Increase proc compatibility (ampersand and triple-equal)

[rewritten]

This will allow constructs like

data.then(&MyService).tap(&MySideEffects)

and

case data
when MyValidator.new(**some_config), MyOtherValidator
  :ok
when MyValidator
  :so_and_so
else
  :nope
end

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[rewritten]

Maybe overriding the class method :=== is too invasive, as this would break:

case my_service_instance
when MyServiceClass
  :something
when MyOtherServiceClass
  :something_else
else
  nil
end

Although, I don't see why one would branch on a service instance type...

[rewritten]

Procs also respond to square-brackets:

my_proc = ->(str) { str.upcase }
my_proc['asdf']
# => "ASDF"

but I know no one that uses it.

[rewritten]

Hold your horses, this will not work with inheritance (alias is scoped to the definition scope)

[iovis]

Hey man, thanks again for the proposal!

Unfortunately I’m currently sick so it might take me a few days to come back to you, sorry about that!

[Papipo]

I like the proc thingy, not so sure about the triple equals, but still, I think that it would be better to implement those in separate PRs.

[iovis]

Hey man, thanks again for the proposal!

Unfortunately I’m currently sick so it might take me a few days to come back to you, sorry about that!

Haven't forgotten about these, I'm very sorry for the wait. I finally recovered this week but I have some stuff that has piled on because of that downtime and has kept me from taking a look at these. I want to take a good look at all of these!

Also, hi @Papipo! 👋

[Papipo]

Hi @iovis 👋 . Maybe you got sick because you had to go to the office?

[iovis]

No office for us for a while haha