[solved ]Sharing stuff between packages

[ornate helm]

So i have a main.go and a folder called other with a mod.go how do I share functions and stuff between these?

// main.go
package main

import (
    "fmt"

    _ "barrybtw.com/package-test/other"
)

func main() {
    fmt.Println("Hello, playground")

    mainother()
}

// other/mod.go
package other

import (
    "fmt"
)

func mainother() {
    fmt.Println("Hello, playground")
}

This doesn't work and I'm not sure why