std::istrstream
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在头文件 <strstream> 中定义
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class istrstream : public std::istream |
(已弃用) | |
类
istrstream
实现支持阵列流的输入操作。它实质上是封装了一组原始I / O设备实现(std::strstreambuf)进入更高层次的接口std::basic_istream. 原文:
The class
istrstream
implements input operations on array-backed streams. It essentially wraps a raw array I/O device implementation (std::strstreambuf) into the higher-level interface of std::basic_istream. 典型的实现
istrstream
持有非衍生只有一个数据成员:一个对象类型std::strstreambuf.原文:
The typical implementation of
istrstream
holds only one non-derived data member: an object of type std::strstreambuf.[编辑] 成员函数
构造一个istrstream,任选的缓冲区分配 原文: constructs an istrstream, optionally allocating the buffer (公共成员函数) | |
[虚]</div></div>
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解构一个istrstream,任选解除分配的缓冲区 原文: destructs an istrstream, optionally deallocating the buffer (公有虚成员函数) |
求出指针相关联的串字元流缓冲 原文: obtains a pointer to the associated strstreambuf (公共成员函数) | |
访问输出缓冲器 (公共成员函数) |
Inherited from std::basic_istream
Member functions
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提取物格式的数据 (公共成员函数of std::basic_istream )
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提取字符 (公共成员函数of std::basic_istream )
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读取下一个字符,而不提取 原文: reads the next character without extracting it (公共成员函数of std::basic_istream )
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unextracts一个字符 (公共成员函数of std::basic_istream )
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字符到输入流 (公共成员函数of std::basic_istream )
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提取字符,直到给定的字符被发现 原文: extracts characters until the given character is found (公共成员函数of std::basic_istream )
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提取物和丢弃给定字符的字符,直到被发现 原文: extracts and discards characters until the given character is found (公共成员函数of std::basic_istream )
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提取的字符块 (公共成员函数of std::basic_istream )
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提取已经可用块的字符 原文: extracts already available blocks of characters (公共成员函数of std::basic_istream )
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通过上次未格式化输入操作提取的字符数返回 原文: returns number of characters extracted by last unformatted input operation (公共成员函数of std::basic_istream )
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返回输入位置指示器 原文: returns the input position indicator (公共成员函数of std::basic_istream )
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sets the input position indicator (公共成员函数of std::basic_istream )
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与底层存储设备同步 原文: synchronizes with the underlying storage device (公共成员函数of std::basic_istream )
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Member classes
implements basic logic for preparation of the stream for input operations (公共成员类of std::basic_istream )
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Inherited from std::basic_ios
Member types
会员类型
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Definition |
char_type
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CharT |
traits_type
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Traits |
int_type
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Traits::int_type |
pos_type
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Traits::pos_type |
off_type
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Traits::off_type |
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检查,如果没有错误发生,即I / O操作都可以 原文: checks if no error has occurred i.e. I/O operations are available (公共成员函数of std::basic_ios )
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如果最终文件的检查已经达到了 原文: checks if end-of-file has been reached (公共成员函数of std::basic_ios )
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如果已经发生可恢复的错误检查 原文: checks if a recoverable error has occurred (公共成员函数of std::basic_ios )
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检查,如果已经发生了不可恢复的错误 原文: checks if a non-recoverable error has occurred (公共成员函数of std::basic_ios )
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(公共成员函数of std::basic_ios )
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(至 C++11) (C++11 起) |
检查,如果没有发生错误(同义词!fail()) 原文: checks if no error has occurred (synonym of !fail()) (公共成员函数of std::basic_ios )
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返回状态标志 (公共成员函数of std::basic_ios )
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设置状态标志 (公共成员函数of std::basic_ios )
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清除错误和EOF标志 (公共成员函数of std::basic_ios )
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格式化信息的副本 (公共成员函数of std::basic_ios )
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管理的填充字符 (公共成员函数of std::basic_ios )
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manages exception mask (公共成员函数of std::basic_ios )
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设置语言环境 (公共成员函数of std::basic_ios )
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管理相关的流缓冲 (公共成员函数of std::basic_ios )
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管理绑流 (公共成员函数of std::basic_ios )
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缩小字符 (公共成员函数of std::basic_ios )
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widens characters (公共成员函数of std::basic_ios )
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Inherited from std::ios_base
Member functions
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管理格式的标志 (公共成员函数of std::ios_base )
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设置特定格式的标志 (公共成员函数of std::ios_base )
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clears specific format flag (公共成员函数of std::ios_base )
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管理小数精度浮点运算 原文: manages decimal precision of floating point operations (公共成员函数of std::ios_base )
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manages field width (公共成员函数of std::ios_base )
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设置场景 (公共成员函数of std::ios_base )
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返回当前的区域设置 (公共成员函数of std::ios_base )
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[静态的]</div></div>
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返回一个程序范围内唯一的整数,它是安全使用指数PWORD()和iword() 原文: returns a program-wide unique integer that is safe to use as index to pword() and iword() (公共静态成员函数of std::ios_base )
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调整大小的私人存储,如果必要的,访问long元素在给定的索引 原文: resizes the private storage if necessary and access to the long element at the given index (公共成员函数of std::ios_base )
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调整大小的私人存储,如果必要的,访问void*元素在给定的索引 原文: resizes the private storage if necessary and access to the void* element at the given index (公共成员函数of std::ios_base )
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registers event callback function (公共成员函数of std::ios_base )
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[静态的]</div></div>
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C + +和C IO库的设置是否是可互操作的 原文: sets whether C++ and C IO libraries are interoperable (公共静态成员函数of std::ios_base )
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流异常 (公共成员类of std::ios_base )
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标准流对象进行初始化 原文: initializes standard stream objects (公共成员类of std::ios_base )
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类型
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Explanation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
流开放的模式类型
有以下常量的定义:
原文: stream open mode type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
格式化标志类型
有以下常量的定义:
原文: formatting flags type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
流类型的状态
有以下常量的定义:
(typedef) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
seeking direction type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
指定事件类型 (枚举) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
回调函数类型 (typedef) |
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