For Expressions
Explore Scala for expressions to handle option types safely, generate combinations, apply filters, and write parallel code. Understand how for comprehensions simplify complex operations and avoid null-pointer errors using Option with Some and None.
We'll cover the following...
We'll cover the following...
For loops?
The for expression in Scala is a very powerful feature. It can be used similar to a normal “for loop” but can also be used for parallel programming and to avoid null-pointer exceptions.
First, we will discuss how to avoid null-pointer exceptions. Scala has Option for this, which has two implementations: Some and None. Some wrapping a value, and None representing a null value.
For example, imagine we want to create a Person object only if firstName and ...