WebSep 21, 2015 · vector::const_iterator iter; is an iterator that refers to things that are constant, while const vector::iterator iter; would make the iterator itself constant, but allow you to modify the object it refers to. Share Improve this answer Follow answered Sep 21, 2015 at 13:55 Bo Persson 90.1k 31 146 203 WebJul 29, 2024 · If it's "run-time variable size", use std::vector. If it's known in compile time, use std::array, where n is your size. std::tuple is meant for a few of values of possibly different types, especially in a generic context; you can think about it more as an unnamed struct than a collection. Share Improve this answer Follow

【C++】vector的基本使用 - 腾讯云开发者社区-腾讯云

WebThe C++ Standard Library vector class is a class template for sequence containers. A vector stores elements of a given type in a linear arrangement, and allows fast random … truff0ire hermetise

stl - Generic vector of vectors in C++ - Stack Overflow

WebOct 18, 2012 · typedef vector template. I'm trying to add some typedef to my class, but the compiler reports a syntax erron on the following code: template class MyClass … WebJun 30, 2024 · To use typedef to specify fundamental and derived types in the same declaration, you can separate declarators with commas. For example: C++ typedef char … WebCreating a vector of vectors with your sizes with the constructor looks like this: std::vector< std::vector > matrix (size, std::vector (sizeY)); This means: size instances of a std::vector, each containing sizeY doubles (initialized to 0.0). Share Improve this answer Follow answered Jul 21, 2011 at 12:10 visitor 1,771 10 7 truffa account