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c++ Programming Glossary: iteratorhttp://stackoverflow.com/questions/1120140/csv-parser-in-c representing a row. Then stream into that object #include iterator #include iostream #include fstream #include sstream #include.. 3 n But with a little work we could technically create an iterator class CSVIterator public typedef std input_iterator_tag iterator_category.. an iterator class CSVIterator public typedef std input_iterator_tag iterator_category typedef CSVRow value_type typedef std..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c string #include sstream #include algorithm #include iterator int main using namespace std string sentence And I feel fine..... And I feel fine... istringstream iss sentence copy istream_iterator string iss istream_iterator string ostream_iterator string.. iss sentence copy istream_iterator string iss istream_iterator string ostream_iterator string cout n Instead of copying the..
Read whole ASCII file into C++ std::string http://stackoverflow.com/questions/2602013/read-whole-ascii-file-into-c-stdstring 11 how to read in file in c.html You can make a streambuf iterator out of the file and initialize the string with it #include string.. std ifstream t file.txt std string str std istreambuf_iterator char t std istreambuf_iterator char Not sure where you're getting.. string str std istreambuf_iterator char t std istreambuf_iterator char Not sure where you're getting the t.open file.txt r syntax..
Printing lists with commas C++ http://stackoverflow.com/questions/3496982/printing-lists-with-commas-c pretty print share improve this question Use an infix_iterator infix_iterator.h Lifted from Jerry Coffin's 's prefix_ostream_iterator.. share improve this question Use an infix_iterator infix_iterator.h Lifted from Jerry Coffin's 's prefix_ostream_iterator #if.. Lifted from Jerry Coffin's 's prefix_ostream_iterator #if defined INFIX_ITERATOR_H_ #define INFIX_ITERATOR_H_ #include..
Using arrays or std::vectors in C++, what's the performance gap? http://stackoverflow.com/questions/381621/using-arrays-or-stdvectors-in-c-whats-the-performance-gap C array in a small class and provides a size function and iterators to iterate over it. Now the std vector vs. native C arrays.. struct S int padding std vector int v int p std vector int iterator i int pointer_index S s return s.p 3 movq 32 rdi rax movl 12.. S s return s.p movq 32 rdi rax movl rax eax ret int iterator_deref S s return s.i movq 40 rdi rax movl rax eax ret Conclusion..
http://stackoverflow.com/questions/4421706/operator-overloading which could be something as innocently looking as a list iterator . Once you got used to do i it becomes very hard to remember.. Operators for Pointer like Types For defining your own iterators or smart pointers you have to overload the unary prefix dereference.. rarely used and thus rarely ever overloaded. In fact even iterators do not overload it. Continue to Conversion Operators share..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers std ostream o const C T x o open for typename C const_iterator i x.begin i x.end i Old school for auto i x.begin i x.end i.. ish that can figure out if something has the necessary iterator Many thanks Update and solution After raising this problem again.. behaviour with non container classes that provide iterators. Header prettyprint.h #ifndef H_PRETTY_PRINT #define H_PRETTY_PRINT..
Is there a way to instantiate objects from a string holding their class name? http://stackoverflow.com/questions/582331/is-there-a-way-to-instantiate-objects-from-a-string-holding-their-class-name static Base createInstance std string const s map_type iterator it getMap find s if it getMap end return 0 return it second..
Where and why do I have to put the “template” and “typename” keywords? http://stackoverflow.com/questions/610245/where-and-why-do-i-have-to-put-the-template-and-typename-keywords a scope like in the following example typename t template iterator int value_type v In some cases the keywords are forbidden as..
http://stackoverflow.com/questions/6438086/iterator-invalidation-rules invalidation rules What are the iterator invalidation rules for C containers Preferably in a summary.. likely to get read by those who came up with the idea. c iterator c faq share improve this question C 03 Source Iterator Invalidation.. Rules C 03 Insertion Sequence containers vector all iterators and references before the point of insertion are unaffected..
combination and permutation in C++ http://stackoverflow.com/questions/2211915/combination-and-permutation-in-c from STL we have std next_permutation template typename Iterator inline bool next_combination const Iterator first Iterator k.. typename Iterator inline bool next_combination const Iterator first Iterator k const Iterator last if first last first k last.. Iterator inline bool next_combination const Iterator first Iterator k const Iterator last if first last first k last k return false..
http://stackoverflow.com/questions/3623082/flattening-iterator as a single range 1 2 3 4 5 6 . template typename OuterIterator class flattening_iterator public typedef OuterIterator outer_iterator.. class flattening_iterator public typedef OuterIterator outer_iterator typedef typename OuterIterator value_type iterator.. OuterIterator outer_iterator typedef typename OuterIterator value_type iterator inner_iterator typedef std forward_iterator_tag..
http://stackoverflow.com/questions/6438086/iterator-invalidation-rules invalidation rules What are the iterator invalidation rules.. iterator c faq share improve this question C 03 Source Iterator Invalidation Rules C 03 Insertion Sequence containers vector..
http://stackoverflow.com/questions/839958/custom-iterator-in-c Iterator in C I have a class TContainer that is an aggregate of several.. collections pointers to TItems class. I need to create an Iterator to traverse the elements in all the collections in my TContainer.. std vector ItemVector m_Items What would be a good Iterator to traverse all the items contained in the vectors of the m_Items..
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