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What Kotlin’s Type Inference Does Behind the Scenes
- Kotlin uses type inference to reduce the amount of type-related code you need to write while maintaining type safety.
- The compiler determines types based on usage, assignments, and expected contexts, locking in the type once inferred.
- Type inference is commonly seen with local variables, where the compiler infers the type from the assigned value.
- Return types of functions can be inferred when using single-expression bodies, simplifying code and maintaining clarity.
- In cases where the compiler needs more context, explicit type declaration is required to help with type inference.
- Kotlin's type inference extends to generics, function overloading, lambdas, and smart casts, enhancing code flexibility.
- Generics in Kotlin allow flexible type usage by inferring types from function or constructor call arguments.
- The compiler uses overload resolution and inference to determine which function to call based on arguments and signatures.
- Kotlin also supports SAM conversions, allowing passing lambdas in place of Java functional interfaces with inferred types.
- Type inference in Kotlin occurs during compilation, ensuring code cleanliness and safety through strict processes.
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