gophers VS crates.io

fn get_gopher(gopher: String) -> Result { println!("Try to get {} Gopher...", gopher); let url = format!("https://github.com/scraly/gophers/raw/main/{}.png", gopher); let response = minreq::get(url) .send() .expect("Fail to get response from server"); if response.status_code == 200 { let file_name = format!("{}.png", gopher); let mut output_file = File::create(&file_name).expect("Fail to create file"); output_file .write_all(response.as_bytes()) .expect("Fail to write file"); Ok(format!("Perfect! Just saved in {}", &file_name)) } else { Err(Error::GopherNotFound(format!( "Gopher {} not exists", gopher ))) } }

use std::fs::File; use std::io::stdout; use std::io::Write; use structopt::clap::{crate_name, crate_version, Shell}; use structopt::StructOpt; #[derive(StructOpt, Debug)] #[structopt(name = "rust-gopher-friend-cli", version = crate_version!(), about = "Gopher CLI application written in Rust.")] enum Command { /// This command will get the desired Gopher Get { /// Gopher type #[structopt()] gopher: String, }, /// Generate completion script Completion { /// Shell type #[structopt(possible_values = &["bash", "fish", "zsh", "powershell", "elvish"])] shell: Shell, }, } fn get_gopher(gopher: String) { println!("Try to get {} Gopher...", gopher); let url = format!("https://github.com/scraly/gophers/raw/main/{}.png", gopher); let response = minreq::get(url) .send() .expect("Fail to get response from server"); if response.status_code == 200 { let file_name = format!("{}.png", gopher); let mut output_file = File::create(&file_name).expect("Fail to create file"); output_file .write_all(response.as_bytes()) .expect("Fail to write file"); println!("Perfect! Just saved in {}", &file_name); } else { eprintln!("Gopher {} not exists", gopher); } } fn main() { let cmd = Command::from_args(); match cmd { Command::Get { gopher } => get_gopher(gopher), Command::Completion { shell } => { Command::clap().gen_completions_to(crate_name!(), shell, &mut stdout()) } } }

var getCmd = &cobra.Command{ Use: "get", Short: "This command will get the desired Gopher", Long: `This get command will call GitHub respository in order to return the desired Gopher.`, Run: func(cmd *cobra.Command, args []string) { var gopherName = "dr-who.png" if len(args) >= 1 && args[0] != "" { gopherName = args[0] } URL := "https://github.com/scraly/gophers/raw/main/" + gopherName + ".png" fmt.Println("Try to get '" + gopherName + "' Gopher...") // Get the data response, err := http.Get(URL) if err != nil { fmt.Println(err) } defer response.Body.Close() if response.StatusCode == 200 { // Create the file out, err := os.Create(gopherName + ".png") if err != nil { fmt.Println(err) } defer out.Close() // Writer the body to file _, err = io.Copy(out, response.Body) if err != nil { fmt.Println(err) } fmt.Println("Perfect! Just saved in " + out.Name() + "!") } else { fmt.Println("Error: " + gopherName + " not exists! :-(") } }, }

package main import ( "fmt" "log" "net/http" "github.com/go-openapi/loads" "github.com/go-openapi/runtime/middleware" "github.com/scraly/learning-go-by-examples/go-rest-api/pkg/swagger/server/restapi" "github.com/scraly/learning-go-by-examples/go-rest-api/pkg/swagger/server/restapi/operations" ) func main() { // Initialize Swagger swaggerSpec, err := loads.Analyzed(restapi.SwaggerJSON, "") if err != nil { log.Fatalln(err) } api := operations.NewHelloAPIAPI(swaggerSpec) server := restapi.NewServer(api) defer func() { if err := server.Shutdown(); err != nil { // error handle log.Fatalln(err) } }() server.Port = 8080 api.CheckHealthHandler = operations.CheckHealthHandlerFunc(Health) api.GetHelloUserHandler = operations.GetHelloUserHandlerFunc(GetHelloUser) api.GetGopherNameHandler = operations.GetGopherNameHandlerFunc(GetGopherByName) // Start server which listening if err := server.Serve(); err != nil { log.Fatalln(err) } } //Health route returns OK func Health(operations.CheckHealthParams) middleware.Responder { return operations.NewCheckHealthOK().WithPayload("OK") } //GetHelloUser returns Hello + your name func GetHelloUser(user operations.GetHelloUserParams) middleware.Responder { return operations.NewGetHelloUserOK().WithPayload("Hello " + user.User + "!") } //GetGopherByName returns a gopher in png func GetGopherByName(gopher operations.GetGopherNameParams) middleware.Responder { var URL string if gopher.Name != "" { URL = "https://github.com/scraly/gophers/raw/main/" + gopher.Name + ".png" } else { //by default we return dr who gopher URL = "https://github.com/scraly/gophers/raw/main/dr-who.png" } response, err := http.Get(URL) if err != nil { fmt.Println("error") } return operations.NewGetGopherNameOK().WithPayload(response.Body) }

Rust has a rich ecosystem of frameworks and libraries that let you read, parse, and manipulate text files, interact with cloud services and databases, and perform any other job that your project's development workflow may require. And because of its strong typing and tight memory management, you are much less likely to write programs that behave unexpectedly in production.

All the code discussed in this article can be accessed through this repository. For integration with existing projects consider using keyword_extraction crate available on crates.io.

So, be sure to double-check your critical libraries and be sure their alternatives exist in the Rust ecosystem. There’s a good chance the crates you need are available in Rust's crates.io repository.

The previous section was very simple, this section is also very simple but introduces us to cargo which is Rust's package manager, as a JS dev my mind goes straight to NPM.

Now, there has to be a place where all these packages come from. Similar to npmjs registry, where all node packages are registered, stored and retrieved, Rust also has something called crates.io where many helpful packages and dependencies are registered.

Before proceeding, let's check https://crates.io/, the official Rust package registry.

The most thrilling aspect has been the joy of writing the backend. It's like every struct, enum, and method in Rust forms this interconnected Multiverse of code , which you can see in crates.io which is best Documentation experience I Ever Had.

5. Crates.io

When using crates from eg. crates.io, and also things like std and core

Vendoring your packages was very tedious to even remotely get to work with Cargo. I spent a very long time getting Cargo to work together with cargo-local-registry. We vendor crates from crates.io and a custom internal registry.