• Corpus ID: 31422378

A Little Smalltalk

@inproceedings{Budd1987ALS,
  title={A Little Smalltalk},
  author={Timothy A. Budd},
  year={1987}
}
Superclasses We did not discuss the classes Collection, KeyedCollection, SequenceableCollection, or ArrayedCollection in the last section, even though they were listed as forms of "collection" in the beginning of this chapter. These classes, along with such classes as Boolean, Magnitude, or Number, are what are known as abstract superclasses. Instances of abstract superclasses are seldom useful by themselves, but the classes are important in providing methods that can be inherited by subclasses… 

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