# Cairo Operator Overloading

> Explain Cairo operator overloading using core::ops traits like Add; use when a request involves redefining operators for custom types in Cairo.

- Skill: `teddyjfpender/cairo-operator-overloading` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add teddyjfpender/cairo-operator-overloading`
- Raw SKILL.md: https://api.skillmd.com/api/skills/teddyjfpender/cairo-operator-overloading/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: teddyjfpender (https://skillmd.com/u/teddyjfpender)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/teddyjfpender/cairo-operator-overloading

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# Cairo Operator Overloading

## Overview
Show how to overload operators by implementing the corresponding trait.

## Quick Use
- Read `references/operator-overloading.md` before answering.
- Use a concise example like `impl TypeAdd of Add<Type>`.
- Emphasize that operator meaning should remain intuitive.

## Response Checklist
- Choose the correct trait (e.g., `Add`, `Sub`, `Mul`, `Div`, `Rem`, `Neg`).
- Implement the trait for the concrete RHS type (`Add<Other>` or `Add<Self>`).
- Return a new value with the expected semantics.

## Example Requests
- "How do I implement `+` for a custom struct?"
- "Can I overload operators in Cairo?"

## Cairo by Example
- [Operator Overloading](https://cairo-by-example.xyz/trait/ops)