watzon · May 11, 2019 20:52
diff --git a/compile-error.cr b/compile-error.cr
 # This example will throw an error at compile time
 # allowing you to catch it sooner and fix it

 arr = [] of Int32

 def sum(arr)
  arr.reduce(0) { |acc,i| acc + i }
 end

 # Works just fine
 puts sum [1, 2, 3, 4, 5]

 # Throws a compile error
 puts sum ["1", 2, 3, 4, 5]
	# This example will throw an error at compile time
	# allowing you to catch it sooner and fix it

	arr = [] of Int32

	def sum(arr)
	arr.reduce(0) { \|acc,i\| acc + i }
	end

	# Works just fine
	puts sum [1, 2, 3, 4, 5]

	# Throws a compile error
	puts sum ["1", 2, 3, 4, 5]