Go Language Modularization
External
Internal
Overview
A standard organization of the files that are part of a project makes easier to share code with other people who also use the same standard. Go workspaces encourage such a standard.
Overview
Workspaces
The standard workspace layout is:
. ├─ src ├─ pkg └─ bin
This layout is recommended, but not enforced.
A workspace may contain multiple projects.
Define the relationship between workspace and the GOPATH
variable.
Project
Packages
A package is a group of related source files. A package can be imported by other packages. Always, there must be one package called main
, which produces an executable as result of its compilation. Other packages do not produce executables as result of their compilation.
Declaring Packages
The main Package
The main
package produces an executable as result of its compilation. The main
package must have a function called main()
, which is where the code execution starts.
package main
import "fmt"
func main() {
fmt.Printf("hello\n")
}
Importing Packages
Dependencies
Vendoring
"Vendoring" is the act of making a local copy of a third party package your project depends on. This copy is traditionally placed inside each project and then saved in the project repository.
TODO
Deplete, merge into this document and delete:
- Go Concepts - Packages
- Go Concepts - Dependency Handling
- Go Concepts - Standard Library
- Go Concepts - Runtime