[Ruby] ruby 1.9 utf-8 string support
s = '測試' # => "\346\270\254\350\251\246"
s.encoding # => <Encoding:ASCII-8BIT>
s.force_encoding 'utf-8' # => "測試"
s[0] # => "測"
s[1] # => "試"
s[-1] # => "試"
s.size # => 2
s.length # => 2
('%5s' % s).force_encoding 'utf-8' # => " 測試"
('%-3s' % s).force_encoding 'utf-8' # => "測試 "
所以大概是預設 ascii-8bit,
有 utf-8 string 需求才手動強制轉為 utf-8 string 吧，
想必是效能考量...
refer the benchmark:
http://groups.google.com/group/comp.lang.ruby/msg/4373ec7ef2403c65
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12/18 02:48, , 1F
12/18 02:48, 1F
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