Ruby Monkey Patch Super

Max spends plenty of time in his super hero outfit.

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 s open classes are powerful but can easily be misused. What changed in ruby 2 0. Watch as he helps ruby and friends.

All users of the monkey patched class see the same changes. 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. The knowledge gained from this adventure was totally worth it. You can monkey patch module kernel to get methods available in main.

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

Due to ruby s open classes you can redefine or add functionality to existing classes. Until ruby 2 0 there was no way to add code below a class only above it. This module adds the ability to add replace delete subroutines instead of just wrapping them. To check out the full results please visit my github profile.

Subscribe to treehouse direct for new clips episodes and more. Monkey patching is a powerful feature of ruby however it affects globally in a program. 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. This module is based on the wonderful monkey patch by paul driver.

Interface to patch package is slightly different see previous item for the cause. This can cause unintended side effects or breakage of programs.