What is the difference between `let` and `var` in swift?

Question

What is the difference between let and var in Apple\'s Swift language?

In my understanding, it is a compiled language but it does not check

Answer 1

Let is an immutable variable, meaning that it cannot be changed, other languages call this a constant. In C++ it you can define it as const.

Var is a mutable variable, meaning that it can be changed. In C++ (2011 version update), it is the same as using auto, though swift allows for more flexibility in the usage. This is the more well-known variable type to beginners.