AS3 Typewriter Text Effect
I had a need to use a typewriter text effect to populate text in a textfield. This was easily solved with two lines of code using the Greensock SplitTextfield class.
import com.greensock.TweenMax;
import com.greensock.text.SplitTextField;
import com.greensock.easing.*;
var stf:SplitTextField = new SplitTextField(text_tf);
TweenMax.allFrom(stf.textFields, .01, {alpha:0}, .1);
You can still see the text fading in somewhat but I feel that it works well enough for my use.