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Voz da Regio A pergunta da semana Editorial Agradecer em vida a prxima terafeira, Dia do Municpio de Leiria, a Cmara vai homenagear vrias personalidades.Rvk1WOMfgE/VWkMfKyoZpI/AAAAAAAAHWY/oRR9rQrX_vc/s400/Folder.jpg' alt='Caminho Para Eternidade 2 Avi Download Mac' title='Caminho Para Eternidade 2 Avi Download Mac' /> Agile software development Wikipedia.Agile software development describes a set of values and principles for software development under which requirements and solutions evolve through the collaborative effort of self organizing cross functional teams.It advocates adaptive planning, evolutionary development, early delivery, and continuous improvement, and it encourages rapid and flexible response to change.These principles support the definition and continuing evolution of many software development methods.The term agile sometimes written Agile4 was popularized by the Manifesto for agile software development,5 which defines those values and principles.Agile software development frameworks continue to evolve,3 two of the most widely used being Scrum and Kanban.HistoryeditIterative and incremental software development methods can be traced back to 1.Evolutionary project management89 and adaptive software development1.Here is an uncategorized list of online programming books available for free download.The books cover all major programming languages Ada, Assembly, Basic, C, C.During the 1. 99.These included from 1.DSDM from 1. 99. Scrum from 1.Crystal Clear and extreme programming XP and from 1.Although these originated before the publication of the Manifesto for Agile Software Development, they are collectively referred to as agile software development methods.At the same time, similar changes were underway in manufacturing1.WxfmjcM6pq0/TTsnOz50rII/AAAAAAAAAAg/j6U5BLh2Q0U/s1600/Software+Architecture.JPG' alt='An Introduction To Software Architecture Shaw' title='An Introduction To Software Architecture Shaw' />In 2.Snowbird resort in Utah to discuss these lightweight development methods, among others Jeff Sutherland, Ken Schwaber, and Alistair Cockburn.Together they published the Manifesto for Agile Software Development.In 2. Alistair Cockburn and Jim Highsmith wrote an addendum of project management principles, the Declaration of Interdependence,1.In 2. 00. 9, a movement by Robert C Martin wrote an extension of software development principles, the Software Craftsmanship Manifesto, to guide agile software development according to professional conduct and mastery.In 2. 01. 1 the Agile Alliance created the Guide to Agile Practices renamed the Agile Glossary in 2.See the latest news and architecture related to 2017chicagoarchitecturebiennial, only on ArchDaily.The Manifesto for Agile Software DevelopmenteditBased on their combined experience of developing software and helping others do that, the seventeen signatories to the manifesto proclaimed that they value 5Individuals and Interactions more than processes and tools.Working Software more than comprehensive documentation.Customer Collaboration more than contract negotiation.Responding to Change more than following a plan.While the secondary concerns were important, the primary concerns were more critical to success.Agile software development valueseditBy these terms, they meant 1.Design-It-From-Programmer-to-Software-Architect-0.jpg' alt='An Introduction To Software Architecture Shaw' title='An Introduction To Software Architecture Shaw' />Individuals and interactionseditSelf organization and motivation are important, as are interactions like co location and pair programming.It is better to have a good team of developers who communicate and collaborate well, rather than a team of experts each operating in isolation.Communication is a fundamental concept.Working softwareeditWorking software is more useful and welcome than just presenting documents to clients in meetings.It is better to comment inline with the code and to keep external documentation light, rather than heavy documents that take a lot of effort and quickly become outdated.Customer collaborationeditRequirements cannot be fully collected at the beginning of the software development cycle, so it is better to directly involve the paying customer and their end users, or a proxy for them so that detailed requirements can be progressively elaborated and adapted based on feedback.Responding to changeeditAgile software development methods are focused on quick responses to change and continuous development.Some of the authors formed the Agile Alliance, a non profit organization that promotes software development according to the manifestos values and principles.Introducing the manifesto on behalf of the Agile Alliance, Jim Highsmith said,The Agile movement is not anti methodology, in fact many of us want to restore credibility to the word methodology.We want to restore a balance.We embrace modeling, but not in order to file some diagram in a dusty corporate repository.We embrace documentation, but not hundreds of pages of never maintained and rarely used tomes.We plan, but recognize the limits of planning in a turbulent environment.Those who would brand proponents of XP or SCRUM or any of the other Agile Methodologies as hackers are ignorant of both the methodologies and the original definition of the term hacker.Jim Highsmith, History The Agile Manifesto1.Agile software development principleseditThe Manifesto for Agile Software Development is based on twelve principles 1.Customer satisfaction by early and continuous delivery of valuable software.Welcome changing requirements, even in late development.Working software is delivered frequently weeks rather than monthsClose, daily cooperation between business people and developers.Projects are built around