Roberta  Ward

Roberta Ward

1595806965

QuickStart: CRUD Operations in Rust

This Quick Start post will help you connect your Rust application to a MongoDB cluster. It will then show you how to do Create, Read, Update, and Delete (CRUD) operations on a collection. Finally, it’ll cover how to use serde to map between MongoDB’s BSON documents and Rust structs.

Series Tools & Versions

This series assumes that you have a recent version of the Rust toolchain installed (v1.44+), and that you’re comfortable with Rust syntax. It also assumes that you’re reasonably comfortable using the command-line and your favourite code editor.

Rust is a powerful systems programming language with high performance and low memory usage which is suitable for a wide variety of tasks. Although currently a niche language for working with data, its popularity is quickly rising!

If you use Rust and want to work with MongoDB, this blog series is the place to start! I’m going to show you how to do the following:

  • Install the MongoDB Rust driver. The Rust driver is the mongodb crate which allows you to communicate with a MongoDB cluster.
  • Connect to a MongoDB instance.
  • Create, Read, Update & Delete (CRUD) documents in your database.

Later blog posts in the series will cover things like Change StreamsTransactions and the amazing Aggregation Pipeline feature which allows you to run advanced queries on your data.

Prerequisites

I’m going to assume you have a working knowledge of Rust. I won’t use any complex Rust code - this is a MongoDB tutorial, not a Rust tutorial - but you’ll want to know the basics of error-handling and borrowing in Rust, at least! You may want to run rustup update if you haven’t since March 2020 because I’ll be working with a recent release.

You’ll need the following:

  • An up-to-date Rust toolchain, version 1.44+. I recommend you install it with Rustup if you haven’t already.
  • A code editor of your choice. I recommend either IntelliJ Rust or the free VS Code with the official Rust plugin

The MongoDB Rust driver uses Tokio by default - and this tutorial will do that too. If you’re interested in running under async-std, or synchronously, the changes are straightforward. I’ll cover them at the end

Creating your database

You’ll use MongoDB Atlas to host a MongoDB cluster, so you don’t need to worry about how to configure MongoDB itself.

Get started with an M0 cluster on Atlas. It’s free forever, and it’s the easiest way to try out the steps in this blog series. You won’t even need to provide payment details.

You’ll need to create a new cluster and load it with sample data My awesome colleague Maxime Beugnet has created a video tutorial to help you out, but I also explain the steps below:

  • Click “Start free” on the MongoDB homepage.
  • Enter your details, or just sign up with your Google account, if you have one.
  • Accept the Terms of Service
  • Create a Starter cluster.
  • Select the same cloud provider you’re used to, or just leave it as-is. Pick a region that makes sense for you.
  • You can change the name of the cluster if you like. I’ve called mine “RustQuickstart”.

It will take a couple of minutes for your cluster to be provisioned, so while you’re waiting you can move on to the next step.

Starting your project

In your terminal, change to the directory where you keep your coding projects and run the following command:

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cargo new --bin rust_quickstart

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This will create a new directory called rust_quickstart containing a new, nearly-empty project. In the directory, open Cargo.toml and change the [dependencies] section so it looks like this:

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[dependencies]
mongodb = "1.0.0"

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Now you can download and build the dependencies by running:

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cargo run

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You should see lots of dependencies downloaded and compiled. Don’t worry, most of this only happens the first time you run it! At the end, if everything went well, it should print “Hello, World!” in your console.

#mongodb

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QuickStart: CRUD Operations in Rust
Sigrid  Farrell

Sigrid Farrell

1624096385

Spring Boot CRUD Operations

In the video in this article, we take a closer look at the Spring Boot CRUD Operations Example alongside Exception Handling!

In the video below, we take a closer look at the Spring Boot CRUD Operations example with exception handling. Let’s get started!

#spring boot #spring boot tutorial for beginners #crud #crud #crud #spring boot crud operations

Laravel 8 CRUD Operation Example

Hello Friend,

As you know Laravel 8 already officially released and today I will show you how to create CRUD operation in laravel 8, I have already perform many CRUD operations in my previous post like CRUD operation in ajax, CRUD operation in laravel 6 etc. So, today I will give you laravel 8 CRUD application example.

Laravel 8 CRUD Operation Example

https://websolutionstuff.com/post/laravel-8-crud-operation-example

#laravel #php #laravel 8 crud operation example #crud operation #laravel 8 crud tutorial #crud operation in laravel 8

Ray  Patel

Ray Patel

1619565060

Ternary operator in Python?

  1. Ternary Operator in Python

What is a ternary operator: The ternary operator is a conditional expression that means this is a comparison operator and results come on a true or false condition and it is the shortest way to writing an if-else statement. It is a condition in a single line replacing the multiline if-else code.

syntax : condition ? value_if_true : value_if_false

condition: A boolean expression evaluates true or false

value_if_true: a value to be assigned if the expression is evaluated to true.

value_if_false: A value to be assigned if the expression is evaluated to false.

How to use ternary operator in python here are some examples of Python ternary operator if-else.

Brief description of examples we have to take two variables a and b. The value of a is 10 and b is 20. find the minimum number using a ternary operator with one line of code. ( **min = a if a < b else b ) **. if a less than b then print a otherwise print b and second examples are the same as first and the third example is check number is even or odd.

#python #python ternary operator #ternary operator #ternary operator in if-else #ternary operator in python #ternary operator with dict #ternary operator with lambda

Rust Lang Course For Beginner In 2021: Guessing Game

 What we learn in this chapter:
- Rust number types and their default
- First exposure to #Rust modules and the std::io module to read input from the terminal
- Rust Variable Shadowing
- Rust Loop keyword
- Rust if/else
- First exposure to #Rust match keyword

=== Content:
00:00 - Intro & Setup
02:11 - The Plan
03:04 - Variable Secret
04:03 - Number Types
05:45 - Mutability recap
06:22 - Ask the user
07:45 - First intro to module std::io
08:29 - Rust naming conventions
09:22 - Read user input io:stdin().read_line(&mut guess)
12:46 - Break & Understand
14:20 - Parse string to number
17:10 - Variable Shadowing
18:46 - If / Else - You Win, You Loose
19:28 - Loop
20:38 - Match
23:19 - Random with rand
26:35 - Run it all
27:09 - Conclusion and next episode

#rust 

Angular 10/9/8 Firebase CRUD Operations with Reactive Forms

I am going to share with you how to create CRUD Operations using Angular 10/9/8 and Firebase real-time NoSQL cloud database. We’ll be using Angular’s Reactive Forms service for managing the user submitted data in our web application.

For the demo purpose, we’ll be creating a basic student record management system in which a school admin can perform following tasks:

  • Create Student
  • Read Student
  • Update Student
  • Delete Student

#angular #bootstrap #firebase #popular tutorials #typescript #angular crud operations #angular firebase #firebase crud operations #javascript