[Newbies] Re: Two questions about Smalltalk language design

1. If a message does not return self, then you wouldn't be able to chain messages together or to cascade messages.

for example:

|s|

s := Sphere new.

s rotateLeft; rotateRight; spin 60.

would have to be:

s rotateLeft. s rotateRight. s spin 60.

2. If you add an object to a collection, most times you are still concerned with the object, not the collection. I know what you mean that a lot of times you build an object and when it is complete you store it in a collection and move onto something else. But there is no reason adding has to be the final step.

For example, I pour coffee into my cup, (Cup new) add: coffee, then I stir the coffee, (coffee stir) .

1. Why do ST methods return "self" if nothing is explicitly returned?

(he would have expected something like "Unit" in Scala, or "Void" -

2. In Collections, why does "add:" return the object being added, and

not "self"?