UUCCSLDA DEPARTMENT OF COMPUTER SCIENCE CSC 118 CS123a Computer Networking, IP Addressing and Neighbor Routing In these we quickly give an overview of IP addressing and Neighbor Routing. Routing consists of: • IP addressing • IP Neighbor Routing • Route Computation • Forwarding These notes are on IP Addressing and Neighbor Routing. The next set […]
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Copying Objects Writing Complete Postconditions EECS3311 A & E: Software Design Fall 2020 CHEN-WEI WANG Part 1 Copying Objects 3 of 41 Learning Objectives Upon completing this lecture, you are expected to understand: 1. 3 Levels of Copying Objects: Reference vs. Shallow vs. Deep 2. Use of the old keyword in Postconditions 3. Writing Complete
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The Visitor Design Pattern EECS3311 M: Software Design Winter 2019 CHEN-WEI WANG Motivating Problem (1) Based on the you learned, design classes to model of arithmetic expressions (e.g., 341, 2, 341 + 2). EXPERSSION* value: INTEGER COMPOSITE* left, right: EXPRESSION composite pattern structures 2 of 13 CONSTANT+ ADDITION+ Motivating Problem (2) Extend the composite pattern
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The State Design Pattern Readings: OOSC2 Chapter 20 EECS3311 A: Software Design Winter 2020 CHEN-WEI WANG State Transition Diagram Characterize as: 1) A set of states; and 2) For each state, its list of applicable transitions (i.e., actions). e.g., Above reservation system as a : finite state machine (6) Final 1 (1) Initial 33 (5)
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Classes and Objects Readings: Chapters 3 – 4 of the Course Notes EECS2030: Advanced Object Oriented Programming Fall 2017 CHEN-WEI WANG Separation of Concerns: App vs. Model ● So far we have developed: Supplier: A single utility class. Client: A class with its main method using the utility methods. ● In Java: ○ ○ ●
Motivating Problem Whenever the display feature is called, retrieve the current values of temperature, humidity, and/or pressure via the weather data reference. 3 of 35 Implementing the First Design (1) class WEATHER_DATA create make feature — Data temperature: REAL humidity: REAL pressure: REAL feature — Queries correct_limits(t,p,h: REAL): BOOLEAN ensure Result implies -36
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Recursion EECS2030: Advanced Object Oriented Programming Fall 2017 CHEN-WEI WANG Recursion: Principle ● is useful in expressing solutions to problems that can be defined: ○ Base Cases: Small problem instances immediately solvable. ○ Recursive Cases: Large problem instances not immediately solvable. Solve by reusing solution(s) to strictly smaller problem instances. ● Similar idea learnt in
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Inheritance Readings: OOSCS2 Chapters 14 – 16 EECS3311 M: Software Design Winter 2019 CHEN-WEI WANG Aspects of Inheritance Code Reuse Substitutability X Polymorphism and Dynamic Binding X Sub-contracting [ compile-time type checks ] [ runtime behaviour checks ] 2 of 63 Why Inheritance: A Motivating Example Problem: A student management system stores data about students.
程序代写代做代考 android compiler IOS C Java Inheritance Readings: OOSCS2 Chapters 14 – 16 Read More »
Design-by-Contract (DbC) Readings: OOSC2 Chapter 11 EECS3311 A: Software Design Fall 2019 CHEN-WEI WANG Motivation: Catching Defects – When? ● To minimize development costs , minimize software defects. ● Software Development Cycle: Requirements → Design → Implementation → Release Q. Design or Implementation Phase? Catch defects as early as possible . ∵ The cost of
The Visitor Design Pattern EECS3311 A: Software Design Winter 2020 CHEN-WEI WANG Motivating Problem (1) Based on the you learned, design classes to model of arithmetic expressions (e.g., 341, 2, 341 + 2). EXPERSSION* value: INTEGER COMPOSITE* left, right: EXPRESSION composite pattern structures 2 of 13 CONSTANT+ ADDITION+ Motivating Problem (2) Extend the composite pattern
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