WebNov 23, 2009 · 15. You can use range for statement to iterate all the elements in a two-dimensional vector. vector< vector > vec; And let's presume you have already push_back a lot of elements into vec; for (auto& row:vec) { for (auto& col:row) { //do something using the element col } } Share. WebApr 6, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.

for_each - cplusplus.com

WebMar 28, 2024 · C++11, which you are using if this compiles, allows the following: for (string& feature : features) { // do something with `feature` } This is the range-based for loop. If you don’t want to mutate the feature, you can also declare it as string const& (or just string, but that will cause an unnecessary copy). WebC++: Iterate over a vector using iterators. We can also use the iterators to loop over all elements of a vector. In C++, vector class provides two different functions, that returns … bold 9780 lcd replacement

c++ - iterator for 2d vector - Stack Overflow

Webtemplate< class I, class F >. using for_each_result = ranges::in_fun_result; (3) (since C++20) 1) Applies the given function object f to the result of the value projected by each … WebForeach loops work by doing something for each element rather than doing something n times. Although there is no foreach loop in C, it is supported by C++ and Java. It was first … WebApr 12, 2024 · We can spot the answer on C++ Reference! std::vector has only one constructor involving a std::initializer_list and there the initializer_list is taken by value. In other words, vector copies its initializer_list. Always. As the passed in initializer_list is going to be copied, the contained type must be copy-constructible. bold 9000 user manual