Proc#>>

(::Proc::_Callable callable) -> ::Proc

prc >> g → a_proc

static VALUE
proc_compose_to_right(VALUE self, VALUE g)
{
    return rb_proc_compose_to_right(self, to_callable(g));
}

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

Example

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

g could be other Proc, or Method, or any other object responding to call method:

Example

class Parser
  def self.call(text)
     # ...some complicated parsing logic...
  end
end

pipeline = File.method(:read) >> Parser >> proc { |data| puts "data size: #{data.count}" }
pipeline.call('data.json')