How is Val different from var in Scala?

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Can anyone explain how is Val different from var in Scala?
Jul 24 in Apache Spark by Ujwal
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1 answer to this question.

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Hey,

In this language, val is a value and var is a variable. These are two different keywords for declaring immutable and mutable entities respectively. This means that you can always reassign a var, but trying to do that to a val makes the compiler throw an error. 

scala> val c=7

c: Int = 7

scala> c=8

<console>:19: error: reassignment to val

c=8



l

a> var c=7

c: Int =


l

a> c=8

c: Int = 8
answered Jul 24 by Gitika
• 25,340 points

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