EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Lobsters·Aug 31·5 min read
RangeFrom, Part 2..: What I think is wrong about the design
TL;DR
James Munns critiques the design of the RangeFrom iterator, arguing that it lacks expected properties and leads to confusion in its usage.
✦ Why It Matters
Evaluate your own iterator designs to ensure they meet user expectations and reduce confusion.
Key Takeaways
- Review how RangeFrom handles overflow to prevent panics.
- Ensure your code accounts for potential values outside the expected range.
- Consider using alternative methods for iteration to improve safety.
- Stay updated on proposed changes to Rust's iterator behavior.
How It Works
The RangeFrom iterator is designed to yield values starting from a specified number, but its implementation increments an internal counter before yielding, which can lead to overflow issues. When overflow checks are enabled, the iterator may panic before reaching the maximum value, while disabling these checks can result in infinite loops.