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October 23, 2024 / Last updated : October 23, 2024 admin Rust Programming

Learn libp2p in Rust

“The Rust Implementation of the libp2p networking stack.” https://github.com/libp2p/rust-libp2p/blob/master/libp2p/src/tutorials/ping.rs Peer-to-peer networking library libp2p is an open source networking library used by the world’s most important distributed systems What is a swarm? A swarm in libp2p represents a group of peers that can communicate over a P2P network. It provides the necessary abstractions for connection management, message […]

from trait
October 17, 2024 / Last updated : October 17, 2024 admin Rust Programming

From Trait

One of the more confusing examples for me to learn when studying Dave Macleod’s excellent “Rust in a Month of Lunches” was page 145. Check the “Rust Book” for the official description of the from trait : https://doc.rust-lang.org/std/convert/trait.From.html I modified the example to use cities in England to help me relate to it! Two cities, […]

Rust & SurrealDB
October 15, 2024 / Last updated : October 15, 2024 admin Rust Programming

Deserialize SurrealDB query with Rust

If you are new to SurrealDB and Rust you may be interested in how to get the data from a Response or even be trying to parse a ‘Value’. The Response struct The secret is to make a struct that will contain the keys (field names) that are present in the response. You don’t want […]

https://actix.rs/docs/application#state
October 14, 2024 / Last updated : October 14, 2024 admin Rust Programming

Shared state across multiple threads in Actix-web

Let’s look at “state” in Actix-web HttpRequest::app_data app_data is a method provided by actix-web, specifically for the App and HttpRequest types. Here’s how it works: Summary: Example code Alternatively, use the HttpRequest::app_data method to access data in a handler. And here is the main function The line Data::clone(&data) is effectively cloning a reference to the […]

October 14, 2024 / Last updated : October 14, 2024 admin Rust Programming

Namespaces in Actix-Web

Let’s look at namespaces, scope, and state: https://actix.rs/docs/application Here’s a real-world use case where application state is essential in an Actix Web application. Consider a scenario where you have a web service that provides exchange rates for different currencies. You might want to maintain a cache of these rates in the application state to avoid […]

October 11, 2024 / Last updated : October 11, 2024 admin Rust Programming

Async with tokio

Regular functions block threads Async doesn’t block threads Before we look at what tokio does, let’s consider how we’d run 3 tasks if they were ‘blocking’ Without Tokio (blocking): If you used std::thread::sleep, the execution would pause (block) for each function call until the sleep duration completes. This means that when you execute the code […]

October 8, 2024 / Last updated : January 14, 2025 admin Rust Programming

iced.rs – example snippets (version 0.13)

Code plus screenshots – how to manipulate the layout in Rust + iced.rs Credit : https://jl710.github.io/iced-guide/index.html © Héctor Ramón (hecrj) for the iced logo. just using “row” Change “row” to “column” just using “column” Column is centered…but not the text! 🤔 Column is centered and the text! 😀 Centre the window – iced.rs – 0.13 […]

alice-and-bob
September 21, 2024 / Last updated : September 28, 2024 admin Rust Programming

Rust Smart Contract (Stellar timelock)

Let’s pick the code apart for a timelock smart contract and with a bit of help from chatGPT and the Stellar documentation we’ll make sure we understand every part of it. https://github.com/stellar/soroban-examples/blob/main/timelock/src/lib.rs Timelock This is how it works with Alice and Bob: In summary, the contract protects the funds by ensuring that only the designated […]

https://surrealdb.com/
September 11, 2024 / Last updated : September 14, 2024 admin Rust Programming

Rust SurrealDB – JWT Auth

Testing Rust code for “signup” and checking the token. Add Scope and then you can create the JWT. Watch the YouTube video here: https://youtu.be/e4a8lOT_Gxg https://surrealdb.com Use the bearer token created by the rust code, not the one here as it will have expired WEBDOCK Linux VPS Hosting

factory pattern in rust
September 5, 2024 / Last updated : September 10, 2024 admin Rust Programming

Factory Pattern in Rust

https://en.wikipedia.org/wiki/Factory_method_pattern Let’s look at another design pattern – “The factory pattern” If you like these articles, there is a great site where you can learn more about Design Patterns : https://refactoring.guru/ The factory pattern is a design pattern in programming that helps create objects (or instances of classes) without telling the code exactly which kind […]

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