The Go package Keyword: package main, Naming Rules and Examples
Every Go file starts with a package clause. Learn what package main does, how package names map to directories and import paths, and Go's naming rules.
Patrik Nilsson
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Go programming tutorials, tips, and news from LevelUpGo
Go Keywords: All 25 Reserved Words Explained
Go has 25 keywords, unchanged since Go 1.0. See what each Go keyword does with a real example, plus predeclared names like any and len that are not keywords.
Patrik Nilsson
Where Is Go Used? Companies, Industries and Use Cases (2026)
Where is Go used? Cloud infrastructure, backend APIs, banking, databases and CLIs. See which companies run Go in 2026 and where it is not the usual pick.
Patrik Nilsson
Best Programming Language for Backend Development in 2026
Go is the best programming language for backend development in 2026, and 11% of developers plan to adopt it next (JetBrains). See how 7 languages compare.
Patrik Nilsson
Should You Still Write Code by Hand? When It Beats AI in 2026
AI can write most of your code in 2026. The research says there are still times to type it yourself: when you're learning, when you'll have to debug it, and when a mistake would cost real money.
Patrik Nilsson
What's New in Go 1.27: A Complete Guide
Go 1.27 ships generic methods, a stdlib uuid package, and json/v2 as the default engine. Here's what to adopt now, and what quietly breaks on upgrade.
Patrik Nilsson
var vs make in Go: When to Use Each (with Examples)
var gives you the zero value, and make initializes slices, maps, and channels. When to use each in Go, and why writing to a nil map panics while appending to a nil slice does not.
Patrik Nilsson
Why You Should Migrate From PHP to Go
PHP ties up a whole worker for every request, while a single Go process can hold thousands of connections at once. That difference in how the two handle concurrency is the real reason teams migrate, and you can move one service at a time instead of rewriting everything.
Patrik Nilsson
How to Structure a Go Project (2026): Idiomatic Layout Guide
The folder layout most beginners copy from a 50k-star repo is not an official Go standard, and the Go team says so. Here is the real, official approach to structuring a Go project, which is simpler than you expect.
Patrik Nilsson
Is Go Worth Learning in 2026?
Yes. Go is worth learning in 2026: a large hiring market, the dominant cloud-native stack, a gentle learning curve, and salaries clustering around $120K-$135K. Here is the honest case, with primary sources, and when Go is not the right pick.
Patrik Nilsson