2012-09-08 44 views

回答

3

gembundler

The specifier ~> has a special meaning, best shown by example. ~> 2.0.3 is 
identical to >= 2.0.3 and < 2.1. ~> 2.1 is identical to >= 2.1 and 
< 3.0. ~> 2.2.beta will match prerelease versions like 2.2.beta.12. 
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