From Jason Turner

[istringstream.cons]

C++17 → C++20 3.5 KB 72 lines
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Archived: C++17 | C++20
Markdown: C++17 | C++20
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- #### `basic_istringstream` constructors <a id="istringstream.cons">[[istringstream.cons]]</a>
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  ``` cpp
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- explicit basic_istringstream(ios_base::openmode which = ios_base::in);
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  ```
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- *Effects:* Constructs an object of class
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- `basic_istringstream<charT, traits>`, initializing the base class with
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- `basic_istream(&sb)` and initializing `sb` with
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- `basic_stringbuf<charT, traits, Allocator>(which | ios_base::in))` ([[stringbuf.cons]]).
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  ``` cpp
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  explicit basic_istringstream(
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- const basic_string<charT, traits, Allocator>& str,
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  ios_base::openmode which = ios_base::in);
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  ```
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- *Effects:* Constructs an object of class
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- `basic_istringstream<charT, traits>`, initializing the base class with
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- `basic_istream(&sb)` and initializing `sb` with
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- `basic_stringbuf<charT, traits, Allocator>(str, which | ios_base::in))` ([[stringbuf.cons]]).
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  ``` cpp
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  basic_istringstream(basic_istringstream&& rhs);
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  ```
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  *Effects:* Move constructs from the rvalue `rhs`. This is accomplished
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  by move constructing the base class, and the contained
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- `basic_stringbuf`. Next `basic_istream<charT, traits>::set_rdbuf(&sb)`
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- is called to install the contained `basic_stringbuf`.
 
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+ #### Constructors <a id="istringstream.cons">[[istringstream.cons]]</a>
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  ``` cpp
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+ explicit basic_istringstream(ios_base::openmode which);
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  ```
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+ *Effects:* Initializes the base class with
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+ `basic_istream<charT, traits>(addressof(sb))` [[istream]] and `sb` with
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+ `basic_stringbuf<charT, traits, Allocator>(which | ios_base::in)`
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+ [[stringbuf.cons]].
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  ``` cpp
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  explicit basic_istringstream(
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+ const basic_string<charT, traits, Allocator>& s,
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  ios_base::openmode which = ios_base::in);
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  ```
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+ *Effects:* Initializes the base class with
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+ `basic_istream<charT, traits>(addressof(sb))` [[istream]] and `sb` with
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+ `basic_stringbuf<charT, traits, Allocator>(s, which | ios_base::in)`([[stringbuf.cons]]).
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+
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+ ``` cpp
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+ basic_istringstream(ios_base::openmode which, const Allocator& a);
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+ ```
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+
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+ *Effects:* Initializes the base class with
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+ `basic_istream<charT, traits>(addressof(sb))` [[istream]] and `sb` with
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+ `basic_stringbuf<charT, traits, Allocator>(which | ios_base::in, a)`
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+ [[stringbuf.cons]].
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+
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+ ``` cpp
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+ explicit basic_istringstream(
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+ basic_string<charT, traits, Allocator>&& s,
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+ ios_base::openmode which = ios_base::in);
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+ ```
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+
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+ *Effects:* Initializes the base class with
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+ `basic_istream<charT, traits>(addressof(sb))` [[istream]] and `sb` with
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+ `basic_stringbuf<charT, traits, Allocator>(std::move(s), which | ios_base::in)`
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+ [[stringbuf.cons]].
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+
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+ ``` cpp
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+ template<class SAlloc>
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+ basic_istringstream(
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+ const basic_string<charT, traits, SAlloc>& s,
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+ ios_base::openmode which, const Allocator& a);
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+ ```
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+
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+ *Effects:* Initializes the base class with
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+ `basic_istream<charT, traits>(addressof(sb))` [[istream]] and `sb` with
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+ `basic_stringbuf<charT, traits, Allocator>(s, which | ios_base::in, a)`([[stringbuf.cons]]).
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+
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+ ``` cpp
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+ template<class SAlloc>
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+ explicit basic_istringstream(
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+ const basic_string<charT, traits, SAlloc>& s,
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+ ios_base::openmode which = ios_base::in);
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+ ```
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+
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+ *Effects:* Initializes the base class with
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+ `basic_istream<charT, traits>(addressof(sb))` [[istream]] and `sb` with
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+ `basic_stringbuf<charT, traits, Allocator>(s, which | ios_base::in)`
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+ [[stringbuf.cons]].
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  ``` cpp
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  basic_istringstream(basic_istringstream&& rhs);
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  ```
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  *Effects:* Move constructs from the rvalue `rhs`. This is accomplished
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  by move constructing the base class, and the contained
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+ `basic_stringbuf`. Then calls
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+ `basic_istream<charT, traits>::set_rdbuf(addressof(sb))` to install the
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+ contained `basic_stringbuf`.
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