CheckingTable设计模式

如何基于业务需求驱动理念来开展我们的模式创新，成为了当今架构师、设计师的重要职责之一。本文通过具体的 CheckingTable设计模式案例创新过程，阐述在核心业务需求分析中如何开展建模、设计并实现最合理并富弹性的设计模式，在设计模式创新方面展开思考和探索。GOF基于经验总结并发明了很多设计模式，客观的说，都非常经典，具有重大的理论指导和实战运用价值。然而这些设计模式远远不能穷尽我们的业务需求，自然也不可能完全支撑我们的业务发展；另一方面，削足适履般生搬硬套设计模式，往往使项目在代码维护、需求变更方面耗费更大的精力和成本。以本人多年

《设计模式:可复用面向对象软件的基础》中英文双语版

本资源分别含有《设计模式:可复用面向对象软件的基础》中英文版本。读者可以下载后进行对照越多。两个都是 PDF 格式的，英文版带有 PDF 书签，大小 4.1 MB，中文版按章节独立成册，大小 10.3 MB。 《设计模式:可复用面向对象软件的基础》，英文名《Design Patterns:Elements of Reusable Object-Oriented software》，是公认的设计模式的泰山北斗。作者（美）Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides，翻译：李英军 马晓星 蔡敏 刘建中。 英文版《Design Patterns:Elements of Reusable Object-Oriented software》内容简介： 　　 Capturing a wealth of experience about the design of object-oriented software, four top-notch designers present a catalog of simple and succinct solutions to commonly occur ring design problems. Previously undocumented, these 23 patterns allow designers to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions themselves. 　　 The authors begin by describing what patterns are and how they can help you design object-oriented software. They then go on to systematically name, explain, evaluate, and catalog recurring designs in object-oriented systems. With Design Patterns: Elements of Reusable Object-Oriented Software as your guide, you will learn how these important patterns fit into the software development process, and how you can leverage them to solve your own design problems most efficiently. 　　 Each pattern describes the circumstances in which it is applicable, when it can be applied in view of other design constraints, and the consequences and trade-offs of using the pattern within a larger design. AII patterns are compiled from real systems and are based on real-world examples. Each pattern also includes code that demonstrates how it may be implemented in object-oriented programming languages like C++ or Smalltalk. 英文版《Design Patterns:Elements of Reusable Object-Oriented software》目录： preface foreword guide to readers 1 introduction 1.1 what is a design pattern? 1.2 design patterns in smalltalk mvc 1.3 describing design patterns l.4 the catalog of design patterns 1.5 organizing the catalog 1.6 how design patterns

ATM_Java_源代码（OOA、OOD设计模式）

面有两个帐号： 帐号：1 PIN：42 帐号：2 PIN：1234 原文是如下： To run the simulation above, you need to do the following: 1.Click on the "ON" button (lower right-hand corner) to turn the ATM on. 2.Enter the number of $20 bills you want to have be in the cash dispenser at the start of the simulation when you are prompted to do so, and press RETURN 3.Perform any number of sessions, as follows: 1.Click on the "Click to insert card" button to simulate inserting a card 2.Type in the card number when you are prompted to do so (see below), and press RETURN 3.Enter the PIN associated with the card (see below). Although you can use your regular keyboard, it's more fun to click on the keys on the simulated ATM keyboard as displayed. 4.Perform any number of transactions, using your mouse to click the keys on the simulated ATM keyboard. Note that the machine will simulate ejecting your card when you indicate you do not wish to perform any more transactions (unless, of course, your card is retained due to too many invalid PINs). 4.Turn off the ATM by clicking on the "OFF" button (same position as the "ON" button". Note that you cannot turn the ATM off while in the middle of a customer session. 5.The entire simulation may be repeated as many times as you want, by turning the machine ON again. For demonstration purposes, this program uses a very simple simulation of the bank, with hardwired card numbers and PIN's, etc. The following are the available cards: Card Number PIN Available accounts 1 42 Checking account #1, Savings account #2 2 1234 Checking account #1, Money market account #3 (Note that both cards link to the same checking account) All the features of the bank work - both current and available balances (initially the same) are maintained for each account and a $300 daily withdrawal limit per card is enforced.

