Kotlin Programming Cookbook

Parsing string to Long with special radix

In the preceding examples, we were parsing strings with radix 10, that is, decimals. By default, the radix is taken as 10, but there are certain situations where we need different radix. For example, in case of parsing a string into a binary or octal number. So now, we will see how to work with radix other than the decimal. Though you can use any valid radix, we will show examples that are most commonly used, such as binary and octal.

• Binary: Since a binary number is made from 0 and 1, the radix used is 2:

fun main(args: Array<String>) {       val str="11111111"       print(str.toLongOrNull(2))   }

On running the preceding program, the following output is generated:

 255

• Octal: The octal numeral system, or oct ...