Head first software development ebook

Use the Geolocation API to know where your users are. Go beyond just plugging a video into your pages, and create custom video experiences. And much more. You can remain a passive participant, or you can learn to code. Why does this book look so different? Based on the latest research in cognitive science and learning theory, Head First Learn to Code uses a visually rich format to engage your mind, rather than a text-heavy approach that puts you to sleep.

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Do algebraic concepts, equations, and logic just make your head spin? We have great news: Head First Algebra is designed for you. Full of engaging stories and practical, real-world explan System developers have used modeling languages for decades to specify, visualize, construct, and document systems.

UML makes it possible for team members to colla Ever wished you could learn C from a book? Head First C provides a complete learning experience for C and structured imperative programming.

With a unique method that goes beyond syntax and how-to manuals, this guide not only As the industry standard for platform-independent reusable business components, EJB has just become Sun Microsystem's latest devel Want to learn the Python language without slogging your way through how-to manuals?

Dive into C and create apps, user interfaces, games, and more using this fun and highly visual introduction to C ,. With this completely updated guide, which c Globe-trotting travelers have long resorted to handy, pocket-size dictionaries as an aid to communicating across the language barrier.

Dan Pilone's UML 2. The second edition of this best-selling Python book over , copies sold! There is no Systems programming provides the foundation for the world's computation. Writing performance-sensitive code requires a programming language that puts programmers in control of how memory, processor time, and other system reso Even bad code can function.

Every year, countless hours and significant resources are lost because of poorly written code. Do you use Excel for simple lists, but get confused and frustrated when it comes to actually doing something useful with all that data? Stop tearing your hair out: Head First Excel helps you painlessly move from spreadsheet d Talk to the customer. Remember, the customer sets priorities , not you.

You need to deal with new tasks like customer demos, and the best way to do this is to ask the customer what takes priority. Give the customer a chance to make a considered decision by estimating the amount of work that the new task requires and explaining how that will affect the current schedule.

Ultimately, the customer rules, so as long as they have all the information needed to make a choice, then you need to be prepared to go with their decision by reshuffling your existing tasks and user stories to make room for the surprise work.

Ultimately you need to keep your customer in the picture as to what is in and what is out. Adding new unplanned work is not the end of the world, but your customer needs to understand that the work has an impact, and then they can choose what that impact is. Unexpected task mean extra work. All of this means that your burn-down rate is affected, and not in a good way And remember, float is in work time, not actual time.

Q: You said to add unplanned tasks as red sticky notes. Do I have to use colored sticky notes? And why red? A: We picked red because regular tasks are usually on regular yellow sticky notes, and because red stands out as a warning color. A: Absolutely. Q: So velocity is all about how me and my team performed in the last iteration? A: Bingo. Velocity is a measure of how fast you and your team are working. The only way you can reliably come up with a figure for that is by looking at how well you performed in previous iterations.

Would it be OK to pick a faster or slower figure to start out with? Say 0. A: You can pick a different starting velocity, but you have to stand by what you pick. It always takes a little extra time to get your heads around what needs to be developed on a new project. Remember, velocity is about how fast you and your team can comfortably work, for real.

Doing some refactoring work is going to cost you time now, but the hope is that it will save you time in the long run. In addition you have the new demo that you need to prepare for the iSwoon CEO You and your development team are also on exactly the same page thanks to your board and the burn-down rate.

This means that although things look a bit bleak, at least no one is burying their heads in the sand. The challenges are right there on your wall. Successful software development is about knowing where you are. You know there are challenges, NOW. All is far from lost! Head First: Welcome, Velocity, glad you could make time in your busy day to come talk with us.

What would you say to those people? My role gets much more interesting as you move from Iiteration 1 to Iteration 2 and onwards. Head First: And what do you offer for each iteration, confidence?

Velocity: Absolutely. As you move from one iteration to the next you can recalculate me to make sure that you can successfully complete the work you need to. Velocity: Exactly! I tell you how fast you were performing in the last iteration. You can then take that value and come up with a chunk of work in the next iteration that you can be much more confident that you can accomplish. Head First: But when the unexpected comes along Head First: Risky because you really represent how fast your team works?

I represent how fast your team works. The danger is when people start using me as a pool of possible extra days of work Head First: So, if you could sum yourself up in one sentence, what would it be?

Thanks for making the time to come here today, Velocity. Skip to main content. Start your free trial. Chapter 4. Standup meeting There are three ways to look at your system Your users see the system from the outside Testers peek under the covers a little Developers let it all hang out Standup meeting Tools for your Software Development Toolbox 8.

NOW write code to get the test to pass. Different task, same process Red: write failing tests Green: write code to pass tests Simplicity means avoiding dependencies Always write testable code When things get hard to test, examine your design The strategy pattern provides for multiple implementations of a single interface Keep your test code with your tests Testing produces better code More tests always means lots more code Strategy patterns, loose couplings, object stand ins We need lots of different, but similar, objects What if we generated objects?

A mock object stands in for real objects Mock objects are working object stand-ins Good software is testable Tools for your Software Development Toolbox 9. Your iteration is just about complete Developer testing Tester testing System testing depends on a complete system to test Good system testing requires TWO iteration cycles More iterations means more problems The life and death of a bug So you found a bug Tools for your Software Development Toolbox Testing your code Houston, we really do have a problem The Real World: Having a process in life Pinning down a software development process There is no silver-bullet process A good process delivers good software Formal attire required UML class diagrams Class diagrams show relationships 2.

Sequence diagrams 3. User stories and use cases 4. System tests vs. Refactoring B. ISBN: