Comments by ring_0 (Top 2 by date)

please choose your variable name wisely,
you wrote,
public static void ForEach<t>(this IEnumerable<t> @enum, Action<t> mapFunction)
but my concern is with the variable mapFunction which is a type of delegate Action<t>, actually mapfunction means a function that takes one type and transform to another type.
For Example,
Select operator is map function. Which is defined like Func<tsource,treturn>