Swift Concurrency introduces: 1) async/await for asynchronous code, 2) Structured concurrency with tasks, 3) Actor model for state isolation, 4) Improved error handling, 5) Better code readability compared to completion handlers, 6) Built-in deadlock prevention. Unlike GCD, it provides compile-time checking and safer concurrency patterns.
Actors provide: 1) Data race protection through isolation, 2) Synchronized access to mutable state, 3) Serial execution of methods, 4) Async interface for external access, 5) Safe state management across tasks, 6) Reference type semantics. Use actors when shared mutable state needs thread-safe access.
Concurrent data access patterns: 1) Using actors for isolation, 2) Implementing thread-safe properties, 3) Queue-based synchronization, 4) Read-write patterns, 5) Lock mechanisms, 6) Copy-on-write for value types. Ensures thread-safe data access.
Task Groups enable: 1) Parallel task execution, 2) Dynamic task creation, 3) Result collection, 4) Error handling, 5) Cancellation propagation, 6) Resource limiting. Used for managing multiple concurrent tasks with similar purpose.
Tasks represent: 1) Units of asynchronous work, 2) Structured task hierarchies, 3) Cancellation support, 4) Priority management, 5) Task-local storage, 6) Task groups for parallel execution. Tasks provide structured approach to managing concurrent operations.
GCD features: 1) Queue-based task execution, 2) Serial and concurrent queues, 3) Quality of service levels, 4) Dispatch groups for synchronization, 5) Barrier flags for synchronization, 6) Semaphores for resource management. Provides low-level concurrency primitives.
@MainActor ensures: 1) Code runs on main thread, 2) UI updates are safe, 3) State isolation for main thread, 4) Automatic thread switching, 5) Compile-time checking, 6) Integration with async/await. Use for UI-related code and main thread operations.
AsyncLetBinding enables: 1) Parallel async operations, 2) Result dependency management, 3) Structured concurrency, 4) Error propagation, 5) Cancellation handling, 6) Resource optimization. Used for concurrent independent operations.
Concurrent state machines: 1) Actor-based state management, 2) Thread-safe transitions, 3) Event handling, 4) State validation, 5) Error handling, 6) State observation. Ensures safe state management.
Actors provide: 1) Data race protection through isolation, 2) Synchronized access to mutable state, 3) Serial execution of methods, 4) Async interface for external access, 5) Safe state management across tasks, 6) Reference type semantics. Use actors when shared mutable state needs thread-safe access.
async/await provides: 1) Structured approach to asynchronous code, 2) Elimination of completion handler pyramids, 3) Linear code flow for async operations, 4) Automatic error propagation, 5) Integration with throwing functions, 6) Better stack traces. Solves callback hell and improves code readability.
Concurrent data access patterns: 1) Using actors for isolation, 2) Implementing thread-safe properties, 3) Queue-based synchronization, 4) Read-write patterns, 5) Lock mechanisms, 6) Copy-on-write for value types. Ensures thread-safe data access.
Async properties require: 1) Using async get keyword, 2) Managing property dependencies, 3) Handling cancellation, 4) Implementing caching, 5) Error handling, 6) Actor isolation consideration. Used for properties requiring async computation.
Concurrent state machines: 1) Actor-based state management, 2) Thread-safe transitions, 3) Event handling, 4) State validation, 5) Error handling, 6) State observation. Ensures safe state management.
GCD features: 1) Queue-based task execution, 2) Serial and concurrent queues, 3) Quality of service levels, 4) Dispatch groups for synchronization, 5) Barrier flags for synchronization, 6) Semaphores for resource management. Provides low-level concurrency primitives.
Async testing includes: 1) Using async test methods, 2) Implementing expectations, 3) Testing actor isolation, 4) Simulating delays, 5) Testing cancellation, 6) Verifying async sequences. Ensures proper testing of concurrent code.
Sendable protocol ensures: 1) Safe cross-actor data transfer, 2) Value type conformance, 3) Thread-safe reference types, 4) Compile-time checking, 5) Actor isolation preservation, 6) Concurrent data safety. Used for safe data sharing between concurrent contexts.
Async properties require: 1) Using async get keyword, 2) Managing property dependencies, 3) Handling cancellation, 4) Implementing caching, 5) Error handling, 6) Actor isolation consideration. Used for properties requiring async computation.
AsyncSequence/AsyncStream provide: 1) Asynchronous iteration over values, 2) Back-pressure handling, 3) Cancellation support, 4) Integration with for-await-in loops, 5) Buffer control, 6) Continuation handling. Used for handling streams of asynchronous values.
@MainActor ensures: 1) Code runs on main thread, 2) UI updates are safe, 3) State isolation for main thread, 4) Automatic thread switching, 5) Compile-time checking, 6) Integration with async/await. Use for UI-related code and main thread operations.
Task Groups enable: 1) Parallel task execution, 2) Dynamic task creation, 3) Result collection, 4) Error handling, 5) Cancellation propagation, 6) Resource limiting. Used for managing multiple concurrent tasks with similar purpose.
Async testing includes: 1) Using async test methods, 2) Implementing expectations, 3) Testing actor isolation, 4) Simulating delays, 5) Testing cancellation, 6) Verifying async sequences. Ensures proper testing of concurrent code.
Sendable protocol ensures: 1) Safe cross-actor data transfer, 2) Value type conformance, 3) Thread-safe reference types, 4) Compile-time checking, 5) Actor isolation preservation, 6) Concurrent data safety. Used for safe data sharing between concurrent contexts.
