What does tilde-greater-than (~>) mean in Ruby gem dependencies? [duplicate]
It means "equal to or greater than in the last digit", so e.g. ~> 2.3 means
"equal to 2.3 or greater than 2.3, but less than 3.0", while ~> 2.3.0 would
mean "equal to 2.3.0 or greater than 2.3.0, but less than 2.4.0".
You can pronounce it as "approximately greater than".
§ Pessimistic version constraint
it means bring any lower version equal or greater than, but not a major version.
So for example arel (~> 2.0.2), will use (if availble) versions
- 2.0.2
- 2.0.3
- 2.0.? (as long as ? is >= 2)
but it won't use 2.1.?