What is the difference between the val and var keywords in Scala?

Scala Interview Question: What is the difference between the val and var keywords in Scala?

In Scala, val and var are both keywords used for declaring variables, but they have distinct differences:

• val: Variables declared with val are immutable, meaning that once assigned a value, it cannot be reassigned. It is similar to declaring a constant.
• var: Variables declared with var are mutable, allowing the value to be changed or reassigned over time.

It is generally recommended to use val whenever possible to promote immutability and safer code practices, as it helps prevent unintended side effects and makes the code more predictable.