c++ - What exactly does stringstream do? - Stack Overflow
WEB20. To answer the question. stringstream basically allows you to treat a string object like a stream, and use all stream functions and operators on it. I saw it used mainly for the formatted output/input goodness. One good example would be c++ implementation of converting number to stream object.
What's the difference between istringstream, ostringstream and ...
WEBA stringstream is somewhat larger, and might have slightly lower performance -- multiple inheritance can require an adjustment to the vtable pointer. The main difference is (at least in theory) better expressing your intent, and preventing you from accidentally using >> where you intended << (or vice versa).
How to use stringstream to separate comma separated strings
WEBJul 30, 2012 · The output is: abc. def,ghi. So the stringstream::>> operator can separate strings by space but not by comma. Is there anyway to modify the above code so that I can get the following result? input: "abc,def,ghi". output: abc. def.
c++ - How to initialize a std::stringstream? - Stack Overflow
WEBFeb 21, 2014 · Just create the stringstream - optionally providing a single string to the constructor - then use operator<< in a second statement: std::stringstream ss; ss << "Number of people is " << numPeople; This is much easier to read, and there are no weird macros required.
How do you clear a stringstream variable? - Stack Overflow
WEBSep 3, 2015 · My primary use-case for flushing a stringstream object is keeping a threadlocal stringstream object around to prevent unecessary instantiation of the stringstream -- instantiating a new stringstream object copies the global locale object -- theoretically this is quick and only involved incrementing an atomic, but at the level of …
How do I convert from stringstream to string in C++?
WEBMar 19, 2009 · return oss.str(); } For all the methods above, you must include the following two header files. #include <string>. #include <sstream>. Note that, the argument NumericValue in the examples above can also be passed as std::string or std::wstring to be used with the std::ostringstream and std::wostringstream instances respectively.
stringstream, string, and char* conversion confusion
WEBMay 6, 2015 · stringstream.str() returns a temporary string object that's destroyed at the end of the full expression. If you get a pointer to a C string from that (stringstream.str().c_str()), it will point to a string which is deleted where the statement ends. That's why your code prints garbage. You could copy that temporary string object to some other ...
.net - StringStream in C# - Stack Overflow
WEBI want to be able to build a string from a class that I create that derives from Stream. Specifically, I want to be able to write code like this: void Print(Stream stream) {. // Some code that operates on a Stream. } void Main() {. StringStream stream = new StringStream(); Print(stream); string myString = stream.GetResult();
c++ - how to reuse stringstream - Stack Overflow
WEBTo reuse stringstream you need to reset the flags first and set the internal stringbuf ptr to the beginning by. std::stringstream ss; ... ss.clear(); ss.seekp(0, std::ios_base::beg); This will print correct values after each str() call. Note, clear() wont reset used formatting flags and each str() call will copy out a new string.
std::stringstream vs std::string for concatenating many strings
WEBFeb 7, 2013 · 2. In a recent set of benchmarks conducted on Quick-Bench, std::stringstream demonstrated lower performance compared to concatenating strings using the std::string += operator. This is a notable finding because appending multiple strings and literals is a frequent operation in string processing.