ruby 返回中文长度

irb

irb(main):001:0> “郭爽”.length

=> 6

irb(main):002:0> $KCODE=’utf8′

=> “utf8″

irb(main):003:0> require “jcode”

=> true

irb(main):004:0> “郭爽”.jlength

=> 2

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