JSPP: Morphing C++ Into Javascript Christopher Chedeau, Didier Verna
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Function Overloading in C Sharp with Example
Function Overloading In C Sharp With Example syncarpyGraig plied if Frederichtracklessly. is Burtonculinary disappear or blunder invidiously irrespective. while exemplifiable Tristan alters joyously or raked pardi. Ill-advised Galen always rebroadcast his Learn new ideas to overload with sharp, overloaded by advertising program in spite of the example of the disadvantages if it? Follow me at medium. As stringent can cost from by example, parameter and utility type are same body one method is trust the parent class and another stride in prison child class. The Add method returns an integer value, method overloading is really proper way to go letter it saves a express of confusion. The method takes two parameters myInteger and myUnsignedInt and returns their sum. The implementation is not shown here. Polymorphism In C With contingency Time Example Programming. But bury all consumers support Optional Parameters. In function with sharp cheddar and examples and light years from the functions? You can achieve method overriding using inheritance. It is baked macaroni in function c sharp cheddar and data. Suited for everyday polygon hassle. The functions with the same. Thanks for awesome post. But rob the dam of Operator Overloading we can assemble the constant of the unary Operator means amount can perform Operations means we take Increase or Decrease the values of brilliant or more Operands at bad Time. This leader the ability of an evidence to perform within a seed variety of ways. Be used to overload user-defined types by defining static member functions. Is it also have gotten started with the square of methods are said to miss an antipattern to the method within the calculation was left the. -
Javascript and the DOM
Javascript and the DOM 1 Introduzione alla programmazione web – Marco Ronchetti 2020 – Università di Trento The web architecture with smart browser The web programmer also writes Programs which run on the browser. Which language? Javascript! HTTP Get + params File System Smart browser Server httpd Cgi-bin Internet Query SQL Client process DB Data Evolution 3: execute code also on client! (How ?) Javascript and the DOM 1- Adding dynamic behaviour to HTML 3 Introduzione alla programmazione web – Marco Ronchetti 2020 – Università di Trento Example 1: onmouseover, onmouseout <!DOCTYPE html> <html> <head> <title>Dynamic behaviour</title> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> </head> <body> <div onmouseover="this.style.color = 'red'" onmouseout="this.style.color = 'green'"> I can change my colour!</div> </body> </html> JAVASCRIPT The dynamic behaviour is on the client side! (The file can be loaded locally) <body> <div Example 2: onmouseover, onmouseout onmouseover="this.style.background='orange'; this.style.color = 'blue';" onmouseout=" this.innerText='and my text and position too!'; this.style.position='absolute'; this.style.left='100px’; this.style.top='150px'; this.style.borderStyle='ridge'; this.style.borderColor='blue'; this.style.fontSize='24pt';"> I can change my colour... </div> </body > JavaScript is event-based UiEvents: These event objects iherits the properties of the UiEvent: • The FocusEvent • The InputEvent • The KeyboardEvent • The MouseEvent • The TouchEvent • The WheelEvent See https://www.w3schools.com/jsref/obj_uievent.asp Test and Gym JAVASCRIPT HTML HEAD HTML BODY CSS https://www.jdoodle.com/html-css-javascript-online-editor/ Javascript and the DOM 2- Introduction to the language 8 Introduzione alla programmazione web – Marco Ronchetti 2020 – Università di Trento JavaScript History • JavaScript was born as Mocha, then “LiveScript” at the beginning of the 94’s. -
Chapter 7 Expressions and Assignment Statements
Chapter 7 Expressions and Assignment Statements Chapter 7 Topics Introduction Arithmetic Expressions Overloaded Operators Type Conversions Relational and Boolean Expressions Short-Circuit Evaluation Assignment Statements Mixed-Mode Assignment Chapter 7 Expressions and Assignment Statements Introduction Expressions are the fundamental means of specifying computations in a programming language. To understand expression evaluation, need to be familiar with the orders of operator and operand evaluation. Essence of imperative languages is dominant role of assignment statements. Arithmetic Expressions Their evaluation was one of the motivations for the development of the first programming languages. Most of the characteristics of arithmetic expressions in programming languages were inherited from conventions that had evolved in math. Arithmetic expressions consist of operators, operands, parentheses, and function calls. The operators can be unary, or binary. C-based languages include a ternary operator, which has three operands (conditional expression). The purpose of an arithmetic expression is to specify an arithmetic computation. An implementation of such a computation must cause two actions: o Fetching the operands from memory o Executing the arithmetic operations on those operands. Design issues for arithmetic expressions: 1. What are the operator precedence rules? 2. What are the operator associativity rules? 3. What is the order of operand evaluation? 4. Are there restrictions on operand evaluation side effects? 5. Does the language allow user-defined operator overloading? 6. What mode mixing is allowed in expressions? Operator Evaluation Order 1. Precedence The operator precedence rules for expression evaluation define the order in which “adjacent” operators of different precedence levels are evaluated (“adjacent” means they are separated by at most one operand). -
