Category: Rust

Parallelism in Rust usually means one of three things:

1. Data-parallel CPU work (split work across cores)
2. Task parallelism (run independent CPU tasks concurrently)
3. Async concurrency (lots of I/O, not CPU parallel by default)

When making things go parallel, there are following things to consider. Safe parallel code comes from being …

 What a procedural macro is (in one sentence)

A procedural macro is Rust code that runs at compile time and generates Rust code by programmatically transforming syntax trees.

Normal Rust code runs at runtime

Procedural macros run while the compiler is compiling

How to use procedural macro

1. Define the macro

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Every value in Rust has exactly one owner at a time, and when the owner goes away, the value is automatically cleaned up.

Let’s build this step by step.

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1️⃣ The three ownership rules

Rust enforces these at compile time:

1. Each value has one owner
2. There can only be one

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Static Dispatch

What it is

• The function implementation is chosen at compile time
• Used by generics (T: Trait, impl Trait)

How it works

• The compiler monomorphizes generic code
• A separate, concrete version of the function is generated for each type
• All types and sizes are known at

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follow the instruction in this video

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I want to understand:

how cargo run -r --bin powdr_openvm -- ... works and how you can trace back CLI parameters like --input and --autoprecompiles to the source code.

chatGPT said I need to check [bin] definition in Cargo.toml to get what binary will be, but there is no [bin] …

BTreeMap

std::collections::BTreeMap

BTreeMap is a type from Rust’s standard …

Traits

• Definition: Traits are a way to define shared behavior in Rust. They define a set of methods that a type must implement in order to fulfill the

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