A variable can be considered in two parts. First its name, for instanceaand then its value, for instance,12.
In Scala, a variable also has a type, for instance,Intwhen it is an integer.
We assigned a value to the Valuea.
- The line 3 is the value
- The line 5 is doing a sum of the integer
2and the valuea - On line 7, we see
assertwhich perform a test if the sum above is equal to8
Also, important things to keep in mind,valare immutable. In Scala, if you want a mutable variable, you would have to use the keywordvar.
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