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Learn Rust Coding · Lesson

Rust to WebAssembly (WASM)

Compile Rust code to WebAssembly, enabling high-performance modules to run in web browsers and other WASM runtimes.

What is WebAssembly (WASM)?

WebAssembly, or WASM, is a binary instruction format for a stack-based virtual machine. It's designed to be a portable compilation target for high-level languages like Rust, C/C++, and Go.

Think of it as a low-level assembly-like language that runs efficiently in web browsers and other environments. It allows you to run performance-critical code at near-native speeds.

Rust's Advantages for WASM

Rust is an excellent choice for WebAssembly development due to its unique strengths:

  • Performance: Rust is known for its speed, close to C/C++.
  • Memory Safety: Rust's ownership system prevents common bugs without a garbage collector.
  • Small Binaries: Rust's minimal runtime leads to compact WASM modules.
  • Tooling: Excellent support with tools like wasm-pack and wasm-bindgen.

All lessons in this course

  1. Foreign Function Interface (FFI)
  2. Rust to WebAssembly (WASM)
  3. Benchmarking and Performance Tuning
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