The pure Functions
Learn about pure functions in Solidity.
Understanding the pure functions
The pure functions are important in Solidity because they ensure that no state is read or updated within the function. They’re intended for deterministic calculations and are a necessary component of secure and predictable smart contracts. We’ll explore these functions, including their purpose, properties, and how to utilize them successfully in contracts.
Purpose of the pure functions
Within smart contracts, the pure functions serve a specific purpose:
Immutability: They ensure that no state variables are read or updated within the function. This immutability is critical for a smart contract’s integrity and predictability.
Determinism: Regardless of the environment or context in which they’re called, these functions always generate the same outcome for the same input. This deterministic behavior is required to ensure that contract behavior is consistent across Ethereum network nodes.
Use cases for the pure functions
These functions are mostly used for mathematical calculations and utility functions that don’t need to access the contract’s state. Typical use cases include the following:
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