a, e, i, o, or u." : scan « String « Ruby

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Ruby » String » scan   scan through all the vowels in a string: [aeiou] means "match any of a, e, i, o, or u." "This is a test".scan(/[aeiou]/) { |x| puts x }   Related examples in the same category 1.  extract numbers from a string 2.  uses \d to match any digit, and the + that follows \d makes \d match as many digits in a row as possible. 3.  specify ranges of characters inside the square brackets 4.  Scan as split 5.  Splitting Sentences into Words 6.  scan a here document 7.  Scan for \w+ 8.  Scan() string with hex value 9.  scan(/./u) string with hex value 10.  Count words for a string with quotation marks 11.  Just like /\w+/, but doesn't consider underscore part of a word. 12.  Anything that's not whitespace is a word. 13.  Accept dashes and apostrophes as parts of words. 14.  A pretty good heuristic for matching English words.

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