Ruby Monkey Patch Super

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

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Prepend And Super For Elegant Monkey Patching By Sebastian Royer Medium

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Interface to patch package is slightly different see previous item for the cause.

Ruby monkey patch super.

Monkey patching is a powerful feature of ruby however it affects globally in a program. Until ruby 2 0 there was no way to add code below a class only above it. Deprecation warnings and other warnings in ruby have a category deprecated etc but those categories aren t exposed or accessible. Watch as he helps ruby and friends.

Ruby inheritance doesn t work that way. Ruby s open classes are powerful but can easily be misused. 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. All users of the monkey patched class see the same changes.

Due to ruby s open classes you can redefine or add functionality to existing classes. The knowledge gained from this adventure was totally worth it. Unfortunately the scope of such changes is global. What changed in ruby 2 0.

You can monkey patch module kernel to get methods available in main. To check out the full results please visit my github profile. In the most recent ruby 2 7 upgrade at github we monkey patched warning warn to be able to turn warnings into exceptions. This module is based on the wonderful monkey patch by paul driver.

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 can cause unintended side effects or breakage of programs. Subscribe to treehouse direct for new clips episodes and more. This module adds the ability to add replace delete subroutines instead of just wrapping them.

This is called a monkey patch. Max spends plenty of time in his super hero outfit.

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