Variadic Functions in Go

Go does not have optional parameters, but you can use variadic functions to create the same affect. We cover to simple examples to demonstrate the syntax.

First we create a sum() function to add "n" number of integers together.

Then we create a grocery purchasing script and pass items with optional discounts. Items without discount can be passed to the same function as items that include a discount, and the function will do the calculation for you. ... https://www.youtube.com/watch?v=nBE1CSqtAYg