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C++程序设计语言(第4部分:标准库)(原书第4版)
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C++程序设计语言(第4部分:标准库)(原书第4版)

by 本贾尼 斯特劳斯特鲁普
August 2021
Intermediate to advanced
450 pages
6h 57m
Chinese
Pearson
Content preview from C++程序设计语言(第4部分:标准库)(原书第4版)

38.7 建议

[1]若用户自定义类型的值存在有意义的文本表示,可为其定义<<和>>;38.1节,38.4.1节,38.4.2节。

[2]用cout进行正常输出,用cerr输出错误;38.1节。

[3]标准库提供了普通字符和宽字符的iostream,你可以为任意类型的字符定义iostream;38.1节。

[4]标准库为标准I/O流、文件和string定义了标准iostream;38.2节。

[5]不要尝试拷贝一个文件流;38.2.1节。

[6]二进制I/O依赖于系统;38.2.1节。

[7]在使用文件流之前记得检查它是否已关联到文件;38.2.1节。

[8]优先选择ifstream和ofstream而非通用的fstream;38.2.1节。

[9]用stringfstream进行内存中的格式化;38.2.2节。

[10]用异常机制捕获稀少的bad()-I/O错误;38.3节。

[11]用流状态fail处理潜在的可恢复I/O错误;38.3节。

[12]为了定义新的<<和>>你无需修改istream或ostream;38.4.1节。

[13]当实现iostream原语操作时,使用sentry;38.4.1节。

[14]优先选择格式化输入而非未格式化的、底层的输入;38.4.1节。

[15]读取输入存入string不会导致溢出;38.4.1节。

[16]当使用get()、getline()和read()时,要小心结束标准;38.4.1节。

[17]>>默认忽略空白符;38.4.1节。

[18]你可以定义行为类似虚函数的<<(或>>),其行为由其第二个运算对象所决定;38.4.2.1节。

[19]优先选择操纵符而非状态标志来控制I/O;38.4.3节。

[20]如果你希望混合C风格I/O和iostream-I/O,使用sync_with_stdio(true);38.4.4节。 ...

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Publisher Resources

ISBN: 9787111544395