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fix: typo error of 2.3 #248

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Aug 20, 2022
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fix: typo error of 2.3 #248

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fix: typo error of 2.3
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@AlanHN
AlanHN committed Aug 20, 2022
commit dc0a06c80908ba5b3c62772a3fa3fb14f61b733b
4 changes: 2 additions & 2 deletions book/en-us/02-usability.md
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Original file line number Diff line number Diff line change
Expand Up @@ -378,8 +378,8 @@ One of the most common and notable examples of type derivation using `auto` is t
```cpp
// before C++11
// cbegin() returns vector<int>::const_iterator
// and therefore itr is type vector<int>::const_iterator
for(vector<int>::const_iterator it = vec.cbegin(); itr != vec.cend(); ++it)
// and therefore it is type vector<int>::const_iterator
for(vector<int>::const_iterator it = vec.cbegin(); it != vec.cend(); ++it)
```

When we have `auto`:
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4 changes: 2 additions & 2 deletions book/zh-cn/02-usability.md
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Expand Up @@ -314,8 +314,8 @@ C++11 引入了 `auto` 和 `decltype` 这两个关键字实现了类型推导，
```cpp
// 在 C++11 之前
// 由于 cbegin() 将返回 vector<int>::const_iterator
// 所以 itr 也应该是 vector<int>::const_iterator 类型
for(vector<int>::const_iterator it = vec.cbegin(); itr != vec.cend(); ++it)
// 所以 it 也应该是 vector<int>::const_iterator 类型
for(vector<int>::const_iterator it = vec.cbegin(); it != vec.cend(); ++it)
```

而有了 `auto` 之后可以：
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