crisward/mess.cr

Created December 10, 2016 21:47

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crystal passing class method as a callback

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mess.cr

	class Do
	def that
	x = 10
	while x > 0
	yield x
	x-=1
	end
	end
	end

	class Doer
	def dothing(that)
	that do \| num \|
	puts num
	end
	end
	end

	# I want to wrap do.that in doer

sdogruyol commented Dec 10, 2016

class Do
  def that(&block)
    x = 10
    while x > 0
      yield x
      x -= 1
    end
  end
end

class Doer
  def dothing(&that)
    Do.new.that do |num|
      puts num
    end
  end
end

Doer.new.dothing do |num|
  pp num
end

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