enum each code example

Example 1: enum foreach

foreach (Suit suit in (Suit[]) Enum.GetValues(typeof(Suit)))
{
}

Example 2: foreach enum

foreach (MyEnum enumValue in (MyEnum[]) Enum.GetValues(typeof(MyEnum)))
{
}

Example 3: filter elixir enum example

# filter, sum
[1.0,2.0,nil] |> Enum.filter(&(&1|>is_float))|> Enum.sum

# map
0..0 |> Enum.map(&(&1+1))