Golang Runtime and Ecosystem

1. Read about how to get rid of $GOPATH in your projects using Go modules
2. A brief walk-through a useful features of Go toolchain. 5 Helpful utilities in Go toolchain

---

1. Video. Keith Randall - Inside the Map Implementation

2. Video. Francesc Campoy - Understanding nil

3. Go's work-stealing scheduler

4. In your kottans-backend repo README.md:

   5.1 add header ## Golang Runtime and Ecosystem

   5.2 add answers to the following questions:

   • What value types are invalid for use as go map keys and why ?
   • Will this code compile ? Why ?

   package main
   
   func nil() {
       print("Oh Yeah!\n")
   }
   
   func main() {
       if nil == nil {
           print("Its equal\n")
       }
   }
   

   • What's the output of following code ?

   package main
   
   type customError struct{
       text string
   }
   
   func (e *customError) Error() string {
       return e.text
   }
   
   func getErrorText(err error) (text string) {
        if err != nil {
            text = err.Error()
        }
        return
   }
   
   func main() {
       var err *customError
       println(getErrorText(err))
   }
   

   • Why nil check is not working ? How would we fix that ?

Extra materials

1. Async IO on Linux: select, poll, and epoll
2. Go: the Good, the Bad and the Ugly
3. Golang Internals Resources
4. Hacking Go's internals by Bouke van der Bijl

Done?

➡️ Go forward to Databases

⤴️ Back to Contents