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c++ Programming Glossary: seekpReading and writing to the same file using the same fstream http://stackoverflow.com/questions/17536570/reading-and-writing-to-the-same-file-using-the-same-fstream ios out std ios binary char byte stream.read byte 1 stream.seekp 1 int bytesCount 4096 auto bytesVec std vector char bytesCount.. false but still nothing gets written. If I uncomment the seekp line the writing starts working bad returns false and the bytes.. false and the bytes actually get written. Why is the seekp necessary here Why doesn't it work without it Is the seekp the..
Turning temporary stringstream to c_str() in single statement http://stackoverflow.com/questions/2433071/turning-temporary-stringstream-to-c-str-in-single-statement though f static_cast std ostringstream std ostringstream .seekp 0 Value 5 .str .c_str That of course is ugly. But it shows how.. That of course is ugly. But it shows how it can work. seekp is a member function returning a std ostream . Would probably..
C++ format macro / inline ostringstream http://stackoverflow.com/questions/303562/c-format-macro-inline-ostringstream std dec Kudos to cadabra Or we could use ostringstream . seekp 0 ios_base cur ostringstream . write 0 ostringstream . flush.. ITEMS dynamic_cast ostringstream ostringstream . seekp 0 ios_base cur ITEMS . str References IOstream Library ostringstream..
Best way to empty stringstream? http://stackoverflow.com/questions/834622/best-way-to-empty-stringstream s.str std string @litb gets into more detail about how to seekp to the start of the stream combined with std ends you can keep..
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