61 lines
2.3 KiB
Markdown
61 lines
2.3 KiB
Markdown
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# Go Programming Language
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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)
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Additionally all the commands and additional settings for flags [are found here. ](https://pkg.go.dev/cmd/go)
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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.
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They have a rather intuitive learning module called [The Go Playground ](https://go.dev/play/)which makes it actually desirable to learn even.
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```
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// You can edit this code!
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// Click here and start typing.
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package main
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import "fmt"
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func main() {
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fmt.Println("Hello, 世界")
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}
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```
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And tons more examples to try and out and learn from such as [Conway's Game of Life](https://go.dev/play/) and more.
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This is how a fibonacci sequence could be implemented:
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```
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package main
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import "fmt"
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// fib returns a function that returns
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// successive Fibonacci numbers.
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func fib() func() int {
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a, b := 0, 1
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return func() int {
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a, b = b, a+b
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return a
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}
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}
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func main() {
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f := fib()
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// Function calls are evaluated left-to-right.
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fmt.Println(f(), f(), f(), f(), f())
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}
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```
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With the output being: 1 1 2 3 5
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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.
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Go Terms:
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- A **Module**
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- 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/).
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- To see examples of how to set up Go modules, visit [here](https://go.dev/blog/using-go-modules).
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- Another github example of using[ Go module conventions](https://github.com/amitsaha/using-go-modules)
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