JavaScript Frameworks Outline • Node.js • Angular 2© Marco Papa 2017-2021 Node.js 1. Node.js is a JavaScript runtime built on Chrome’s V8 JavaScript engine. 2. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. 3. Node.js allows the creation of Web servers and networking tools using JavaScript and a collection of […]
Mobile Design – iOS 1© 2017-2021 Marco Papa, Chenglong Hao, Zezhen Xu Outline • iOS Overview • Swift Language • Xcode Basics • XCode • Design Strategy: Model-View-Controller (MVC) • Multiple Views & View Controllers • CocoaPods: Use External Dependencies • Package Manager: new experience, alternative to CocoaPods • References © 2017-2021 Marco Papa, Chenglong
High Performance Web Sites Much of the material derives from Steve Souders (SpeedCurve) and Tenni Theurer (Visa), 2006 research at Yahoo! 1(C) 2009 – 2021 Ellis Horowitz and Marco Papa The Importance of Front-End Performance The graph shows the time taken to download an html file and various associated image files, JavaScript files, and CSS
CS 111 Operating Systems Principles Final Exam Started: Jun 9 at 8:59pm Quiz Instructions Answer all questions. All questions are equally weighted. Some questions are multiple choice, with one correct answer. Some questions are matching questions – you must provide a matching answer for each part of the question. Some questions may require you to
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15-213 Introduction to Computer Systems Final Exam May 10, 2007 Name: Model Solution ID: fp Recitation Section: Copyright By PowCoder代写 加微信 powcoder • This is an open-book exam. • Notes and calculators are permitted, but not computers. • Write your answer legibly in the space provided. • You have 180 minutes for this exam. Floating
OPTIMISING MEMORY STRUCTURES II What can go wrong • Poor cache/page use Copyright By PowCoder代写 加微信 powcoder • Lack of spatial locality • Lack of temporal locality • cache thrashing • Unnecessary memory accesses • pointer chasing • array temporaries • Aliasing problems • Use of pointers can inhibit code optimisation Reducing memory accesses •
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VECTORISATION III Vectorisation • Same operation on multiple data items Copyright By PowCoder代写 加微信 powcoder • Wide registers • SIMD needed to approach FLOP peak performance, but your code must be capable of vectorisation for(i=0;i
Midterm Review Evaluating a Language Reliability How well does it perform to specification? Readability How easily can the language be read and understood? Writability How easily can someone write in the language Reusability How easily can code be reused and shared? Efficiency How fast is the code and the compiler? Simplicity/orthogonality ∙ ∙ ∙ ∙
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Unix Unix Operating Systems Operating Systems The operating system works as the primary interface between a human and their computer This has taken various forms over the years, but there are several primary duties: Oversee operations of a computer and its devices Drivers work as an interface between the hardware and software Store and retrieve
Unix Unix Editors, Scripting, Etc. Linux/Unix Editors There are several command line programs we can use in Linux The ones we will focus on this term are: Text Editors: VI Emacs Compilers gcc g++ Debugger gdb Options VI and VIM vim is an offshoot and more advanced version of vi general.asu.edu is set up that
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