Created
April 23, 2016 19:39
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| defmodule Math do | |
| def zero?(0) do | |
| true | |
| end | |
| def zero?(x) when is_integer(x) do | |
| false | |
| end | |
| end | |
| IO.puts Math.zero?(0) #=> true | |
| IO.puts Math.zero?(1) #=> false | |
| IO.puts Math.zero?([1, 2, 3]) #=> ** (FunctionClauseError) | |
| IO.puts Math.zero?(0.0) #=> ** (FunctionClauseError) |
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