Suggesting an addition to std.traits for arrays and pointers

[Markus Dangl]

I think these two simple templates could be added to std.traits. Afaik
there is no way around defining templates for this:

/***
 * Get the referenced type of an array.
 * Example:
 * ---
 * import std.traits;
 * int[] foo;
 * ValueType!(foo) x;   // x is declared as int
 * ---
 */
template ValueType(T : T*)
{
    alias T ValueType;
}

/***
 * Get the referenced type of an pointer.
 * Example:
 * ---
 * import std.traits;
 * int* foo;
 * ValueType!(foo) x;   // x is declared as int
 * ---
 */
template ValueType(T : T[])
{
    alias T ValueType;
}