var myArray:Array of uint = new Array(uint);

The “of” operator would place a restriction on the definition of myArray to only accept values of uint. This syntax could allow compile-time error handling, as well as code hinting–maybe even some performance gains.

Adding the class reference in the new() call may or may not be necessary–but it would constructs an array that complies to the type restriction.

The same concepts could be applied to Dictionaries.