Book: The Complete Guide to Go Programming Also by me: Thinking in Go (2-book series) — Complete Guide to Go Programming + Hexagonal Architecture in Go My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com | GitHub Open the config loader of any Go service older than two years. You'll find this: port := os . Getenv ( "APP_PORT" ) if port == "" { port = cfg . Port } if port == "" { port = "8080" } Enter fullscreen mode Exit fullscreen mode Or this, on the sort path: sort . Slice ( orders , func ( i , j int ) bool { if orders [ i ] . CreatedAt . Equal ( orders [ j ] . CreatedAt ) { return orders [ i ] . ID < orders [ j ] . ID } return orders [ i ] . CreatedAt . After ( orders [ j ] . CreatedAt ) }) Enter fullscreen mode Exit fullscreen mode Both shapes work. Both are the kind of thing a code reviewer skims past because the alternative used to be worse. Then Go 1.21 shipped the cmp package with cmp.Compare and cmp.Less .…