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#extractor-objects #scala
In Scala, patterns can be defined independently of case classes. To this end, a method named unapply is defined to yield a so-called extractor.
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Extractor Objects - Scala Documentation
<span>In Scala, patterns can be defined independently of case classes. To this end, a method named unapply is defined to yield a so-called extractor. For instance, the following code defines an extractor object Twice. object Twice { def apply(x: Int): Int = x * 2 def unapply(z: Int): Option[Int] = if (z%2 == 0) Some(z/2) else Non


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