Declaring and initializing std::vector
Having established the foundational knowledge of std::vector in C++ development, it’s time to delve into its practical applications—expressly, how to declare and initialize vectors.
The essence of std::vector lies in its dynamic nature. Unlike traditional arrays with fixed sizes, vectors can grow or shrink as necessary, making them a versatile tool for developers.
Declaring a vector
The performance of std::vector stems from its design, which combines the benefits of a contiguous memory layout (such as arrays) with the flexibility of dynamic resizing. It reserves memory to hold that many elements when initialized with a specified size. But if the vector fills up and more capacity is needed, it allocates a larger memory block, transfers the existing elements, and deallocates the old memory. This dynamic resizing process is optimized to reduce overhead, ensuring that vectors remain efficient. The fusion of contiguous storage...