motivated individuals, who should be trusted.Face to face conversation is the best form of communication co locationWorking software is the primary measure of progress.Sustainable development, able to maintain a constant pace.Continuous attention to technical excellence and good design.Simplicitythe art of maximizing the amount of work not doneis essential.Best architectures, requirements, and designs emerge from self organizing teams.Regularly, the team reflects on how to become more effective, and adjusts accordingly.OvervieweditPair programming, an agile development technique used by XP.Note information radiators in the background.Iterative, incremental and evolutionaryeditMost agile development methods break product development work into small increments that minimize the amount of up front planning and design.Iterations, or sprints, are short time frames timeboxes that typically last from one to four weeks.Each iteration involves a cross functional team working in all functions planning, analysis, design, coding, unit testing, and acceptance testing.At the end of the iteration a working product is demonstrated to stakeholders.This minimizes overall risk and allows the product to adapt to changes quickly.An iteration might not add enough functionality to warrant a market release, but the goal is to have an available release with minimal bugs at the end of each iteration.Multiple iterations might be required to release a product or new features.Working software is the primary measure of progress.Efficient and face to face communicationeditNo matter which development method is followed, every team should include a customer representative Product Owner in Scrum.This person is agreed by stakeholders to act on their behalf and makes a personal commitment to being available for developers to answer questions throughout the iteration.At the end of each iteration, stakeholders and the customer representative review progress and re evaluate priorities with a view to optimizing the return on investment ROI and ensuring alignment with customer needs and company goals.In agile software development, an information radiator is a normally large physical display located prominently near the development team, where passers by can see it.It presents an up to date summary of the product development status.A build light indicator may also be used to inform a team about the current status of their product development.Very short feedback loop and adaptation cycleeditA common characteristic in agile software development is the daily stand up also known as the daily scrum.In a brief session, team members report to each other what they did the previous day toward their teams iteration goal, what they intend to do today toward the goal, and any roadblocks or impediments they can see to the goal.Quality focuseditSpecific tools and techniques, such as continuous integration, automated unit testing, pair programming, test driven development, design patterns, domain driven design, code refactoring and other techniques are often used to improve quality and enhance product development agility.PhilosophyeditCompared to traditional software engineering, agile software development mainly targets complex systems and product development with dynamic, non deterministic and non linear characteristics.Tim Hentenaars Blog.Update On Sep. 2.Zed Shaw wrote a rebuttal to this post.You. can find the details here.Across the vastness of the internet, there are many resources for aspiring.Nowadays you can find the answer to most.Google search. Before this explosion of.Recently, I came across an e book written by.Zed A. Shaw entitled.Learn C The Hard Way, and while.I can commend the author for spending the time and energy to write it.I would NOT recommend it to anyone seriously interested in learning the.C programming language.In fact, if you were one of the unlucky souls who.Go right now and at least try to get your.In the same vein of the authors own critique.The C Programming Language, 2nd Ed.Ill hereafter also refer to as K R2, Im going to critique the.Although, from what Ive read the author has little.Let me start by saying that unlike Mr.Shaw, I am not a writer.Im. an engineer. Thus, this will be written from that perspective.All. I would ask of those who read this, is to keep an open mind, and try.As programmersengineerswhatever the hell people call us these days.With the. explosion of the open source movement, there are opportunities.But, also, in our work lives, criticism comes with the job.Personally. I consider it to be a necessary skill in the work place to be able to.My attitude towards it is.If you believe theres something wrong with my work, prove it so that it.I can learn from the experience.However, I still.I do take pride in my work, as we all should, but I dont take it.I expect that anyone who gives criticism should be able to.The whole point of this article is this Dont learn C the wrong way.Do your own research, learn as much as you can, read K R2, dig.IRC, etc. Dont. just take anyones word for it, not even mine.TL DR To summarize my views, which are laid out below, the author.Ive tried to view this book.I am biased by years of.C. Its obvious to me that either the author.C, or hes deliberately oversimplifying to.Its also unclear which standard of C the author is targeting.In the. beginning it looks like it could be ANSI C.Further on, in Exercise.Zeds Awesome Debug Macros you can see that these are variadic.C9. 