std::strstream::str
From cppreference.com
| char* str();
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Returns the pointer to the beginning of the buffer, after freezing it. Effectively calls rdbuf()->str()
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Notes
After a call to str(), dynamic streams become frozen. A call to freeze(false) is required before exiting the scope in which this strstream object was created. otherwise the destructor will leak memory. Also, additional output to a frozen stream may be truncated once it reaches the end of the allocated buffer.
[edit] Parameters
(none)
[edit] Return value
Pointer to the beginning of the buffer in the associated std::strsteambuf or NULL if no buffer is available.
[edit] Example
Run this code
#include <strstream> #include <iostream> int main() { std::strstream dyn; // dynamically-allocated output buffer dyn << "Test: " << 1.23; std::cout << "The output stream holds \"" << dyn.str() << "\"\n"; dyn << "Test: " << 1.23; std::cout << "The output stream holds \"" << dyn.str() << "\"\n"; // the stream is now frozen due to str() dyn << " More text"; std::cout << "The output stream holds \"" << dyn.str() << "\"\n"; dyn.freeze(false); }
Possible output:
The stream holds "Test: 1.23" The stream holds "Test: 1.23 More "
See also
| marks the buffer frozen and returns the beginning pointer of the input sequence (public member function of std::strstreambuf)
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