itang · August 31, 2015 09:33 · itang · Aug 31, 2015
diff --git a/tap_when.ex b/tap_when.ex
 defmodule A do
  def tap_when(target, c, f) do
    if c do
      IO.puts "yes"
      f.(target)
    else
      IO.puts "no"
      target
    end
  end
 end

 "hello" |> A.tap_when true, &(&1 <> ", itang") |> IO.puts
	defmodule A do
	def tap_when(target, c, f) do
	if c do
	IO.puts "yes"
	f.(target)
	else
	IO.puts "no"
	target
	end
	end
	end

	"hello" \|> A.tap_when true, &(&1 <> ", itang") \|> IO.puts