Go is a faster C++ like language which can be either interpretted or compiled. We will teach you Go language in seven days (chapters).
- A GoLang playground link
- We will use docker container for the run time enviroment.
- Write a docker file from official image
- Build image
docker build -t golang-app1 . - Run it
docker run -it --rm -v /home/alex/projects/golang/day1/:/go/src/app/day1/ --name golang-running-app1 golang-app1 - For web.go run
docker run -it --rm -v /home/alex/projects/golang/day2/:/go/src/app/day2/ -p 3300:3300 --name golang-running-app1 golang-app1 - You will enter in the container shell, type
go version - Check go environment variables
go env
- Hello world app
main.go
- These are the data types in go
string
bool
int int8 int16 int32 int64
uint uint8 uint16 uint32 uint84
byte - alias for uint8
rune - alias for int32
float32 float64
complex64 complex128
- import keyword is used to import a package
- Similar to other programming languages
- Can pass by value or ref
- Collections of similar data types, 0 indexed
- Can slice like in python arr[start: stop]
- Its syntax is different
rolls := [2]int{1,2}
- Similar to other programming languages
- For loop can be used as either while or for
- It is like an associative array
- Iterate over using
rangekeyword - Its syntax is very different
emails := map[string]string{"name":"em@il.com"}
- This is the most interesting and useful topic in Golang
- A data struture declaration
- Like struct but it can contain method declarations
- Defines method signature
- In go there is no obvious relationship/implementation of interface
- The relationship is only visible/checked when you pass a struct (with same method as interface declares) to a method expecting a similar interface as parameter.