Iterators in Go are a neat way to write “lazy loops”, where we never generate more results than we actually use. Let’s see what that would look like in Go programs, and what new facilities it gives us in the standard library.
All tagged maps
Generics in action: a set type in Go
To celebrate the first anniversary of generics in Go, let’s build something practical and useful: a generic Set type, and add some neat methods to it. Ready for fun?
Are you a Go black belt? What does mastery look like?
Are you a grasshopper or a Go sensei? Can you wax on, wax off? Go mentor and would-be Mr Miyagi, John Arundel, explains how he grades his students using a system of coloured belts like those used in the martial arts. Find out how your skills compare to typical junior, mid-level, and senior devs!
![map[string]interface{} in Go](https://images.squarespace-cdn.com/content/v1/5e10bdc20efb8f0d169f85f9/1591464680043-WPLK1CDNHHUE6PO8F7QE/jet-pack.png)
map[string]interface{} in Go
What is a map[string]interface{} or map[string]any in Go, and why is it so useful? How do we deal with maps of string to interface{} in our programs? What the heck is an interface{}, anyway?
Iterating over a Golang map
How do you iterate over Golang maps? How do you print a map? How do you write a for loop that executes for each key and value in a map? What is the iteration order of Go maps? Let's find out, in this practical, easy-to-follow tutorial.