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Introduction to the Solidity Programming Language

Interfaces

Explore how Solidity interfaces serve as pure abstract contracts defining function declarations without implementation. Learn to implement these interfaces in smart contracts, access enums and structs, and follow best practices for modular, clear, and maintainable contract design.

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In Solidity, interfaces are pure abstract contracts that define a collection of function declarations but don’t include any statements, implementations, state variables, constructors, or implemented functions. They serve as blueprints for contracts that are intended to follow a specified set of functionalities.

Key characteristics of interfaces

Here are the key characteristics of interfaces:

  • Pure abstract contracts: Interfaces are essentially pure abstract contracts. They declare functions without providing any implementation details. ...