In previous posts I explained how React Query can be used to query smart contracts, that is, to perform read calls. Now I’m going to explain how to mutate, that is, to execute transactions on the blockchain. Unlike read calls, execution of transactions requires the confirmation by the user on…

Wallets that support multiple accounts and multiple blockchains, like MetaMask, make it very easy for a user to change active account and active blockchain. A web3 frontend should react immediately to these changes. NOTE: This series of articles use TypeChain to make strongly-typed calls to Ethereum. Please check its documentation…

In my previous post I explained how useQuery can be used to retrieve the value from an immutable method. Now let’s go up a notch and see how to use on methods where the returned value may change over time. NOTE: This series of articles use TypeChain to make strongly-typed…

React Query is often described as the missing data-fetching library for React, but in more technical terms, it makes fetching, caching, synchronizing and updating server state in your React applications a breeze. React Query is great to retrieve data from any remote source. Most examples of its use are based…

This is a third post in a series on performance in C#. Modern CPUs, in a quest for better performance, try to maximize its throughput by executing instructions simultaneously and while waiting for the result of logic tests. They try their best to guess the behavior of our code but…

In my previous post I left out ArraySegment<T>. This is a value type that implements a way to slice arrays but that has now been replaced by Span<T> or Memory<T>. Span<T> supports other types of contiguous memory collections but, if you’re using just arrays, ArraySegment<T> has a few advantages. Span<T>…

Implementing the sum of the items in an array is very simple. I think most developers would implement it this way: There’s actually a simpler alternative in C#: Another alternative is to use the Sum() operation provided by LINQ. It can be applied to any enumerable, including arrays. …

I’ve been writing here many stories about enumeration in .NET. I know it’s hard to remember everything, specially when developing large projects with several other developers. I decided to develop NetFabric.Hyperlinq.Analyzer that peer reviews the code while it’s typed. I actually use it myself to develop NetFabric.Hyperlinq. The easiest way…

Achieving zero heap memory allocations with LINQ operations. Introduction This is a follow up on my exploration into improving LINQ performance. This is a work in progress. Go to my previous article to find what triggered this. The source code is available at https://github.com/NetFabric/NetFabric.Hyperlinq Zero Allocation I’ve been emphasizing the importance of the…