Notepad/enter/Coding Tips (Classical)/Terminal Tips/Languages/Go/Welcome to Go.md

# Go Programming Language  

For a great textbook to learn Go, read [this textbook by Donovan & Kernighan](https://drive.google.com/file/d/1-n9s6Qc0JYdQHz86GbUTaJ_j3Fzp7IE7/view?usp=sharing)

Additionally all the commands and additional settings for flags [are found  here. ](https://pkg.go.dev/cmd/go)
Why learn Go? Well, their entire [webpage](https://go.dev/solutions/#case-studies) that explained literally that exact question may have had something to do with it. And I saw a youtube video yesterday saying how it was better than Rust, the literal most "loved" language currently in terms of long-term performance. So both of those two things got me sold. 

They have a rather intuitive  learning module called [The Go Playground ](https://go.dev/play/)which makes it actually desirable to learn even. 

```
// You can edit this code!
// Click here and start typing.
package main

import "fmt"

func main() {
	fmt.Println("Hello, 世界")
}

```

And tons more examples to  try and out and learn from such as [Conway's Game of  Life](https://go.dev/play/) and more. 

This is how a fibonacci sequence could be implemented: 

```

package main

import "fmt"

// fib returns a function that returns
// successive Fibonacci numbers.
func fib() func() int {
	a, b := 0, 1
	return func() int {
		a, b = b, a+b
		return a
	}
}

func main() {
	f := fib()
	// Function calls are evaluated left-to-right.
	fmt.Println(f(), f(), f(), f(), f())
}

```
With the output being: 1 1 2 3 5

When actually looking at it,  it's kinda cool. It's not actually hard recursion like  the way that it seemed  like before with lisp. 


Go Terms: 


- A **Module** 
	- A module is a collection of [Go packages](https://go.dev/ref/spec#Packages) stored in a file tree with a `go.mod` file at its root. The `go.mod` file defines the module’s _module path_, which is also the import path used for the root directory, and its _dependency requirements_, which are the other modules needed for a successful build. Each dependency requirement is written as a module path and a specific [semantic version](http://semver.org/).
	- To see examples of how to set up Go modules, visit [here](https://go.dev/blog/using-go-modules). 
	- Another github example of using[ Go module conventions](https://github.com/amitsaha/using-go-modules)