How Rust And C++ Work Better For WebAssembly?

1. Low-Level Control:  Rust and C++ allow fine-grained memory management and control, crucial for efficient WebAssembly execution.

2. Optimized Compilation:  Both languages offer advanced compiler optimizations, resulting in compact and fast WebAssembly code.

3. No Runtime Overhead:  Rust's and C++'s abstractions map well to WebAssembly, minimizing runtime overhead compared to higher-level languages.

4. Predictable Performance:  Rust's ownership model and C++'s manual memory management lead to consistent and reliable performance in the WebAssembly environment.

5. Direct Hardware Interaction:  Rust and C++ enable direct interaction with hardware, crucial for certain applications like gaming. 

6. Existing Libraries:  C++ and Rust have extensive libraries that can be compiled to WebAssembly, leveraging existing codebases for web applications.

7. Interop Capabilities:  Both languages provide solid interop with JavaScript, allowing seamless integration of WebAssembly modules into existing web projects.

8. Ecosystem Support:  Rust and C++ have growing communities and tools dedicated to WebAssembly development, ensuring ongoing improvements and support.

9. Type Safety and Memory Safety: Rust's strong emphasis on preventing memory-related errors and C++'s modern features.

10. Performance-Critical Applications Rust and C++ are well-suited for performance-critical tasks like real-time graphics, simulations, etc.