Custom Data Types

Definition

Custom data types in smart contract programming, such as Solidity’s struct keyword, allow developers to define composite data structures tailored to specific application needs. These types group related variables of different base types into a single logical unit. For instance, a struct could represent an option contract, encapsulating its strike price, expiry date, and underlying asset. Defining custom types enhances code organization and semantic clarity. This capability is fundamental for modeling complex financial instruments on-chain.