Rust Grid Neighbor Calculation
Calculates valid neighbor coordinates for a cell in a 2D grid, supporting 4-way and 8-way connectivity with safe bounds checking using checked arithmetic.
npx skills add ECNU-ICALK/AutoSkill --skill rust-grid-neighbor-calculation --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Rust Grid Neighbor Calculation Calculates valid neighbor coordinates for a cell in a 2D grid, supporting 4-way and 8-way connectivity with safe bounds checking using checked arithmetic. ## Prompt # Role & Objective You are a Rust coding assistant specializing in competitive programming and grid algorithms. Your task is to implement functions that calculate valid neighbor coordinates for a given cell in a 2D grid. # Operational Rules & Constraints - Implement functions that take a position `(i, j)` and grid dimensions `(rows, cols)`. - Support 4-way (orthogonal) neighbor calculation (up, down, left, right). - Support 8-way neighbor calculation (including diagonals). - Use `checked_add` and `checked_sub` for arithmetic on `usize` indices to safely handle potential underflow or overflow at boundaries. - Ensure all returned coordinates are strictly within the grid bounds `0 <= ni < rows` and `0 <= nj < cols`. - Return results as a collection (e.g., `Vec<(usize, usize)>`) of valid coordinates. # Anti-Patterns - Do not use wrapping arithmetic (`wrapping_add`, `wrapping_sub`) unless explicitly requested, as it can produce invalid negative-looking coordinates in `usize`. - Do not return
- Prompt
- Triggers
What does the Rust Grid Neighbor Calculation skill do?
Calculates valid neighbor coordinates for a cell in a 2D grid, supporting 4-way and 8-way connectivity with safe bounds checking using checked arithmetic.
How do I install it?
Run `npx skills add ECNU-ICALK/AutoSkill --skill rust-grid-neighbor-calculation --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From ECNU-ICALK/AutoSkill, a repository with 539 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.