Ruby Language Monkey Patching in Ruby Monkey patching a class
Example
Monkey patching is the modification of classes or objects outside of the class itself.
Sometimes it is useful to add custom functionality.
Example: Override String Class to provide parsing to boolean
class String
def to_b
self =~ (/^(true|TRUE|True|1)$/i) ? true : false
end
end
As you can see, we add the to_b() method to the String class, so we can parse any string to a boolean value.
>>'true'.to_b
=> true
>>'foo bar'.to_b
=> false
