[kstenerud]

I maintain a modified compiler (https://github.com/kstenerud/go/blob/master/README.md#the-go...) that can issue warnings instead for unused things.

I use it as my daily driver for go development.

main.go:

    package main

    import "fmt"

    func main() {
        var start int = 1

        breakOuter:
        // for x := start; x < 10; x++ {
        for x := 3; x < 10; x++ {
            for y := 0; y < 10; y++ {
                result := y * 10 + x
                // fmt.Printf("Result: %d\n", result)
                // if result == 42 {
                //  fmt.Printf("Breaking")
                //  break breakOuter
                // }
            }
        }
    }

Building:

    $ go build
     # example
     ./main.go:3:8: imported and not used: "fmt"
     ./main.go:8:5: label breakOuter defined and not used
    (compilation fails)

    $ go build -gcflags=-warnunused
     # example
     ./main.go:8:5: Warning: label breakOuter defined and not used
     ./main.go:3:8: Warning: imported and not used: "fmt"
     ./main.go:6:9: Warning: start declared and not used
     ./main.go:12:13: Warning: result declared and not used
    (compilation succeeds)

[rat9988]

That's cool! It is so annoying to just try to try something fast, and then the compiler stops you...