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Importance_1
Ruby latest stable (v2_5_5) - 0 notes - Class: Method
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This method is only available on newer versions. The first available version of the method is shown here.

>>(p1) public

Returns a proc that is the composition of this method and the given g. The returned proc takes a variable number of arguments, calls g with them then calls this method with the result.

def f(x)
  x * x
end

f = self.method(:f)
g = proc {|x| x + x }
p (f >> g).call(2) #=> 8
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