CODEWITHSUNDEEP
gogo-modules
John Smith
John Smith

Reputation: 41

Creating a project with Go modules

I'm trying to understand Go modules and create a simple hello world program. Go version: 1.16.2

/project1
/project1/main.go
/project1/helpers/helpers.go

helpers.go will contain some utility method like:

package ???

import "fmt"

func DoSomething() {
  fmt.Println("Doing something in helpers.go")
}

main.go will use methods from helpers.go like this:

package main

import "??"

func main() {
  helpers.DoSomething()
}

VSCode is not allowing me to do this and has a red underline on helpers.

What am I missing here? How can I achieve this?

Edit 1: Adding go.mod and package names:

So I ran go mod init helpers in /helpers folder and came out with this:

/project1/helpers/helpers.go
/project1/helpers/go.mod

go.mod

module helpers

go 1.16

My main.go now looks like this:

package main

import (
    "fmt"
    "helpers"
)

func main() {
    fmt.Println("blah")
    helpers.DoHelperMethod()
}

Upvotes: 1

Views: 3573

Answers (2)

Dhruv Sharma
Dhruv Sharma

Reputation: 1

In case if you want to create new module follow below steps:

  1. first create folder

mkdir newPackage

  1. go into that folder

cd newPackage

  1. Create mod init

go mod init example.com/mypackage

Example

Upvotes: 0

mkopriva
mkopriva

Reputation: 38223

Your project should have only one go.mod file and it should be in the root of the project. You can cd into the project's directory and do go mod init <module_name> where <module_name> in your case can be project1.

For example, once you've initialized the module, your project should look something like the following:

/project1/helpers/helpers.go
/project1/main.go
/project1/go.mod

go.mod

module project1

go 1.16

main.go

package main

import "project1/helpers"

func main() { helpers.DoHelperMethod() }

helpers/helpers.go

package helpers

func DoHelperMethod() {
    // ...
}

Upvotes: 6

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