language_comparative_runtime

Cross-language runtime comparison analyzes how each language handles memory models, dispatch strategies, and safety checks. This Skill provides structured side-by-side analysis of Java's garbage collection, C++'s RAII, and Rust's borrow checker to evaluate performance and safety trade-offs across implementations.

Iterator semantics vary fundamentally by runtime model. Java relies on GC and virtual dispatch; C++ uses zero-cost abstractions and compile-time optimization; Rust enforces ownership rules. This Skill explains how each language's memory safety strategy affects iterator fusion, lazy evaluation, and performance characteristics.

Choosing between Java, C++, and Rust depends on memory safety requirements, abstraction cost tolerance, and iterator fusion capability. This Skill compares trade-offs across safety, dispatch overhead, and optimization potential to guide implementation decisions for hot paths.

Runtime semantics differ significantly: Java's GC introduces pause latency and dispatch indirection; Rust's borrow checker eliminates runtime checks with compile-time verification; C++ RAII provides deterministic cleanup. This Skill quantifies these impacts on memory models and iterator behavior across contexts.

Iterator implementations require language-specific adaptations due to fundamental runtime differences. This Skill identifies structural compatibility and incompatibility points—dispatch strategies, memory safety checks, and fusion rules—to guide safe porting across Java, C++, and Rust.