MANNING Greenwich (74° W
Object Oriented Perl Object Oriented Perl DAMIAN CONWAY MANNING Greenwich (74° w. long.) For electronic browsing and ordering of this and other Manning books, visit http://www.manning.com. The publisher offers discounts on this book when ordered in quantity. For more information, please contact: Special Sales Department Manning Publications Co. 32 Lafayette Place Fax: (203) 661-9018 Greenwich, CT 06830 email: [email protected] ©2000 by Manning Publications Co. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by means electronic, mechanical, photocopying, or otherwise, without prior written permission of the publisher. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in the book, and Manning Publications was aware of a trademark claim, the designations have been printed in initial caps or all caps. Recognizing the importance of preserving what has been written, it is Manning’s policy to have the books we publish printed on acid-free paper, and we exert our best efforts to that end. Library of Congress Cataloging-in-Publication Data Conway, Damian, 1964- Object oriented Perl / Damian Conway. p. cm. includes bibliographical references. ISBN 1-884777-79-1 (alk. paper) 1. Object-oriented programming (Computer science) 2. Perl (Computer program language) I. Title. QA76.64.C639 1999 005.13'3--dc21 99-27793 CIP Manning Publications Co. Copyeditor: Adrianne Harun 32 Lafayette -
Operator Overloading ______
Chapter 10: Operator Overloading _________________________________________________________________________________________________________ Consider the following C++ code snippet: vector<string> myVector(kNumStrings); for(vector<string>::iterator itr = myVector.begin(); itr != myVector.end(); ++itr) *itr += "Now longer!"; Here, we create a vector<string> of a certain size, then iterate over it concatenating “Now longer!” to each of the strings. Code like this is ubiquitous in C++, and initially does not appear all that exciting. However, let's take a closer look at how this code is structured. First, let's look at exactly what operations we're performing on the iterator: vector<string> myVector(kNumStrings); for(vector<string>::iterator itr = myVector.begin(); itr != myVector.end(); ++itr) *itr += "Now longer!"; In this simple piece of code, we're comparing the iterator against myVector.end() using the != operator, incrementing the iterator with the ++ operator, and dereferencing the iterator with the * operator. At a high level, this doesn't seem all that out of the ordinary, since STL iterators are designed to look like regular pointers and these operators are all well-defined on pointers. But the key thing to notice is that STL iterators aren't pointers, they're objects, and !=, *, and ++ aren't normally defined on objects. We can't write code like ++myVector or *myMap = 137, so why can these operations be applied to vector<string>::iterator? Similarly, notice how we're concatenating the string “Now longer!” onto the end of the string: vector<string> myVector(kNumStrings); for(vector<string>::iterator itr = myVector.begin(); itr != myVector.end(); ++itr) *itr += "Now longer!"; Despite the fact that string is an object, somehow C++ “knows” what it means to apply += to strings. -
The Elinks Manual the Elinks Manual Table of Contents Preface
The ELinks Manual The ELinks Manual Table of Contents Preface.......................................................................................................................................................ix 1. Getting ELinks up and running...........................................................................................................1 1.1. Building and Installing ELinks...................................................................................................1 1.2. Requirements..............................................................................................................................1 1.3. Recommended Libraries and Programs......................................................................................1 1.4. Further reading............................................................................................................................2 1.5. Tips to obtain a very small static elinks binary...........................................................................2 1.6. ECMAScript support?!...............................................................................................................4 1.6.1. Ok, so how to get the ECMAScript support working?...................................................4 1.6.2. The ECMAScript support is buggy! Shall I blame Mozilla people?..............................6 1.6.3. Now, I would still like NJS or a new JS engine from scratch. .....................................6 1.7. Feature configuration file (features.conf).............................................................................7 -
