cairo-structs

name: cairo-structs description: Explain how to define and instantiate Cairo structs, field access, mutability, field init shorthand, and update syntax; use when a request involves struct definitions or field-related compile errors in Cairo.

Cairo Structs

Overview

Guide struct definitions, instantiation patterns, and safe field updates.

Quick Use

• Read references/structs.md before answering.
• Use clear examples showing struct definition and Type { field: value } initialization.
• Highlight ownership effects of struct update syntax.

Response Checklist

• Note that the whole instance must be mut to change any field.
• Use field init shorthand when variable names match field names.
• If using update syntax, mention that it moves fields from the source instance.

Example Requests

• "How do I define a struct with multiple fields in Cairo?"
• "Why can't I mutate just one struct field without mut?"
• "How does struct update syntax affect ownership?"

Cairo by Example

• Custom Types
• Structures
• Struct visibility