[Newbies] Using same class names

[K. K. Subramaniam]

On Monday 01 February 2010 06:09:35 am lanas wrote:
> Hello all,
> 
>  Is there a way to have several classes with the same names and having
> their scope limited to the current selected category ?  Eg.  I'd like to
> experiment with the Abstract factory pattern and thus I would like to
> make several tests, each in a category, like:
AFAIK, classes are variables in global scope in Squeak. Try inspecting:
   #Integer
and
   Smalltalk at: #Integer

> In other words, is there a way to quickly switch from one experiment
> to the other when each of these experiments would use the same class
> names and probably many of the same method names ?
You may want to use facade class and subclass your variant classes from it. 
E.g if you have classes Factory1, Factory2 etc. with the same methods, create 
a facade superclass and invoke methods using current method. e.g.

  Factory current myownmethod

See senders and implementors of "current" method for examples.

> By the way, in the System Browser, the row of buttons labeled browse,
> senders, implementors, version, inheritance and such has
> somehow disappeared.  Any new System Browser does not have that row of
> buttons anymore.  Is there a way to bring them back short of reverting
> to the original image.  This is Squeak 3.10.2.
See optionalButtons in Preferences.

HTH .. Subbu