min_max/2

min_max(enumerable, fun \\ fn -> raise Enum.EmptyError end)

Returns a tuple with the minimal and the maximal elements within enumerable. If multiple elements are considered maximal or minimal, the first one that was found is returned.

If fun is omitted then the function Kernel.</2 is used as comparator.

If fun is omitted and enumerable is empty then the default value for fun raises an Enum.EmptyError.

If fun is specified and it’s a 2-arity function then it’s evaluated with pairs of elements to determine their ordering.

fun must return true only if the first argument strictly precedes the second, and false otherwise (including when they’re equal).

fun may also be a module. In that case its compare/2 function is used, and the first argument is considered to precede the second only when it returns :lt.

If fun is specified and it’s 0-arity then it’s evaluated only when enumerable is empty and its result returned. The comparator for non-empty enumerables is still Kernel.</2.