How to Fly

Flying is the action of being sustained above the ground without falling.

There is an art to flying, or rather a knack. The knack lies in learning how to throw yourself at the ground and miss.

The first part is easy. All it requires is simply the ability to throw yourself forward with all your weight, and the willingness not to mind that it’s going to hurt.

So far I can do the first part very well.

Callable S3/S4 Object in R

A function in R, like any other objects in R, can have additional attributes (or slots in S4), that is to say, a S3 or S4 object can inherit 'function' semantics and become callable. [Read More]