Case

 case {1, 2} do
  {3, 4} ->
    "This clause won't match."
  {1, x} ->
    "This clause will match and bind x to 2 in this clause."
  _ ->
    "This clause would match any value."
end

case 仅用于匹配特定数据的给定模式。这里，{1,2} 与代码示例中给出的不同的案例模式匹配。