teapot outline

the system to restart, even if the system crashes user data will not be lost or broken loop, but it may occupy more data storage space, the tradeoff is determined by the user. System software error It is easy to see in the error log that we have an error number and the appropriate processing method for the error that may occur, provided as a manual. According to the system's prompt information, the user can set up the system operation log to record the system error information which can be pred

DataFirst, the collectionSecond, linear structure (emphasis)There is a one-to-one relationship between elements and elementsStorage mode:Sequential storage (sequential table)Chained storage (linked list: single-linked list, one-way loop linked list, double-linked list, two-way circular link list, kernel linked list)A special linear structureStackInsert Delete is allowed only on the same side of the table, insert is called into the stack, delete is called the stack, allowing one end of the operat

and out of HDFS using the Hadoop File System (FS) commands Transform, Stage, StoreConvert a set of data values in a given format Storedin HDFS into new data values and/or a new data format and write them Into HDFS. This includes writing Spark applications in both Scala and Python: Load data from HDFs and store results back to HDFs using Spark Join disparate datasets together using Spark Calculate aggregate statistics (e.g., average or sum) using Spark Filter

VAR Universal variable:var a = value/constructor instantiation;Given what type of data it is, it automatically becomes the appropriate type and does not require a type conversion.Class Library:1. A. cs source code file, sent over,Add in your own project, reference namespaces, invoke methods;Generally used within the company, because the source code files can be seen, and can be modified;2. Class Library Mode:A class library, is the end of a DLL file, is the source code after the compilation of a

protocol and how Web server worksC. Know CSS display, float, z-index, BFCD. Understanding the browser Rendering page principleE. Template engine Be interested in new technologyA. Front-end code modularization and construction, gulp, webpack, etc.B. NodeJSC. MVVMD. React, Vue, backbone, angular casually talk about A certain engineering abilityA. Know the door back language, at least know what the back-end students are sayingB. Learn some web security knowledgeC. Performance optimizationD

Technology DisassemblyLayered testing IdeasTechnical debtDefinition of technical debtThe impact of technical debt on development operation and maintenanceThe way of technical debt reductionCode Quality ManagementManual code review and Automated code reviewType checkCode style CheckProgram UnderstandingCode Defect LookupCode Security ReviewCode Quality MetricsCode Review Tools (CheckStyle, PMD, FindBugs)Code review AIDS (Jupiter, Codecollaborator, understand, JDepend)Unit TestTraditional unit Te

The following are personal understanding, non-authoritative certification, please correct me!An overviewProject motivation, original needsProject objectivesFor the customer crowdFeasibility analysis (opportunities and benefits)Two functional structuresWhat features to implementTechnical solution selection (b/S, c/s, architecture level, mobile-compatible, development framework)Three core processesCore flowchartFour-page structureProduct prototype definition (provide art front-end refinement requi

1. Introduction1 What is data compression?Data compression reduces the amount of data sent or stored by partially eliminating the inherent redundancy in the data.Data compression improves the efficiency of data transfer and storage, while protecting the integrity of the database.2 Data compression methodThe data compression method is divided into lossless compression and lossy compression.Lossless compression is suitable for text or programs. lossy compression is suitable for images, video, and

LayerSolve the problem of Ethernet broadcast, establish host-to-host communication. IP protocol: Locate the receiver's sub-network through the network address, the IP sub-network part and the host part, the network part determines the sub-network, the subnet mask and the IP do and operation can determine the different IP in a sub-network, the IP packet sub-header and the data part, the total length of not more than 65535 bytes, The data portion of the Ethernet packet is transferred, the IP addr

Primary content:KVM Fundamentals (reprint)How to deploy a KVM hostQuickly create the first virtual machineNic Bridging, NAT configurationHow NAT develops an IP addressNat Initial Network firewall configuration, how to port mappingVirsh Command IntroductionSupport for Virsh consoleVirt-install and Qemu-img Command detailedHow to add a network card and diskIntermediate Stage:Understanding of XML File formatsDynamically adjust memory and CPUIntroduction to KVM CloningKVM Snapshot Introduction Learn

sign in The hotel lobby, free campers Nanchang VR brochure 09:00-12:00 Visit the VR industry base of Red Valley Beach Visit the VR industry base of Red Valley Beach, visit Nanchang famous tourist spot Tengwang Pavilion 12:00-13:00 lunch Lunch, taste Nanchang Specialties 13:00-13:30 sign in Nanchang Red Valley Beach flavored rice dumpling maker Coffee 13:30-14:00 Closin

