tuples

At this answer here on SO, there's a comment suggesting a useful C++ construct, similar to make_zip_iterator , but for ranges: It takes a tuple of ranges and produces a new range - whose begin() and end() iterators are the appropriate zip iterators. Now, this should not be too difficult to implement, but I was wondering - Isn't already offered already by Boost somehow? Boost.Range is providing combine() function as zip_iterator 's range. http://www.boost.org/doc/libs/1_56_0/libs/range/doc/html/range/reference/utilities/combine.html 来源： https://stackoverflow.com/questions/26288520/does-boost

I want to find the matching item from the below given list.My List may be super large. The very first item in the tuple "N1_10" is duplicated and matched with another item in another array tuple in 1st array in the ListA ('N1_10', 'N2_28') tuple in 2nd array in the ListA ('N1_10', 'N3_98') ListA = [[('N1_10', 'N2_28'), ('N1_35', 'N2_44')], [('N1_22', 'N3_72'), ('N1_10', 'N3_98')], [('N2_33', 'N3_28'), ('N2_55', 'N3_62'), ('N2_61', 'N3_37')]] what I want for the output is output --> [('N1_10','N2_28','N3_98') , .... and the rest whatever match one of the key will get into same tuple ] If you

This is inside tableview cellforrowatindexpath var valueArray:[(String,String)] = [] if !contains(valueArray, v: (title,status)) { let v = (title,status) valueArray.append(v) } This is inside didselectrowatIndexPath let cell = self.tableView.cellForRowAtIndexPath(selectedRow!) var newTuple = (cell!.textLabel!.text!, cell!.detailTextLabel!.text!) let index = valueArray.indexOf(newTuple) But i am not getting the index. It is throwing an error cannot convert value of type '(String,String)' to expected argument type '@noescape ((String,String)) throws -> Bool'. What i am doing wrong here? Tuples

I need to write a function to convert tuple to byte array. The type of tuple may include int, long, double, std::string, char* ,etc. The size and type of tuple are arbitrary, such as std:tuple<string, int, double> t1("abc", 1, 1.3); or std:tuple<char*, int, int, float, double, string> t2("abc", 1, 2, 1.3, 1.4, "hello"); I want use these tuple as input, and the byte array as return value. What should I do ? There is also the brilliant C++ API for message pack which supports tuples natively #include <string> #include <sstream> #include <tuple> #include <msgpack.hpp> int main() { auto t = std:

I have written the following basic Tuple template: template <typename... T> class Tuple; template <uintptr_t N, typename... T> struct TupleIndexer; template <typename Head, typename... Tail> class Tuple<Head, Tail...> : public Tuple<Tail...> { private: Head element; public: template <uintptr_t N> typename TupleIndexer<N, Head, Tail...>::Type& Get() { return TupleIndexer<N, Head, Tail...>::Get(*this); } uintptr_t GetCount() const { return sizeof...(Tail) + 1; } private: friend struct TupleIndexer<0, Head, Tail...>; }; template <> class Tuple<> { public: uintptr_t GetCount() const { return 0; }

I have a config file like this. [rects] rect1=(2,2,10,10) rect2=(12,8,2,10) I need to loop through the values and convert them to tuples. I then need to make a tuple of the tuples like ((2,2,10,10), (12,8,2,10)) To turn the strings into tuples of ints (which is, I assume, what you want), you can use a regex like this: x = "(1,2,3)" t = tuple(int(v) for v in re.findall("[0-9]+", x)) And you can use, say, configparser to parse the config file. Instead of using a regex or int/string functions, you could also use the ast module's literal_eval function, which only evaluates strings that are valid