How is vector implemented in C++ - Stack Overflow
Jan 7, 2020 · Since vector is a template, you actually should have its source to look at if you want a reference – if you can get past the preponderance of underscores, it shouldn't be too hard to …
C++ std::vector vs array in the real world - Stack Overflow
I work for HP on a 2.5 million line code base. We strive to use vectors any time we need a resizeable array. I've never seen the STL used in Academia, and I'm not sure why, but trust …
Is std::vector so much slower than plain arrays? - Stack Overflow
Sep 8, 2010 · vector is implemented as an array. That's not "conventional wisdom", its the truth. You've discovered that vector is a general purpose resizable array. Congratulations. As with …
What are vectors and how are they used in programming?
This pair (3, 4) is also a mathematical vector. In programming, this name "vector" was originally used to describe any fixed-length sequence of scalar numbers. A vector of length 2 represents …
When should I use vector::at instead of vector::operator []?
Since it is unlikely that an out of bounds access to a vector is part of the normal program flow (in the case it is, you're right: check beforehand with size instead of letting the exception bubble …
std::vector versus std::array in C++ - Stack Overflow
Dec 12, 2010 · std::vector is a template class that encapsulate a dynamic array 1, stored in the heap, that grows and shrinks automatically if elements are added or removed. It provides all …
Relative performance of std::vector vs. std::list vs. std::slist?
Oct 26, 2008 · A vector has an array of elements addressed by index. From this you can see that both can do efficient forwards and backwards traversal, while only a vector can provide …
массивы - Двумерный vector - Stack Overflow на русском
Nov 29, 2011 · Подскажите, пожалуйста, как написать, заполнить и вывести двумерный vector. С одномерным все ясно, а вот двумерные никак не могу понять((
Arrays vs Vectors: Introductory Similarities and Differences
Feb 26, 2013 · A vector is a dynamically-sized sequence of objects that provides array-style operator[] random access. The member function push_back copies its arguments via copy …
c++ - Vector of Vectors to create matrix - Stack Overflow
I am trying to take in an input for the dimensions of a 2D matrix. And then use user input to fill in this matrix. The way I tried doing this is via vectors (vectors of vectors). But I have encount...