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Description Top Down Operator Precedence (TDOP) parsing is a parsing technique introduced by Vaughan Pratt in a 1973 paper. The technique combines the best properties of recursive descent and operator precedence.

Description Adding new methods within subclasses works fine if the program being developed isn’t complex - simply add the methods to each of the individual subclasses. For example, if we have an Animal parent class, each of the Animal subclasses may need to implement a makeSounds() method. However, when our codebase consists of dozens of new methods to be implemented for dozens of subclasses, the code within each subclass becomes cluttered and often becomes difficult to maintain....