In today's article, we will experiment with generics in Go, and their latest form, Type Parameters. Before we start, let's take a quick look at the proposal's history. History of generics in Go Generics have been some of the most desired language features since Go's inception. While the Go team never explicitly rejected them, they also did not have a good way to solve the problem of introducing generics to the language without making Go look and feel less Go-like. That was until August 2018, when the Go team introduced the notion of Contracts and started a big discussion with the community abo

Early access build #7 for GoLand 2020.3 is here with support for square brackets in type parameters. Play with it and share your thoughts! Remember that you don’t need to wait for the official EAP announcements, as we regularly release nightly builds based on the latest development code. These nightly builds are only available via the Toolbox App. You can get this EAP build through the Toolbox App, by downloading it from the website, or by using a snap package (for Ubuntu). Or update from right inside GoLand by selecting Automatically check updates for Early Access Program in Preferences / Se

Looking back at constructor type parameters folding, you may wonder why don't we fold another verbose construct with generics — method type parameters like this:fillMap(Collections.<String, List<Integer>>emptyMap());In Maia, we will:

Aren't you tired of verbose constructs like this, are you? For years IntelliJ IDEA has been saving your time spent on writing code like this (Smart Type Completion after new keyword). Now it does so with your brain cycles while you're reading it: This new folding will be available in the first Maia EAP.