Jul 2, 2010 · The basics of std::vector physical representation is of a set of pointers using memory allocated from the heap. These pointers allow for the actual operations for accessing the elements …

May 24, 2012 · 1 Before C++11's std::array I would say that std::vector was the most common container to be used instead of the C-style array. The [] operator usually implies constant time access, (which …

I'm trying to delete everything from a std::vector by using the following code

Oct 29, 2024 · A std::vector (or anything else which requires dynamic allocation) is not usable within a constexpr expression. The inplace storage of std::inplace_vector allows it to be used as a constexpr …

std::vector< std::vector<T> > is a vector of objects, that are stored in contiguous block of memory. The fact that these objects are vectors too is irrelevant though.

What is the cheapest way to initialize a std::vector from a C-style array? Example: In the following class, I have a vector, but due to outside restrictions, the data will be passed in as C-style ...

Sadly, std::vector uses size_type for indexing, and difference_type for iterator arithmetic, so they don't work together if you have "-Wconversion" and friends enabled.

If a vector has N elements, there are N+1 possible answers for find. std::find and std::find_if return an iterator to the found element OR end () if no element is found.

Feb 21, 2009 · You can use the find function, found in the std namespace, ie std::find. You pass the std::find function the begin and end iterator from the vector you want to search, along with the …

Note that this is likely to be less efficient than using std::vector<>::insert(), because std::copy() can't reserve enough space before-hand (it doesn't have access to the vector itself, only to an iterator …