EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Hacker News·Jul 28·5 min read
Recursion Is Lying to You
TL;DR
Recursion is a powerful programming concept that can lead to elegant solutions, but it has a critical limitation: excessive recursive calls can cause stack overflow errors. Understanding this limitation is essential for developers to avoid crashes in their applications.
✦ Why It Matters
Evaluate your use of recursion in critical code paths to prevent potential stack overflow issues.
Key Takeaways
- Avoid relying on tail call optimization in JavaScript.
- Use iterative solutions for deep recursion to ensure stack safety.
- Test recursive functions with realistic input sizes.
- Maintain code clarity while managing stack behavior explicitly.
How It Works
Recursion works by calling a function within itself, which can simplify code for problems like tree traversals. Tail call optimization allows the last function call to reuse the current stack frame, reducing stack space usage.
⚠ The Catch
Many JavaScript engines do not consistently implement tail call optimization, leading to stack overflow even with correctly structured tail-recursive functions.