써니 노트 써니 노트

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• [inheritance] build a serializer

  🐍 파이썬/파이썬 연습문제 2022. 7. 29. 12:06

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• [inheritance] design an safe form the given UML

  🐍 파이썬/파이썬 연습문제 2022. 7. 29. 12:05

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• [HBase] Hbase shell command

  📚 데이터베이스/빅데이터 2022. 7. 29. 10:24

  https://learnhbase.wordpress.com/2013/03/02/hbase-shell-commands/

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• [OOP] The Four Core Principles of OOP

  🐍 파이썬/파이썬 기본 문법 2022. 7. 28. 12:10

  •Abstraction •Define a concept, unrelated to a concrete instance. •Encapsulation •Hide implementation details (Fields cannot be overridden!). •Inheritance •Extend classes to reuse code (inherit behavior), is-arelationships. •Polymorphism •Replacing functionality in specializations. Dynamic selection of methods.

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• [inheritance] 상속 with 예제

  🐍 파이썬/파이썬 기본 문법 2022. 7. 28. 12:08

  In OOP languages, classes can extend existing classes to inherit their behavior. At the same time, they can changeand extendthe behavior. *reminder : A class is an abstraction and represents a consistent combination of state(instance variables or “fields”) and operations to alter this state (“methods”). Lets start with the class represents "Animal" which has age and food state, and next_day, fee..

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• [Class] build a class that satisfies requirements (2)

  🐍 파이썬/파이썬 연습문제 2022. 7. 27. 11:53

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• [Class] build a class that satisfies requirements (1)

  🐍 파이썬/파이썬 연습문제 2022. 7. 27. 11:46

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• [class] python-specific special method

  🐍 파이썬/파이썬 기본 문법 2022. 7. 27. 11:44

  By Default, Printing An Object Is Not Helpful. Redefine __str__ method to Improve Output. Goal of havung __str__ is to create human-readable representation of an object. Why doesn’t it work in collections? Collections use __repr__ to print the contained objects ! Goal of __repr__is to create unambiguous representation of an object. By Default, Different Objects Are Not Equal Redefine __eq__ to A..

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