9. Im going to analyze the first few parts of the book, then skip to the.K R2. What I. These missing concepts are well. Windows Live Old Version Installer Flash . K R2. At the end of this piece, Ill give some final thoughts.Part 1 The Introduction.Now, lets begin ith the introduction.First, a quote from Descartes.C, likening it to.Devil, Satan, the trickster.Loki. and a computational Lucifer with whom you must make.While Im certain there are many.C, Im certain that.Its true that one must be more aware of what theyre doing in C, than.With greater power comes greater.The higher level languages to which a lot of aspiring.C programmers are accustomed, such as Ruby and Python, provide.In C, you have. much more control over what your program is doing, and also much more.To the uninitiated Keep in mind that both.Ruby and Python are in fact written in C.The author apparently feels that writing code in C is inherently.Perhaps he meant to say, ignoranceIts an ironic quote, considering the author has published two other.The C programming languages only failing is giving you access to what.C gives you. the red pill.C pulls the curtain back to show you the wizard.C is truth. Why use C then if its so dangerous Because C gives you power over the.Zed A. Shaw, Learn C The Hard Way, Introduction.Im not going to say too much about the rest of this section, its.Mainly the same sort of introductory filler.How To book. Part 2 The Setup.Reading this section, I do agree with the last sentence in this block.You can write C code for Windows, thats not a problem.The problem is. all of the libraries, functions, and tools are just a little off from.C world. C came from Unix and is much easier on a.Unix platform. Zed A Shaw, Learn C The Hard Way, Exercise 0 The Setup.C was designed on UNIX, and was basically made for UNIX.Thats a matter. of historical record.But to say that on Windows everything is a little.I understand that the book is aimed.When it comes to setup instructions, it doesnt appear that the author.In my opinion, second only to the importance of learning the language.For Mac OS X. the author writes.Zed A Shaw, Learn C The Hard Way, Exercise 0 The Setup Mac OS X.Isnt that great folksThe author of a How To book says, Google it.The Winblows users are stuck.For Windows users Ill show you how to get a basic Ubuntu Linux system up.Windows installation problems.Zed A Shaw, Learn C The Hard Way, Exercise 0 The Setup Windows.While its true a lot of things on Windows are utterly painful not to.POSIX compatible.Windows, believe it or not.Theres still good ol.Cygwin. BSD isnt even mentioned.Linux are apt get and.PIf I were a novice programmer and had purchased this book, Id have a.I didnt know how.The author goes on to lament that.An IDE, or Integrated Development Environment will turn you stupid.They are the worst tools if you want to be a good programmer because.They are useful if youre trying to get something done and the.IDE, but for learning to code C.Zed A Shaw, Learn C The Hard Way, Exercise 0 The Setup.Personally, I find that IDEs do hide too many things from you, Im a.However, this whole paragraph, like a lot of the opinions.There are plenty of people.IDEs, and as far as IDEs that.Eclipse comes to mind.Part 3 Getting Acquainted with the Compiler.Finally, we start getting down to something concrete.The author kicks.Hello, World example, which appears to be.Then prompts the user to invoke make to build.EDIT Some feedback Ive received claims that Im somehow ignorant.Makes implicit rules because of the wording in this next paragraph.Let me clarify. I am well aware of makes.Those whove felt the need to pick on this point are.I congratulate you, or theyre.Jimmy Hoffa joke which is an analogy for most of the.Besides, it should be wholly obvious to you that this.Besides, whats the point of being a critic if I cant have a little.Wait a tic. Wheres the Makefile Ive got just about as much chance of.FBI does of finding Jimmy Hoffa.Am I just supposed to.I find this to be really bad form on the.He should have started by waking the user through invoking.C compiler to build it, explained the steps in brief, etc.He then goes on to explain what a compiler warning is, etc.If I were a novice programmer reading this book, I would be completely.Hello World program.Part 4 Make is the new Python.Even the title of this section is wrong on so many levels.Theres. absolutely no correlation between make and python.Theyre. two completely different things.Even in an attempt to oversimplify for.What if the reader has no experience with Python.The author is making an.C, but. C is a different beast completely where you have to compile your.Doing this manually is a pain, and in the last exercise.Zed A. Shaw, Learn C The Hard Way, Exercise 2 Make is your new Python.So, first we have no environment and a phantom Makefile.Now, we have. a section about make and still no Makefile.Now, the author continues.It appears he also forgot about the separation of responsibilities between.Quite. an oversight for someone writing a presumably modern book.The difference is, Im going to show you smarter Makefile wizardry.C program to get it to build.I wont do that in this exercise, but.Ill show you. Zed A.Shaw, Learn C The Hard Way, Exercise 2 Make is your new Python.At this point, the only thing I can think is, Id just love for you.Makefile A novice will be thinking, What.Makefile as the concept of a Makefile has not yet.Not to mention the fact that all the examples thus.Part 5 Formatted Printing.So, finally printf gets introduced.The author fails, in my.This has the reader using.This has become a repetitive theme in this book, and.I were a novice, Id find it very confusing.The code the author.Keep in mind the declaration.Its the same style used in K R2.I am d years old.I am d inches tall.At least this time, the author explains his example step by step.But. I found the explanation a little tiring to read, and slightly confusing.First youre including another header file called stdio.This tells. the compiler that youre going to use the standard InputOutput.One of those is printf. |
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