<ul><li>The article introduces using WebAssembly with Rust as an alternative to JavaScript for building modern web apps.</li><li>Installing Rocal, a WASM framework, is recommended for ease of building modern web apps.</li><li>Usage of Rust with WebAssembly enables efficient memory management and a static type system lacking in JavaScript.</li><li>Running 'rocal new -n simple_note' initializes a simple note app for practical learning.</li><li>The app setup involves understanding the entry point, controllers, views, and templates in the Rocal framework.</li><li>Routes, controllers, views, and templates in Rocal play crucial roles in setting up a WebAssembly web app.</li><li>Creating a new note involves defining routes, controllers, and actions as well as handling database interactions.</li><li>Updating existing notes, handling form submissions, and DB migrations are covered for practical app usage.</li><li>The article provides detailed code snippets and explanations for creating, updating, and displaying notes in the app.</li><li>Running the app locally using 'rocal run' allows for adding and saving notes, demonstrating WebAssembly functionality.</li></ul>

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