timriley (owner)

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Ruby #
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require 'pp'
 
class Object
  def tap
    yield self
    self
  end
  def tapp
    pp self
    self
  end
end
 
a = [nil, :apple, [:others]].flatten.tapp.compact.tapp
#> [nil, :apple, :others]
#> [:apple, :others]
 
a.tapp
#> [:apple, :others]