Custom string iterators

Methods
Public Class methods
append_features(base)
    # File activesupport/lib/active_support/core_ext/string/iterators.rb, line 8
 8:         def self.append_features(base)
 9:           super unless '1.9'.respond_to?(:each_char)
10:         end
Public Instance methods
each_char() {|c| ...}

Yields a single-character string for each character in the string. When $KCODE = ‘UTF8’, multi-byte characters are yielded appropriately.

    # File activesupport/lib/active_support/core_ext/string/iterators.rb, line 14
14:         def each_char
15:           scanner, char = StringScanner.new(self), /./mu
16:           while c = scanner.scan(char)
17:             yield c
18:           end
19:         end