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Last updated: March 2025
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@Composable functions are the building blocks of Compose UI. When you annotate a function with @Composable, it can emit UI elements through the Compose runtime. The Compose compiler transforms these functions during compilation, enabling them to be recomposed efficiently when their inputs change. Composable functions follow key principles: they should be idempotent, have no side effects, and describe UI based purely on their input parameters.
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