Hands-On Object-Oriented Programming with Kotlin

Types of ranges

Kotlin provides three different types of ranges: integer, long, and character. Each range can be declared with explicit type declaration:

val myIntRange : IntRange = 1..10val myLongRange : LongRange = 1..10Lval myCharRange : CharRange = 'a'..'z'for (ch in myCharRange) {    println(ch)}

Like other variables, a range can also be declared without explicitly declaring the variable type:

val IntRange = 1..10val LongRange = 1..10Lval CharRange = 'a'..'z'for (ch in myCharRange) {     println(ch)}

While declaring a range of long type, it is necessary to provide the L character with at least one of the elements to differentiate it from the integer type of range.