What does inline solve for higher-order functions, and what is reified?
It tests lambda overhead and type erasure. Answer: inline flattens lambdas into call sites to remove allocation and virtual calls; reified needs inline so the compiler knows the concrete type at the call site, enabling is T checks.
It tests Kotlin type erasure and lambda overhead. A great answer explains that inline removes overhead by copying lambdas into call sites, eliminating allocation and virtual calls. It notes reified requires inline because the compiler must know the exact type at the call site to emit concrete bytecode, bypassing JVM erasure and enabling runtime is T checks. It gives a concise example like inline fun reified T findParentOfType with p is T.
Read the original → kotlinlang.org
- #kotlin
- #inline-functions
- #reified
- #higher-order-functions
- #type-erasure
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