What's new in Swift 5.7?
The following changes were made in Swift 5.7:
- if let shorthand for unwrapping optionals
- Multi-statement closure type inference
- Clock, Instant, and Duration
- Regular expressions
- Type inference from default expressions
- Concurrency in top-level code
- Opaque parameter declarations
- Structural opaque result types
- Unlock existentials for all protocols
- Lightweight same-type requirements for primary associated types
- Constrained existential types
- Distributed actor isolation
- buildPartialBlock for result builders
- Implicitly opened existentials
- Unavailable from async attribute
