How to combine two procs into one?

Question

Just wondering if there's a syntax shortcut for taking two procs and joining them so that output of one is passed to the other, equivalent to:

a = ->(x) { x + 1 }
b = ->(x) { x * 10 }
c = ->(x) { b.( a.( x ) ) }

This would come in handy when working with things like method(:abc).to_proc and :xyz.to_proc

Answer 1

More sugar, not really recommended in production code

class Proc
  def *(other)
    ->(*args) { self[*other[*args]] }
  end
end

a = ->(x){x+1}
b = ->(x){x*10}
c = b*a
c.call(1) #=> 20

Answer 2

a = Proc.new { |x| x + 1 }
b = Proc.new { |x| x * 10 }
c = Proc.new { |x| b.call(a.call(x)) }