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Learn how to seamlessly convert PHP code to Hack in this 30-minute talk from Meta's Hack Dev Day. Explore the general process, Hack of Occlusion, and Hack of Headers as Software Engineer Josh Watzman shares insights from Facebook's production experience. Discover the benefits of Hack through practical examples, including an example project and the Breath Approach. Master techniques like preparing your codebase, achieving zero errors, and adding type annotations. Understand the rationale behind running conversions all at once and follow the conversion graph to successfully harden all types in your project.
