kotlin varargs code example

Example 1: kotlin var val

+----------------+-----------------------------+---------------------------+
|                |             val             |            var            |
+----------------+-----------------------------+---------------------------+
| Reference type | Immutable (once initialized | Mutable (can change value)|
|                | can't be reassigned)        |                           |
+----------------+-----------------------------+---------------------------+
| Example        | val n = 20                  | var n = 20                |
|				 | n++						   |                           |
+----------------+-----------------------------+---------------------------+

Example 2: kotlin var and val

val declares a read-only property, var a mutable one