use 1.3.3
The use library solves the multi-mixin problem by allowing you to selectively mixin specific methods from a module rather than mixing in all of them. In addition, you can alias methods on the fly as they are mixed in, effectively allowing you to change the name of the mixin method.
Gemfile:
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安裝:
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Runtime 相依性套件 (1):
structured_warnings
>= 0.1.1
Development 相依性套件 (1):
rake
>= 0