Lambadas in kotlin programming language

Lambadas are similar to arrow functions in JavaScript they are a short alternative method to declare functions in kotlin programing language, You can create a function expression as;

val double = {num: Int -> num * 2}

val cube = { num: Int -> num * num * num}

val square = {num: Int ->
    val product = num * num
    product }

The last expression in a lambada is considered as a return value;

Parameters can be omitted, for a single parameter lambada the value of the omitted parameter is in the variable 'it'