This book is currently being written, and the outline may be adjusted at any time. Thank you for your valuable comments! Welcome to the umlonline website to learn the online version of the "active UML-advanced demand analysis" course: Http://www.umlonline.org/school/forum-26-1.html --------------------------- Contents Chapter 1 UML 1.1 Basic UML knowledge literacy what is the purpose of UML? UML classification 1.2 Structure-based UML

[Project name] Assemble test plan [V1.0 (Version)] Prepared ______________________Reviewer ______________________Approved ______________________ [Year, month, and day] Assemble test plan1. Introduction1.1 Writing PurposeDescribe the purpose of writing this test plan and point out the intended readers.1.2 BackgroundA. Name of the system to be developed;B. List the task initiators, developers, and users of this project.1.3 DefinitionLists the definitions of specialized terms used in this document

Outline of knowledge required by the System Architect . General concepts of software architecture. the role of the software architect and the most difficult problems to solve. the core principles of the system architecture. the features, levels, and categories of system architecture design. conception, rhythm, prediction, and verification of system architecture design. collaboration and simplification of System Architecture Design. the main theories,

③ Improve I/O access④ Directly managed by OSDifference between buffer and Cache Disk scheduling...... Friendly tip: the operating system reference books listed in the new prospectus are commonly referred to as dinosaur books, and there is also a William Stallings reference, if the time is not enough, you can refer to the Chinese version of this book (published by the Electronics Industry Publishing House in the fourth version). It seems that there is no Chinese version on the market. In fact, it

Jack -- learn the IOS outline in 10 days; Be sure to zoom in the picture! Release + qus29 + release/release + 6O6LmFwcL/release + udzA7b3nw + bT67 + release + jrLvy1d/Qoczh0NG/ release/release/svd28/L/J0tS/release/qreiu/release + release/ao6y9 + NDQv + release/sy9nP1Mq + release/zXwMPmu/release/LV39fUtq/ s/Second/Cw + second + tcTAqdW5w/second + second/second + zL2cvRy/ejrM/second + 38Dvw + second/tfejrGNwdaOsz9 + second/s9e0rrXIxuTL/second + 7 + qt6K

/g) String. Split (/REG /)7. Application scenarios 1. Path for collecting images: (the idea of js php is the same) VaR STR = 'capture all the source code of the page to fffdsfsd fsdfsd fsdf ';VaR arr = Str. Match (/] +?> /G) | []; // capture all image tags firstArr. foreach (function (VAL) {// traverses all the results. Here Val gets the tag STR for each image.VaR STR = Val. Match (/src = ['"]? (. + ?) ['"]? /) | ['',''];Alert (STR [1]); }); 2. Password Complexity VaR pass = 'fsdfsdf ';VaR ar

Space Three elements: method = model + strategy + Algorithm Loss function, risk function, empirical risk, and structural risk MLE and map Perceptron (class 1) Sensor model, learning strategy, Training Method 0-1 loss function Geometric interpretation of the Sensor Proof of perception Machine Pocket perceptron Linear regression and logistic regression (2 lessons) Loss function, training method, geometric interpretation, square loss function Gradient Descent Logistic regression form, derivation

program as much as possible, algorithms and other aspects to optimize the program scale. The skills of scale control are clearly explained. There are two common methods. One is to exchange space by providing the number of functional points, and the other is to exchange space by sacrificing performance and time. But how can we make a good compromise between space and time? On the one hand, it is necessary to strengthen training to improve developers' programming skills (the core may be data stru

Because of the difficulty of accepting python, instead of promoting simpler and more popular JavaScript. The main references are listed first:JavaScript authoritative Guide (6th edition): http://book.douban.com/subject/10549733/JavaScript Advanced Programming: http://book.douban.com/subject/10546125/JavaScript language essence: http://book.douban.com/subject/3590768/High-performance JavaScript http://book.douban.com/subject/5362856/JavaScript mode http://book.douban.com/subject/11506062/Write ja