How does c++ std::vector work? - Stack Overflow
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 …
Delete all items from a c++ std::vector - Stack Overflow
I'm trying to delete everything from a std::vector by using the following code
When should I use a std::inplace_vector instead of a std::vector?
Oct 29, 2024 · 28 There is a new std::inplace_vector in the C++ standard library that seems to have a fixed capacity defined at compile time. I'm trying to understand a use case for …
c++ - std::vector: vec.data () or &vec [0] - Stack Overflow
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 …
How to assign a std::vector using a C-style array?
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 ...
How do I find an element position in std::vector? - Stack Overflow
I need to find an element position in an std::vector to use it for referencing an element in another vector: int find( const vector<type>& where, int searchParameter ) { for( int i =...
c++ - std::vector of std::vectors contiguity - Stack Overflow
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.
How do I erase an element from std::vector<> by index?
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.
c++ - Appending a vector to a vector - Stack Overflow
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 …
How do you copy the contents of an array to a std::vector in C++ ...
How do you copy the contents of an array to a std::vector in C++ without looping? Asked 17 years, 1 month ago Modified 1 year, 2 months ago Viewed 275k times