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