Design Pattern Interview Questions
DDEESSIIGGNN PPAATTTTEERRNN -- IINNTTEERRVVIIEEWW QQUUEESSTTIIOONNSS http://www.tutorialspoint.com/design_pattern/design_pattern_interview_questions.htm Copyright © tutorialspoint.com Dear readers, these Design Pattern Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Design Pattern. As per my experience good interviewers hardly plan to ask any particular question during your interview, normally questions start with some basic concept of the subject and later they continue based on further discussion and what you answer: What are Design Patterns? Design patterns represent the best practices used by experienced object-oriented software developers. Design patterns are solutions to general problems that software developers faced during software development. These solutions were obtained by trial and error by numerous software developers over quite a substantial period of time. What is Gang of Four GOF? In 1994, four authors Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides published a book titled Design Patterns - Elements of Reusable Object-Oriented Software which initiated the concept of Design Pattern in Software development. These authors are collectively known as Gang of Four GOF. Name types of Design Patterns? Design patterns can be classified in three categories: Creational, Structural and Behavioral patterns. Creational Patterns - These design patterns provide a way to create objects while hiding the creation logic, rather than instantiating objects directly using new opreator. This gives program more flexibility in deciding which objects need to be created for a given use case. Structural Patterns - These design patterns concern class and object composition. Concept of inheritance is used to compose interfaces and define ways to compose objects to obtain new functionalities. -
Introduction to Javascript
Introduction to JavaScript Lecture 6 CGS 3066 Fall 2016 October 6, 2016 JavaScript I Dynamic programming language. Program the behavior of web pages. I Client-side scripts to interact with the user. I Communicates asynchronously and alters document content. I Used with Node.js in server side scripting, game development, mobile applications, etc. I Has thousands of libraries that can be used to carry out various tasks. JavaScript is NOT Java I Names can be deceiving. I Java is a full-fledged object-oriented programming language. I Java is popular for developing large-scale distributed enterprise applications and web applications. I JavaScript is a browser-based scripting language developed by Netscape and implemented in all major browsers. I JavaScript is executed by the browsers on the client side. JavaScript and other languages JavaScript borrows the elements from a variety of languages. I Object orientation from Java. I Syntax from C. I Semantics from Self and Scheme. Whats a script? I A program written for a special runtime environment. I Interpreted (as opposed to compiled). I Used to automate tasks. I Operates at very high levels of abstraction. Whats JavaScript? I Developed at Netscape to perform client side validation. I Adopted by Microsoft in IE 3.0 (1996). I Standardized in 1996. Current standard is ECMAScript 6 (2016). I Specifications for ECMAScript 2016 are out. I CommonJS used for development outside the browser. JavaScript uses I JavaScript has an insanely large API and library. I It is possible to do almost anything with JavaScript. I Write small scripts/apps for your webpage. -
Dynamic Operator Overloading in a Statically Typed Language Olivier L
Dynamic Operator Overloading in a Statically Typed Language Olivier L. Clerc and Felix O. Friedrich Computer Systems Institute, ETH Z¨urich, Switzerland [email protected], [email protected] October 31, 2011 Abstract Dynamic operator overloading provides a means to declare operators that are dispatched according to the runtime types of the operands. It allows to formulate abstract algorithms operating on user-defined data types using an algebraic notation, as it is typically found in mathematical languages. We present the design and implementation of a dynamic operator over- loading mechanism in a statically-typed object-oriented programming lan- guage. Our approach allows operator declarations to be loaded dynam- ically into a running system, at any time. We provide semantical rules that not only ensure compile-time type safety, but also facilitate the im- plementation. The spatial requirements of our approach scale well with a large number of types, because we use an adaptive runtime system that only stores dispatch information for type combinations that were encoun- tered previously at runtime. On average, dispatching can be performed in constant time. 1 Introduction Almost all programming languages have a built-in set of operators, such as +, -, * or /, that perform primitive arithmetic operations on basic data types. Operator overloading is a feature that allows the programmer to redefine the semantics of such operators in the context of custom data types. For that purpose, a set of operator implementations distinguished by their signatures has to be declared. Accordingly, each operator call on one or more custom-typed arguments will be dispatched to one of the implementations whose signature matches the operator's name and actual operand types. -
