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, […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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
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 […]
In this article I show some code to web scrape EBAY using Rust and a proxy provided by ScrapeOps The code below uses the ScrapeOps endpoint : “https://proxy.scrapeops.io/v1/” and the requests are forwarded on to your chosen url to scrape. How to get an API key? You can get a free one, with 1000 tokens […]