a-kumar5 / golang-learn Goto Github PK

Initiate the go application go mod init <module path> This creates a new module

• Initialized a go.mod file
• go.mod describes the module: with name/modulepath and go version used in the program
• The module path is also the import path

All our code must belong to a package

• The first statement in Go file must be "package ..."

Where to start the program? Where is the entrypoint? Go program needs.

func main() {
    Print("Hello World")
}

you can have only one main function in a go program.

to use Print or any other functions, we need to import some inbuild packages.

• Go programs are organized into packages
• Go's standard library, provides different core packages for us to use
• "fmt" is one of these, which you can use by importing it.

import "fmt"

to execute the program go run main.go

Go compile errors to enforce better code qualit. ex - Variables names must be used.

• To avoid possible dead code, code that is never used in the code

Defining variables - var conferenceName = "Go Conference"

Defininf constant - const conferenceTickets = 50