hash table spell checking

Spellchecking Prerequisites, Goals, and Outcomes Prerequisites: Students should have mastered the following prerequisite skills. • Hash Tables - Understanding of the concept of a recursive function • Inheritance - Enhancing an existing data structure through specialization Goals: This assignment is designed to reinforce the student's understanding of the use of hash tables as searchable containers. Outcomes: Students successfully completing this assignment would master the following outcomes. • Familiarize how to use hash tables, specifically hash sets Background Any word processing application will typically contain a spell check feature. Not only does this feature point out potentially misspelled words; it also suggests possible corrections. Description The program to be completed for this assessment is a spell checker. Below is a screen shot of the program in execution? The program begins by opening a word list text file, specified by a command line parameter. The program outputs an error message and terminates if it cannot open the specified word list text file. A sample word list text file (wordlist.txt) is given in the supplied wordlist.zip archive. After successfully opening the specified word list text file, the program then stores each word into a hash table. The program then opens a file to spell check. This user specifies this file through the command line. After opening this file, the program then compares each word in the file against the words stored in the hash table. The program considers a word to be misspelled if the word does not exist in the hash table. When this occurs, the program displays the line number the word appeared in, the word, and a list of possible corrections. The list of possible corrections for a misspelled word is generated using a simple algorithm. Any variation of a misspelled word that is itself a word (i.e. it is found in the word list file) is a possible correction. Your solution to this assessment should consider the following variations of a misspelled word. • Transposing of adjacent letters For the misspelled word "acr", transposing adjacent letters yields the possible corrections of "car" and "arc". • Removal of each letter For example, removing each letter from the misspelled word "boaot" yields only the possible correction of "boat". Removing letters other than the second "o" does not generate a correctly spelled word. • Replacement of each letter For each character in a misspelled word, the program should check if the replacement with any letter generates a correctly spelled word. For the misspelled word "acr", replacing the "c" with an "i" yields "air", replacing the "r" with an "e" yields "ace", and so on. • Inserting any letter at any position in a word The program should consider if inserting any letter at any position in a misspelled word generates a correctly spelled word. For the misspelled word "acr", inserting an "e" after the "r" yields "acre". Files Following is a list of files needed to complete this assessment. • handout-files.zip contains all of the following necessary files: o main.cpp - This file contains the main routine. o hashset.h - This declares a hash set class. o hashset.cpp - This defines a hash set class. o dictionary.h - This file contains the partial definition of class Dictionary. Class Dictionary inherits from class HashSet. o wordlist.zip - This file is an archive that contains a word list text file. o test.txt - This is a sample text file that contains spelling errors. Tasks To complete this assessment, you need to complete the implementation of class Dictionary and complete the spell checking program contained in main.cpp. Following is an ordered list of steps that serves as a guide to completing this assessment. Work and test incrementally. Save often. 1. Begin by completing the definition of class HashSet. Class HashSet provide three functions to handle the hashset, search, insert, remove, which accept a single reference of key_type as a parameter.  Search function: This function searches the key specified as the parameter in the hash table. If exist, return true, else return false. Note to use the eq which is a member of HashSet to compare two keys.  Insert function: This function insert the key specified as the parameter to the hash set. Note to define the strategy of conflict and considerate the size of the hash set.  Remove function: This function removes the key specified as the parameter from the hash set. Tips: refer to your textbook for the removing strategy. 2. Next, complete the definition of class Dictionary. Class Dictionary must provide a constructor that accepts a single string as a parameter. This parameter is the file name of the word list text file. This constructor must place all the words contained in the text file into the dictionary. Remember, class Dictionary is a type of HashSet, so use the inherited methods accordingly. 3. Next, complete the hash function encapsulated in class hash_function in dictionary.h. 4. Then, finish the implementation of function check_spelling. This function already contains code that reads a file line by line. It also extracts each word from a line using an instance of class stringstream. Your task is to check the spelling of each word. Use the inherited search function of class Dictionary to determine if a word exists in the dictionary. If the word exists in the dictionary, assume that it is spelled correctly. It if does not exist, assume it is misspelled. For each misspelled word, generate and display a list of possible corrections. (the generation of correction is given in the function create_suggestions, you can invoke this function) Note: the stl vector is used in this assignment, if you have any difficulties, you can refer to the documents given in this folder. Submission Submit only the following. 1. hashset.cpp – your completed class HashSet definiction 2. dictionary.h - your completed class Dictionary definition 3. dictionary.cpp - if created 4. main.cpp - your completed spell checker program

Model Checking 模式检测（英文版）

本人在国外的必修课课件，非常详尽的讲述了模式检测的原理和数学基础，是可计算性与复杂度分析的重要组成部分。

LTL – model checking

model checking 的ppt，应该有帮助的

Principles of Model Checking　模式检查

mit的新书，模式检查方向的好教材．做verification的人一般都需要吧，国外网站上很好找，不愿意给资源分可以用google下载很好找的．

Principles of Model Checking

Principles of Model Checking

模型检测 Model Checking

模型检测 Model Checking

principles of model checking

对model checking基础理论的讲解，算是关于model checking的书籍中经典的著作

Software Model Checking

Tutorial: Abstract. We survey principles of model checking techniques for the automatic analysis of reactive systems. The use of model checking is exemplified by an analysis of the Needham-Schroeder public key protocol. We then formally define transition systems, temporal logic, !-automata, and their relationship. Basic model checking algorithms for linear- and branching-time temporal logics are defined, followed by an introduction to symbolic model checking and partial-order reduction techniques. The paper ends with a list of references to some more advanced topics.

Principle of Model Checking

这个版本我自己增加了了各个章节的书签，方便阅读的时候查找和对书有一个大概的了解

Handbook of Model Checking

Model checking is a computer-assisted method for the analysis of dynamical systems that can be modeled by state-transition systems. Drawing from research traditions in mathematical logic, programming languages, hardware design, and theoretical computer science, model checking is now widely used for the verification of hardware and software in industry. This chapter is an introduction and short survey of model checking. The chapter aims to motivate and link the individual chapters of the handbook, and to provide context for readers who are not familiar with model checking.

Principles of Model Checking（Model Checking经典书籍）

Model Checking经典书籍,如果做形式化验证的话属于必读系列

manual for Probabilistic model checking prism

manual for Probabilistic model checking prism 很好的入门书哦

CTL Model Checking

CTL Model Checking Lecture #24 of Model Checking