Ruby Language Monkey Patching in Ruby Safe Monkey patching with Refinements
Example
Since Ruby 2.0, Ruby allows to have safer Monkey Patching with refinements. Basically it allows to limit the Monkey Patched code to only apply when it is requested.
First we create a refinement in a module:
module RefiningString
refine String do
def reverse
"Hell riders"
end
end
end
Then we can decide where to use it:
class AClassWithoutMP
def initialize(str)
@str = str
end
def reverse
@str.reverse
end
end
class AClassWithMP
using RefiningString
def initialize(str)
@str = str
end
def reverse
str.reverse
end
end
AClassWithoutMP.new("hello".reverse # => "olle"
AClassWithMP.new("hello").reverse # "Hell riders"
