Possible Duplicate:
Meaning of ~> in version requirement
I often stumble upon the ~> operator.
eg.
gem 'httparty', '~> 0.5.2'
What does it mean?
views:
154answers:
3This should be a comment, not an answer.
AndiDog
2010-09-11 20:28:39
It doesn't seem to let me make a comment under any post other than mine
2010-09-11 20:36:52
I'll vote you up. Then your reputation exceeds 50 and you'll be able to comment.
steenslag
2010-09-11 20:39:28
@beavis - You need 50 rep to comment. So should be able to... now.
Martin Smith
2010-09-11 20:39:56
+3
A:
It means that any version >= 0.5.2 and < 0.6.0
Yehuda Katz recently wrote about this - http://yehudakatz.com/2010/08/21/using-considered-harmful-or-whats-wrong-with/
Vijay Dev
2010-09-11 20:22:05
+2
A:
It's called a pessimistic version constraint. It matches a gem version by dropping the last digit and comparing equality. For example, ~> 0.5.2 would match version 0.5.2 or 0.5.3, but not 0.5 or 0.6. It's basically equivalent to a constraint of >= 0.5.2, < 0.6.
mipadi
2010-09-11 20:25:04