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+# Workshop golang HAN ESE jan '23
+
+
+Tekst wat de workshop inhoud:
+- Wat ga ik doen
+- Verwachting als ze geweest zijn
+- Wat moeten ze meenemen
+
+Workshop inhoud:
+
+```
+"Writing a tcp server for embedded devices in Golang within hours"
+
+Course time schedule (50 min)
+
+- 10 min: About myself, the company I work for and Golang introduction
+- 5 min: Exercise explanation
+- 30 min: Golang hands-on with support from me (2 persons per exercise)
+- 5 min: The outcome and questions
+
+Bring a laptop with a browser and wifi. The Google Chrome browser is preferred. 
+```
+
+
+## Slides
+
+- https://pkg.go.dev/golang.org/x/tools/present
+
+
+### Interesting packages
+
+- buffer
+- net
+- io
+
+### Golang online playground
+
+- https://goplay.tools/ has working `net` (officieel https://go.dev/play>)
+
+## Functional Options Pattern in Golang
+
+<https://michalzalecki.com/golang-options-pattern/>
+<https://petomalina.medium.com/dealing-with-optional-parameters-in-go-9780f9bfbd1d>
+<https://www.sohamkamani.com/golang/options-pattern/>
+
+Normaly you would fill in many parameters or pass a struct with many knobs to turn. The Optional Function Parameter Pattern in Golang deals in a unique way
+with module parameters which can be added and removed without extending the type
+with extra setter and getter functions. As options is a type they can be passed in as a slice.
+
+### Excercise
+
+### The net package
+
+For cross platform TCP/UDP/UNIX network socket access. From the builtin
+`net` package.
+
+- <https://pkg.go.dev/net@go1.19.3>
+
+### The show must go on ...
+
+Good Golang content to keep the ball rolling 
+
+- [A Tour of go](https://go.dev/tour)
+- [The Go Blog](https://go.dev/blog/)
+- [Go talks (slides)](https://go.dev/talks/)
+- [Go by Example](https://gobyexample.com/)
+- [Yourbasic.com Golang](https://yourbasic.org/golang)
+- [Golang Weekly Newsletter](https://golangweekly.com/issues)
+- [Gopher Academy Youtube](https://www.youtube.com/c/GopherAcademy)
+- [justforfunc: Programming in Go youtube](https://www.youtube.com/c/justforfunc) ([github](https://github.com/campoy/justforfunc))
+
+## Opdracht
+
+- Zorg dat het programma na 16 client handlings afsluit als alle processing klaar is 
+
+## TODO & Braindump
+
+- Programming Golang since 2016
+- Zet oefening met sharelink op <https://goplay.tools/snippet/XOM0c7Dp0YD>
+- Running opensource project Syncthing macOS
+- Check if firefox also works with https://go.dev/play/ 
+- Golang uses composition for OO-like system instead of polymorphism which is easier to read and write
+- GOlang has an interface type builtin to the language (e.g io.Reader)
+- `cmd` package is special where executables are
+- Multiple return values
+- Variables are ALWAYS initialised (for safety)
+- Slices to keep things together (len, cap, size)
+- Public/private no keyword but by contract (highercase is public, lowercase private)