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We are not done yet in terms of the OO features in Scala; there is another very interesting way to work with classes in Scala: the so-called case classes. Case classes are great because you can have a class with way less number of lines of code and case classes can be part of a Pattern Matcher.
Scala case classes feature in Scala REPL
Following is a Scala case classes feature in Scala REPL:
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_77).
Type in expressions for evaluation. Or try :help.
scala>case class Person(name: String, age: Int)
defined class Person
scala>val p = Person("Diego",31)
p: Person = Person(Diego,31)
scala>val p2 = Person("Diego",32)
p2: Person = Person(Diego,32)
res0: String = Diego
res1: Int = 31
scala>p == p
res2: Boolean = true
res3: String = Person(Diego,31)
res4: Int = 668670772
res5: Boolean = false
res6: Boolean = true
This is the Scala way to work with classes. Because this is so much easier and compact, you pretty much create a class with one line of code, and you can have the equals and hashcode methods for free.
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