From Jason Turner

[depr.ios.members]

C++14 → C++17 3.4 KB 109 lines
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Archived: C++14 | C++17
Markdown: C++14 | C++17
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tmp/tmpxl_4owzb/{from.md → to.md} RENAMED
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- ## Old iostreams members <a id="depr.ios.members">[[depr.ios.members]]</a>
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-
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- The following member names are in addition to names specified in Clause 
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- [[input.output]]:
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-
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- ``` cpp
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- namespace std {
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- class ios_base {
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- public:
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- typedef T1 io_state;
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- typedef T2 open_mode;
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- typedef T3 seek_dir;
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- typedef implementation-defined streamoff;
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- typedef implementation-defined streampos;
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- // remainder unchanged
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- };
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- }
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- ```
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-
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- The type `io_state` is a synonym for an integer type (indicated here as
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- `T1` ) that permits certain member functions to overload others on
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- parameters of type `iostate` and provide the same behavior.
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-
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- The type `open_mode` is a synonym for an integer type (indicated here as
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- `T2` ) that permits certain member functions to overload others on
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- parameters of type `openmode` and provide the same behavior.
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-
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- The type `seek_dir` is a synonym for an integer type (indicated here as
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- `T3` ) that permits certain member functions to overload others on
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- parameters of type `seekdir` and provide the same behavior.
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-
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- The type `streamoff` is an *implementation-defined* type that satisfies
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- the requirements of off_type in  [[iostreams.limits.pos]].
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-
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- The type `streampos` is an *implementation-defined* type that satisfies
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- the requirements of pos_type in  [[iostreams.limits.pos]].
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-
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- An implementation may provide the following additional member function,
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- which has the effect of calling `sbumpc()` ([[streambuf.pub.get]]):
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-
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- ``` cpp
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- namespace std {
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- template<class charT, class traits = char_traits<charT> >
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- class basic_streambuf {
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- public:
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- void stossc();
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- // remainder unchanged
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- };
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- }
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- ```
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-
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- An implementation may provide the following member functions that
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- overload signatures specified in Clause  [[input.output]]:
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-
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- ``` cpp
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- namespace std {
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- template<class charT, class traits> class basic_ios {
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- public:
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- void clear(io_state state);
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- void setstate(io_state state);
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- void exceptions(io_state);
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- // remainder unchanged
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- };
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-
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- class ios_base {
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- public:
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- // remainder unchanged
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- };
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-
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- template<class charT, class traits = char_traits<charT> >
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- class basic_streambuf {
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- public:
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- pos_type pubseekoff(off_type off, ios_base::seek_dir way,
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- ios_base::open_mode which = ios_base::in | ios_base::out);
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- pos_type pubseekpos(pos_type sp,
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- ios_base::open_mode which);
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- // remainder unchanged
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- };
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-
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- template <class charT, class traits = char_traits<charT> >
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- class basic_filebuf : public basic_streambuf<charT,traits> {
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- public:
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- basic_filebuf<charT,traits>* open
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- (const char* s, ios_base::open_mode mode);
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- // remainder unchanged
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- };
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-
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- template <class charT, class traits = char_traits<charT> >
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- class basic_ifstream : public basic_istream<charT,traits> {
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- public:
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- void open(const char* s, ios_base::open_mode mode);
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- // remainder unchanged
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- };
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-
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- template <class charT, class traits = char_traits<charT> >
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- class basic_ofstream : public basic_ostream<charT,traits> {
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- public:
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- void open(const char* s, ios_base::open_mode mode);
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- // remainder unchanged
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- };
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- }
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- ```
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-
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- The effects of these functions is to call the corresponding member
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- function specified in Clause  [[input.output]].
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-