The Planning Game Players: Business People VS Development People Pieces: Store Careds Moves: 1. Find out what new things the system could do Write a story(Biz) -> Estimate a story(Dev) -> Split a story if development can’t estimate 2. Choose the most valuable subset of requirements Sort the …
No side should dictate. If biz people are in charge, there will be missions impossible. If tech people are in charge, they will do a lot of things for fun(cool tools, technology, etc.), which are risky. Let the biz people tell what they want, and let the tech people tell what the price …
Notes on XP — No.11: Business People V.S. Technical People Read More »
Pair Programming Collective Ownership — Everybody can change any part of the system, via Pair Programming Continuous Integration — hour-basis 40-Hour Week — If you are not fresh or rested, you can’t perform other practices well On-Site Customer — He can help you development software better and sonner. The advantage of this will outweight of …
Planning Grame. Determine the scope, proirity and estimates. Small Releases Metaphor Simple Design — Run all tests, no duplication, not complicated Testing Refactoring
Coding Testing Listening Designing: part of daily business
Rapid feedback Assume simplicity Incremental change Embracing change Quality work Others: Work with human nature, not against it Play to win, not play not to lose
有本书里提到了“曳光弹”这个东西。它让你在暗夜开枪时，除了靠你的本事命中目标之外，同时还会帮你把子弹的轨迹在夜空里展现出来。 在JAVA编程时，一种典型的曳光弹就是日志。 在SQL编程时，也可以用到曳光弹这个技巧。 一个例子就是：找出所有 A.a = B.a 的 A.c 记录集。我们在写这个SQL时，除了 select A.c之外，也可以同时select出 A.a 和 B.a，然后就可以用肉眼检查一下A.a和B.a是否相等，这样可以帮助保证SQL程序的质量。 另外一个例子是：找出所有符合某个条件的记录集，然后对它们进行批量更新。对这种问题，我们可也直接写一条 update + where全部搞定，但也可以先把符合条件的记录集插到一种临时表中，然后再按临时表去更新实际的记录。当你回头去看临时表时，你就可以切实地看到哪些记录被修改，可以检查这些记录是否符合修改条件，从而也更加保证了SQL程序的质量。
There are Four core values for XP 1. Communication The more you communicate, the less you make a mistake 2. Simplicity The simpler the system is, the less you have to communicate 3. Feedback a. Feedback from tests b. Feedback from people The more feedback you have,the …
" Driving is about constantly paying attention, making a little correction this way, a little correction that way", said Kent Beck’s mum. Note that the driver of a software project is the customer. The customer should keep his eyes on the road, that is the system under developing. So what do we programmers do? We …
Notes on XP — No.5: Software process is like driving a car Read More »
This chapter is exiting, but also making people to doubt. Traditional views believe that the cost of changing a program rises exponentially over time. And it’s better to make decisions at the early stages. But Kent Beck believes that we can make the cost of change so low that this cost-time curve can be a …