go build -> Compiles a bunch of go source code files (Compiles .go to .exe)
go run -> Compiles and executes one or two files
go fmt -> Formats all the code in each file in the current directory
go install -> Compiles and installs a package
go get -> Downloads the raw source code of someone else's packages
go test -> Runs any tests associated with the current project
Package is scope of the code. (Package == Project == Workspace). A package contains many files which work together for similar purpose.
Go has 2 types of Packages
- Executable -> Generates a executable file that we use for running application.
Package main is a executable package and need func main() inside it. If we use other package instead of main, nothing is going to come out when run go build. - Reusable -> Code used as 'helper' or 'dependency'. Good place to put reusable logic.
- Value -> int, float, string, bool, array, struct
- Reference -> slices, maps, function, pointer, channel