go-lab¶

go-lab go¶

Run some basic code¶

cd basics
go run . 
go run greet

Call an external function..¶

Go to https://go.dev/ and pick a module/package for using
Change code to import module and use it        
If we try running "go run ." then it fails
Create a go.mod file that acts a requirement/dependency file. Without this, external modules do not get downlaoded.
    go mod init greet
    go run greet

Create a module and call it externally¶

Create a new module
    cd greeting
    go run greeting.com/greeting
Call it in basics/greet.go
    cd basics
Modify greet.go to call greeting.Hello(<input>)
Modify basics/go.mod to apply "replace greeting.com/greeting => ../greeting"
    go run greet

Create executable using build¶

    cd basics
    go build
    ./greet

Learnings so far...¶

Packages are published in modules. We hence have to import modules..