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Byte Array and String Conversion in Rust
January 7, 2025 / Last updated : January 14, 2025 admin Rust Programming

Byte Array and String Conversion in Rust

In Rust, working with byte arrays (Vec<u8>) and strings (String or &str) is a common task, especially when dealing with raw data or low-level processing. Knowing how to convert between these types is very handy, particularly when you’re dealing with UTF-8 encoded strings yeah? https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=1df71cd623c11650ff9564dcb389f4b2 Example : Rust’s Vec<u8> is a dynamic array that holds […]

iter-cloned-collect
January 6, 2025 / Last updated : January 6, 2025 admin Rust Programming

Understanding Rust’s [ ].iter().cloned().collect() – A Beginner-Friendly Guide

Let’s look at some idiomatic Rust code, and see if we can explain what it’s doing and why! .iter().cloned().collect() often pops up when converting simple arrays into more complex collections like HashMap. Why Use This? This approach shines when initializing complex data structures while keeping your code concise. It’s also flexible—start with a small array, […]

BytesN
January 6, 2025 / Last updated : January 9, 2025 admin Rust Programming

BytesN in a Rust Smart Contract

Smart contract in Rust – Stellar’s BytesN Example code demo using BytesN If you’re used to using symbol_short! macro, note how for more than 9 characters we need to use Symbol::new We’ll use a fixed length 32 bytes array here so we need BytesN in Stellar : You could also use base64 encoded :

Timelock with Scheduler
January 5, 2025 / Last updated : January 9, 2025 admin Rust Programming

Timelock with Scheduler

Beyond the beginner friendly Soroban basics? Let’s now look at a larger Smart Contract example. As usual we’ll get to the essence of the code. We’ll stick to Alice and Bob for familiarity. What are we trying to achieve? The TimeLockContract is a Soroban smart contract designed to manage delayed execution of operations in a […]

&[&str] vs [&str; N] in Function Parameters
January 3, 2025 / Last updated : January 3, 2025 admin Rust Programming

&[&str] vs [&str; N] in Function Parameters

In Rust, handling function parameters often involves understanding the distinction between fixed-size arrays ([&str; N]) and slices (&[&str]). While both are collections of elements, their use cases and behaviours differ significantly, particularly when working with dynamically sized inputs. This article will help clarify the differences and explain when to use each approach, complete with example […]

January 2, 2025 / Last updated : January 2, 2025 admin Rust Programming

Rust Enum Representation Example

repr Memory Efficiency with #[repr(u8)] In Rust, enums are often used to represent a type that can take on a set of values, but by default, the underlying representation of an enum might be larger than needed. Using #[repr], we can specify exactly how we want the enum to be stored in memory. Let’s explore […]

cat_smart_contract
January 1, 2025 / Last updated : January 10, 2025 admin Rust Programming

Invoke Soroban Smart Contracts on Stellar Testnet

This article explains how to use one of the Soroban provided examples We’ll Deploy and Invoke Soroban Smart Contracts where one contract calls another. TL;DR: Contract B’s add_with function invokes Contract A’s add function to do some addition. **Ok, so I used chatGPT to help write this, but the code has been tested by a […]

Soroban Smart Contract Naming Conventions
December 24, 2024 / Last updated : January 15, 2025 admin Rust Programming

Understanding Soroban Smart Contract Naming Conventions

When working with Soroban smart contracts, naming conventions are not just conventions—they’re built into the system, enforced by the Soroban SDK. This article explains how contract struct names and their functions translate into the client types and methods, ensuring seamless development. Blah blah blah. What does that mean? I’ll show you, it means you get […]

merkle-tree
December 20, 2024 / Last updated : December 21, 2024 admin Bitcoin Programming

Building a Merkle Tree in Rust: Step-by-Step Guide with Code

Merkle trees are a fundamental component in many blockchain and cryptographic systems. They allow for efficient and secure verification of large datasets. In this article, we’ll walk through how to build a Merkle tree in Rust, step-by-step, and provide the complete code at the end. Understanding the Process Here’s how the construction of a Merkle […]

merkle-tree
December 20, 2024 / Last updated : December 21, 2024 admin Python Code

Understanding Merkle Trees in Python: A Step-by-Step Guide

In cryptography and computer science, a hash tree or Merkle tree is a tree in which every “leaf” node is labelled with the cryptographic hash of a data block, and every node that is not a leaf (called a branch, inner node, or inode) is labelled with the cryptographic hash of the labels of its […]

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