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Explore new features added to Hack, including generics, short lambda syntax, and the Collections API in this comprehensive talk from Meta's Hack Dev Day. Dive into type annotations at runtime, PHP closure expressions, Hack lambda expressions, and their benefits. Examine Hack Collections, static typing, immutable collections, and async/await functionality. Learn about constructor promotion, trailing commas, error detection in traits, and trait interfaces. Gain insights into future directions for Hack development from software engineers Drew Paroski and Eugene Letuchy.
