# Cairo Method Syntax

> Explain Cairo method syntax, traits/impl blocks, `self` parameter forms, and associated functions; use when a request involves defining or calling methods on structs in Cairo.

- Skill: `teddyjfpender/cairo-method-syntax` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add teddyjfpender/cairo-method-syntax`
- Raw SKILL.md: https://api.skillmd.com/api/skills/teddyjfpender/cairo-method-syntax/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-method-syntax

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# Cairo Method Syntax

## Overview
Guide method definitions using traits and impl blocks, with correct `self` forms.

## Quick Use
- Read `references/method-syntax.md` before answering.
- Show a small struct with an impl block and a method taking `self` or `@self`.
- Mention associated functions for constructors like `new` or `square`.

## Response Checklist
- Use `self` by value for ownership-taking methods.
- Use `@self` for read-only methods and `ref self` for mutation.
- Note that methods are defined in traits and implemented in `impl` blocks.

## Example Requests
- "How do I define a method on a Cairo struct?"
- "What's the difference between `self`, `@self`, and `ref self`?"
- "How do I write a constructor-like associated function?"

## Cairo by Example
- [Methods](https://cairo-by-example.xyz/fn/methods)