> One last thing with error handling. Everybody does if err!=nil. I tend to go the opposite way, if err==nil and nest these, if err isn't nil i drop out and deal with the error. If it is ok, it will return ok.

Don't you get "staircase of doom"?

    err := unsafe1()
    if err == nil {
        err = unsafe2()
        if err == nil {
            err = unsafe3()
            if err == nil {
                err = unsafe4()
                    if err == nil {
                    err = unsafe5()
                    if err == nil {
                        // ...
                    }
                }
            }
        }
    }