Ruby Monkey Patch Super

This article looks at how to minimize the risk of opening classes alternatives and how other languages provide similar capabilities.

Ruby monkey patch super.

Due to ruby s open classes you can redefine or add functionality to existing classes. Therefore a monkey patch might break code which doesn t expect the extended behavior and multiple monkey patches for the same class might cause conflicts to solve these problems refinements provide a way to extend classes locally. Interface to patch package is slightly different see previous item for the cause. Deprecation warnings and other warnings in ruby have a category deprecated etc but those categories aren t exposed or accessible.

This module is based on the wonderful monkey patch by paul driver. The knowledge gained from this adventure was totally worth it. Although i did not create a library i would expect people to use i learned a lot about how ruby works and had a great time solving the problem. All users of the monkey patched class see the same changes.

Max spends plenty of time in his super hero outfit. You can monkey patch module kernel to get methods available in main. Grandma s berry patch backshall ruby wants to pick lots of berries from grandma s berry patch so grandma can make her surprise berry recipe. This module adds the ability to add replace delete subroutines instead of just wrapping them.

This is called a monkey patch. Unfortunately the scope of such changes is global. In the most recent ruby 2 7 upgrade at github we monkey patched warning warn to be able to turn warnings into exceptions. Ruby inheritance doesn t work that way.

Watch as he helps ruby and friends. To check out the full results please visit my github profile. What changed in ruby 2 0. But with prepend you can override a method in a class with a method from a module and still access the class s implementation with super.

Until ruby 2 0 there was no way to add code below a class only above it. Ruby s open classes are powerful but can easily be misused.