Rust Programming Cookbook

How it works...

Sequence types are compound types that allocate a continuous part of the memory for faster and easier access. Vec<T> creates a simple, heap-allocated version of an array that grows (and shrinks) dynamically (step 4).

The original array (step 2) allocates memory on the stack and has to have a known size at compile time, which is a significant factor in using it. Both can be iterated and viewed using slices (https://doc.rust-lang.org/book/ch04-03-slices.html).

Tuples (step 3) are a different beast since they don't lend themselves to slices and are more a group of variables that have a semantic relationship—like a point in a two-dimensional space. Another use case is to return more than one variable to the caller of a function ...