Idioms & ecosystem

defer fn() schedules fn to run when the surrounding function returns. The closest TS analogue is a try/finally you don't have to indent. Multiple defers run LIFO. **Arguments…

Struct embedding gives you composition without inheritance. Embed a type as an unnamed field and its methods get promoted onto the outer struct. This is how Go does "extend a type"…

context.Context propagates cancellation, deadlines, and request-scoped values across goroutines and API boundaries. By convention, the first argument of any function that does I/…

Go has a testing package in the standard library. Tests live next to code in _test.go files. The pattern is table-driven: a slice of (name, input, want) tuples plus `t.Run(…

io.Reader { Read(p []byte) (n int, err error) }. One method. Go interfaces are typically tiny because implicit satisfaction rewards it — small interfaces are easy to satisfy acci…

cmd/<binary-name>/main.go per binary; internal/... for packages that should not be importable by other modules. Outside those two conventions, layout is up to you. The `golang-…

The "what bit me in code review" survival kit: - Loop variable capture (Go 1.22+ helped, but you should still know). - Nil interface vs nil concrete (a non-nil pointer inside an…