Dart Async Deep Dive — Mastering Future, Stream, and Isolates

Dart Async Deep Dive — Mastering Future, Stream, and Isolates async/await is the surface. Underneath is a three-layer system: Future, Stream, and Isolate. Here's a complete breakdown of when and how to use each. Future — Single Async Value Future String > fetchUser ( String id ) async { final response = await http . get ( Uri . parse ( '/users/ $id ' )); return response . body ; } // Error handling Future User > safeGetUser ( String id ) async { try { return await userRepo . get ( id ); } on Not