GO => open-source programming language by Google
Simplicity, Clarity, Scalability, High Performance, Concurrency, built-in standard library, static typing
Networking, APIs, Microservices, CLI tools
Go => compiled language
file extension => .go
go run file.go
each file needs to have under a package
main => main entry point
module => multiple packages
go mod init path
go build
main function will be called when program is started
don't have two main functions in different files under same main packages
variable => var variableName
operators => +, *, /
types => int, float64
can't mixed different types since static types
int to float => float64(int)
Println => new line
go run . => run module
go can infer type of values
explicit type assignment => int, float64, string, bool
:= => declare + assign + infer => convention
multiple variable declaration and assignment in one line but cannot add multiple type assignments
constant => const
go formatter settings
"[go]": {
"editor.insertSpaces": true,
"editor.formatOnSave": true,
"editor.defaultFormatter": "golang.go"
}user console input => fmt.Scan(&variable)