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#inherited is called right after the class Foo statement. I want something that'll run only after the end statement that closes the class declaration.
Here's some code to exemplify what I need:
class Class def inherited m puts "In #inherited for #{m}" end end class Foo puts "In Foo" end puts "I really wanted to have #inherited tiggered here." ### Output: # In #inherited for Foo # In Foo # I really wanted to have #inherited tiggered here. Does anything like that exist? Can it be created? Am I totally out of luck?
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Hooks make React so much better because you have simpler code that implements similar functionalities faster and more effectively. You can also implement React state and lifecycle methods without writing classes.
I understand that at the moment hooks can not accomplish everything a class can. Such as, providing hooks to lifecycle methods for getSnapshotBeforeUpdate and componentDidCatch. However, the React team has said they plan on adding this functionality soon.
Hooks allow function components to have access to state and other React features. Because of this, class components are generally no longer needed. Although Hooks generally replace class components, there are no plans to remove classes from React.
The major difference between Hooks and class-based state is that hooks are used inside of the functional component. One thing to keep in mind is that never call hooks inside of a any logic, it should always be on the top level! useState() is a hook that allows you to play with state in functional components in react.
I am late, but I think I have an answer (to anyone who visit here).
You can trace until you find the end of the class definition. I did it in a method which I called after_inherited:
class Class def after_inherited child = nil, &blk line_class = nil set_trace_func(lambda do |event, file, line, id, binding, classname| unless line_class # save the line of the inherited class entry line_class = line if event == 'class' else # check the end of inherited class if line == line_class && event == 'end' # if so, turn off the trace and call the block set_trace_func nil blk.call child end end end) end end # testing... class A def self.inherited(child) after_inherited do puts "XXX" end end end class B < A puts "YYY" # .... code here can include class << self, etc. end Output:
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