🚀 go-pugleaf

Sorry, Modula-2 isn't really suitable for generic "container" ADT's such
as List, Stack, Queue, etc. (i.e., all the stuff of computer science).
There is a way to do it, namely by using ADDRESS values, and casting the
actual parameters to type ADDRESS in calls to the ADT procedures, but
it's a crock. 

Wirth has abandoned Modula. His new language, Oberon, provides garbage
collection, and allows a limited form of structure inheritance. The
result is that you can have a List module. You can then declare an
IntegerList record type, inheriting from List. (Note that Oberon isn't
object-oriented: inheritance affects fields, not methods.) The List
procedures will work with IntegerLists with no problem.

I switched from Modula-2 to C in my data structures course last year.
Afterwards, I really felt that I had lost almost nothing. This isn't a
compliment to C, but a criticism of Modula. It really doesn't help you
very much with the tough problems. 
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