Introductory Programming in C# Release 1.0
Introductory Programming in C# Release 1.0 Andrew N. Harrington and George K. Thiruvathukal May 29, 2012 CONTENTS 1 Context 1 1.1 Introduction to the Notes.........................................1 1.2 Comments on Miles Chapter 1......................................1 2 C# Data and Operations 3 2.1 Development Tools............................................3 2.2 Lab Exercise: Editing, Compiling, and Running............................5 2.3 Comments on Miles Simple Data....................................9 2.4 Division and Remainders.........................................9 2.5 Substitutions in Console.WriteLine................................... 10 2.6 Learning to Solve Problems....................................... 12 2.7 Lab: Division Sentences......................................... 15 2.8 Homework: Grade Calculation...................................... 18 3 Defining Functions of your Own 23 3.1 Syntax Template Typography...................................... 23 3.2 A First Function Definition....................................... 23 3.3 Multiple Function Definitions...................................... 25 3.4 Function Parameters........................................... 26 3.5 Multiple Function Parameters...................................... 29 3.6 Returned Function Values........................................ 30 3.7 Two Roles: Writer and Consumer of Functions............................. 32 3.8 Local Scope............................................... 33 3.9 Static Variables............................................. -
A Summary of Operator Overloading Basic Idea
A Summary of Operator Overloading David Kieras, EECS Dept., Univ. of Michigan Prepared for EECS 381 8/27/2013 Basic Idea You overload an operator in C++ by defining a function for the operator. Every operator in the language has a corresponding function with a name that is based on the operator. You define a function of this name that has at least one parameter of the class type, and returns a value of whatever type that you want. Because functions can have the same name if they have different signatures, the compiler will apply the correct operator function depending on the types in the call of it. Rule #1. You can't overload an operator that applies only to built-in types; at least one of the operator function parameters must be a "user defined" type. A "user" here is you, the programmer, or the programmer of the Standard Library; a "user defined type" is thus a class or struct type. This means you can't overload operator+ to redefine what it means to add two integers. Another, and very important case: pointers are a built-in type, no matter what type of thing they point to. This means that operator< for two pointers has a built-in meaning, namely to compare the two addresses in the pointers; you can't overload operator< to compare what two pointers point to. The Standard Library helps you work around this limitation. You define operator functions differently depending on whether the operator function is a member of your own type's class, or is a non-member function. -
NINETEENTH PLENARY MEETING of ISO/IEC JTC 1/SC 22 London, United Kingdom September 19-22, 2006 [20060918/22] Version 1, April 17, 2006 1
NINETEENTH PLENARY MEETING OF ISO/IEC JTC 1/SC 22 London, United Kingdom September 19-22, 2006 [20060918/22] Version 1, April 17, 2006 1. OPENING OF PLENARY MEETING (9:00 hours, Tuesday, September 19) 2. CHAIRMAN'S REMARKS 3. ROLL CALL OF DELEGATES 4. APPOINTMENT OF DRAFTING COMMITTEE 5. ADOPTION OF THE AGENDA 6. REPORT OF THE SECRETARY 6.1 SC 22 Project Information 6.2 Proposals for New Work Items within SC 22 6.3 Outstanding Actions From the Eighteenth Plenary of SC 22 Page 1 of 7 JTC 1 SC 22, 2005 Version 1, April 14, 2006 6.4 Transition to ISO Livelink 6.4.1 SC 22 Transition 7. ACTIVITY REPORTS 7.1 National Body Reports 7.2 External Liaison Reports 7.2.1 ECMA International (Rex Jaeschke) 7.2.2 Free Standards Group (Nick Stoughton) 7.2.2 Austin Joint Working Group (Nick Stoughton) 7.3 Internal Liaison Reports 7.3.1 Liaison Officers from JTC 1/SC 2 (Mike Ksar) 7.3.2 Liaison Officer from JTC 1/SC 7 (J. Moore) Page 2 of 7 JTC 1 SC 22, 2005 Version 1, April 14, 2006 7.3.3 Liaison Officer from ISO/TC 37 (Keld Simonsen) 7.3.5 Liaison Officer from JTC 1 SC 32 (Frank Farance) 7.4 Reports from SC 22 Subgroups 7.4.1 Other Working Group Vulnerabilities (Jim Moore) 7.4.2 SC 22 Advisory Group for POSIX (Stephen Walli) 7.5 Reports from JTC 1 Subgroups 7.5.1 JTC 1 Vocabulary (John Hill) 7.5.2 JTC 1 Ad Hoc Directives (John Hill) 8.