Loops EECS2030 B: Advanced Object Oriented Programming Fall 2019 CHEN-WEI WANG Learning Outcomes Understand about Loops : ● Motivation: Repetition of similar actions ● Two common loops: for and while ● Primitive vs. Compound Statements ● Nesting loops within if statements ● Nesting if statements within loops ● Common Errors and Pitfalls 2 of 70 […]
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Syntax of Eiffel: a Brief Overview EECS3311 A: Software Design Winter 2020 CHEN-WEI WANG Escape Sequences Escape sequences are special characters to be placed in your program text. ○ In Java, an escape sequence starts with a backward slash \ e.g., \n for a new line character. ○ In Eiffel, an escape sequence starts with
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Classes and Objects EECS1022: Programming for Mobile Computing Winter 2018 CHEN-WEI WANG Object Orientation: Observe, Model, and Execute ○ Study this tutorial video that walks you through the idea of . Real World: Entities Entities: jim, jonathan, … Entities: p1(2, 3), p2(-1, -2), … Compile-Time: Classes (definitions of templates) Run-Time: Objects (instantiations of templates) class
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Program Correctness OOSC2 Chapter 11 EECS3311 A: Software Design Fall 2019 CHEN-WEI WANG Weak vs. Strong Assertions ● Describe each assertion as a set of satisfying value. x >3hassatisfyingvalues{x ∣x >3}={4,5,6,7,…} x >4hassatisfyingvalues{x ∣x >4}={5,6,7,…} ● An assertion p is stronger than an assertion q p’s set of satisfying values is a subset of q’s
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Elementary Programming EECS1021: Object Oriented Programming: from Sensors to Actuators Winter 2019 CHEN-WEI WANG Entry Point of Execution: the “main” Method For now, all your programming exercises will be defined within the body of the main method. The main method is treated by Java as the starting point of executing your program. Sequential Execution: The
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ADTs, Arrays, and Linked-Lists EECS2030: Advanced Object Oriented Programming Fall 2017 CHEN-WEI WANG Abstract Data Type (ADT) “abstract” ⇒ implementation details are not specified ! Abstract Data Types (ADTs) Abstract Data Type – entity that consists of: ●Givenaproblem,you1a)rdeatraesqtruicrteurde(tDoSfi)lteroutirrelevantdetails. ● The result is an , whose interface consists of a list of (unimplemented) operations. 2) set
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Administrative Issues EECS2030: Advanced Object Oriented Programming Fall 2017 CHEN-WEI WANG Instructor • How may you call me? “Jackie” (most preferred), “Sir”, “Professor”, “Professor Wang”, “Professor Jackie”, “Hey”, “Hi”, “Hello” • Office: Lassonde Building 2043 • Office hours: 1:30pm – 3:30pm on Mondays, Tuesdays, and Thursdays. Or by appointments. • When you need advice on
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Elementary Programming EECS2030: Advanced Object Oriented Programming Fall 2018 CHEN-WEI WANG Learning Outcomes Learn ingredients of elementary programming: X data types X literal values X constants X variables X operators X expressions X input and output [numbers, characters, strings] [arithmetic, relational] Given a problem: X First, plan how you would solve it mathematically. X Then,
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Abstract Classes and Interfaces EECS2030 B: Advanced Object Oriented Programming Fall 2019 CHEN-WEI WANG Abstract Class (1) Problem: A polygon may be either a triangle or a rectangle. Given a polygon, we may either ○ Grow its shape by incrementing the size of each of its sides; ○ Compute and return its perimeter; or ○
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Scanner: Lexical Analysis Readings: EAC2 Chapter 2 EECS4302 M: Compilers and Interpreters Winter 2020 CHEN-WEI WANG Scanner in Context ○ Recall: Lexical Analysis Source Program (seq. of characters) Scanner Syntactic Analysis seq. of tokens Parser Semantic Analysis AST1 … ASTn pretty printed Target Program ○ Treats the input programas as a a sequence of characters