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Merge pull request #80 from bzsy/patch-2

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Update 02_Basic_Operators.md
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梁杰
2014-06-10 10:22:54 +08:00
parent c0daec5f4f e91a2de6b3
commit 81715fb9df
1 changed files with 2 additions and 2 deletions
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source/chapter2/02_Basic_Operators.md
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@ -199,7 +199,7 @@ let c = a++ // a 现在 2, 但 c 是 a 自增前的值 1
```swift
let three = 3
let minusThree = -three // minusThree 等于 -3
let plusThree = -minusThree // plusThree 等于 3, o或 "负负3"
let plusThree = -minusThree // plusThree 等于 3, 或 "负负3"
```
单目负号写在操作数之前, 中间没有空格.
@ -453,4 +453,4 @@ if (enteredDoorCode && passedRetinaScan) || hasDoorKey || knowsOverridePassword
这括号使得前两个值被看成整个逻辑表达中独立的一个部分. 虽然有括号和没括号的输出结果是一样的, 但对于读代码的人来说有括号的代码更清晰.
可读性比简洁性更重要, 请在可以让你代码变清晰地地方加个括号吧!
可读性比简洁性更重要, 请在可以让你代码变清晰地地方加个括号吧!