Henry Brown hgbrown

hgbrown / danger-will-robinson.kts

Created October 27, 2018 04:21

Demonstrates the dangers of mutability in Kotlin. Why you should prefer val to var

	#!/usr/bin/env kscript
	var factor = 2

	fun doubleIt(n: Int) = n * factor
	var message = "The factor is $factor"

	factor = 0

	println(doubleIt(2))
	println(message)

hgbrown / LimitingScopeOfVariables.kt

Created August 27, 2019 11:20

Demonstrates the importance of limiting the scope of variables to the smallest possible scope.

	package dev.hbrown

	/**
	* Demonstrates the importance of limiting the scope of a variable using the Sieve of Eratosthenes to find prime numbers
	* using a sequence builder. The algorithm is conceptually very easy:
	*
	* 1. take a list of numbers starting at 2.
	* 2. remove the first number, it is prime.
	* 3. from the rest of the numbers, remove the first number as well as all the numbers divisible by this prime number.
	*