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CSC207H1 (40)


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Computer Science
Diane Horton

DECEMBER 03  Learning a new language o How Java handles name look-up, abstract classes and interfaces, exceptions, etc. o But bigger differences vs Python, e.g;  everything has a type (variables & methods, not just objects)  primitive vs object  completely object-oriented (no functions, all code in a class)  And an overall philosophy oriented towards safety. o And a new language construct: reflection. o You also did more of the learning yourself than before. o You’ll see more languages with new constructs & approaches:  csc324: programming languages  csc343: introduction to databases  csc309: programming the web o Value: knowing which tool to apply in a given situation o Value: deeper appreciation of a language’s design and how best to use it o Value: if a language doesn’t have a feature, perhaps you can implement it. E.g., support for the observer pattern.  Safety o Much of how Java does things (types, casting, etc.) was intended to make programs safer. o Safety was a key philosophy behind the design of Java. o Safety came up again when we looked at floating point. o Much more on floating point in csc336: numerical methods.  Design Patterns o These are far more general than Java or any other language. o And far more general than any one problem. o You’ll see many more design patterns in csc301: introduction to software engineering. o The algorithmic analog to design patterns is algorithmic design techniques, like divide and conquer, and greedy algorithms. o You’ll learn that in csc373: algorithm design, analysis, and complexity. o These algorithmic design techniques are just as important.  Regular expressions o These have many practical applications:  Parsing input in a Java program (or another language).  Many Unix commands, such as grep, use regular expressions.  Regular expressions and related concepts are important in language design and compilers  csc488:compilers and interpreters o At the same time, there is rigorous and beautiful theory behind regular expressions.  You ca
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