September 2022
Beginner to intermediate
321 pages
4h 50m
Chinese
Content preview from 语义软件设计
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190
｜
第
8
章
•
尽量将单个数据项的范围缩至最小，直到你感觉自己在考虑明显没有什么帮助
的细节。然后逐渐扩大范围，直到你感觉这个范围依然非常紧凑，但仍然有用。
这有助于确保显著性。重复这个操作，但这一次主要关注这些术语对谁来说很
重要，以及用例的驱动者是谁。
•
不要做模糊的区分。世上不存在“简短的描述”和“完整的描述”。应该根据
它们擅长反映的真实世界的上下文，为其指定更强的类型。现实世界没有简短
的描述，也没有完整的描述。
•
在写下“主要渠道”和“次要渠道”的时候，要多加小心。二者有何不同？是
从谁的角度做的区分？这是一个层次结构，也是软件开发中常见的一种重叠。
现实世界中没有主要渠道和次要渠道之分。渠道就是渠道。有没有“三级渠道”
呢？这个问题就类似“简短的描述”和“完整的描述”。
•
宇宙中只有三个数字：零、一和许多。
•
“价格”真的属于产品表吗？我们无法仅通过产品表的信息来回答这个问题，
我们还需要供应商，因为张记五金店的一个水龙头需要
30
元，而在王记五金店
中只要
25
元。这是因为产品的价格实际上是对现实世界的错误表示，尽管我们
口头上常常这样表达。库存商品有价格，这时产品对应的是供应商。所以它更
真实，因此更不容易出错。此外，产品通常都没有价格，应该有的是“市场价”
或“基本价格”，还有军用价格或教育折扣等。重点在于，事物往往都比较复杂。
你需要审视复杂性，以便做出真实的陈述，合理地表达你正在做的产品。通常
事物都需要分类成一个列表。
•
在两个层次上引用同一个事物时就会产生割裂的思维。你需要考虑谁是用例的 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.