A little more aboutpattern matching!
And we are going to learn about a new operator:@!
The operator@allows you to capture the full entity the pattern matching has matched on.
It is convenient in numerous use case but here is a few examples.
case a @ "something" => // something with a
It is also very convenient in cases withOption:
opt match {
case s @ Some("abc") => s
case _ => Some(default)
}
Without it you would have to recreate a new object instead of reusing the one we already have.
Reveal more information and clues