Protocol extensions - Object
Author: Andres Valloud.
Experts: the community at large.
Editor: Andres Valloud.
Objective: to update the ANSI spec to contain idioms which are de-facto standards across all Smalltalk implementations.
The following methods are being considered for inclusion (although the outcome for each of them is still undecided).
Object>>become:, specifying it is the two-way become: variety and that it has to exchange identityHash bits.
Object>>ifNil:, ifNotNil:, etc, and their UndefinedObject counterparts.
Object>>instVarAt: and instVarAt:put:.
Object>>performMessage: aMessage, as an addition to perform: aSelector (with a number of arguments).
Object>>mustBeBoolean, the message sent by some VMs when they expect to see a boolean (e.g.: for sending ifTrue:ifFalse:) and they do not.