# Solidity Notes - [Interview Questions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/interview-questions.md) - [1. Easy - Interview Questions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/interview-questions/1.-easy-interview-questions.md) - [2. Medium - Interview Questions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/interview-questions/2.-medium-interview-questions.md) - [3. Hard - Interview Questions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/interview-questions/3.-hard-interview-questions.md) - [4. Advanced - Interview Questions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/interview-questions/4.-advanced-interview-questions.md) - [Note Ideas](https://docs.eridian.xyz/ethereum-dev/solidity-notes/note-ideas.md) - [ABI](https://docs.eridian.xyz/ethereum-dev/solidity-notes/abi.md) - [abi.encodePacked](https://docs.eridian.xyz/ethereum-dev/solidity-notes/abi.encodepacked.md) - [Abstract Contracts](https://docs.eridian.xyz/ethereum-dev/solidity-notes/abstract-contracts.md) - [Arrays](https://docs.eridian.xyz/ethereum-dev/solidity-notes/arrays.md) - [Casting](https://docs.eridian.xyz/ethereum-dev/solidity-notes/casting.md) - [CEI - Checks, Effects, Interactions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/cei-checks-effects-interactions.md) - [Comments (NATSPEC)](https://docs.eridian.xyz/ethereum-dev/solidity-notes/comments-natspec.md) - [Constructor](https://docs.eridian.xyz/ethereum-dev/solidity-notes/constructor.md) - [Contract Structure & Versions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/contract-structure-versions.md) - [Data - Storage vs Memory](https://docs.eridian.xyz/ethereum-dev/solidity-notes/data-storage-vs-memory.md) - [Data - Storage Layout](https://docs.eridian.xyz/ethereum-dev/solidity-notes/data-storage-layout.md) - [Enum](https://docs.eridian.xyz/ethereum-dev/solidity-notes/enum.md) - [Errors (require & revert)](https://docs.eridian.xyz/ethereum-dev/solidity-notes/errors-require-and-revert.md) - [Events](https://docs.eridian.xyz/ethereum-dev/solidity-notes/events.md) - [EVM Opcodes](https://docs.eridian.xyz/ethereum-dev/solidity-notes/evm-opcodes.md) - [External Contract Interaction](https://docs.eridian.xyz/ethereum-dev/solidity-notes/external-contract-interaction.md) - [External Dependencies](https://docs.eridian.xyz/ethereum-dev/solidity-notes/external-dependencies.md) - [Functions](https://docs.eridian.xyz/ethereum-dev/solidity-notes/functions.md) - [Function Modifiers](https://docs.eridian.xyz/ethereum-dev/solidity-notes/function-modifiers.md) - [If / Else / For / While Loops](https://docs.eridian.xyz/ethereum-dev/solidity-notes/if-else-for-while-loops.md) - [Inheritance](https://docs.eridian.xyz/ethereum-dev/solidity-notes/inheritance.md) - [Interfaces](https://docs.eridian.xyz/ethereum-dev/solidity-notes/interfaces.md) - [Keccak256](https://docs.eridian.xyz/ethereum-dev/solidity-notes/keccak256.md) - [Library](https://docs.eridian.xyz/ethereum-dev/solidity-notes/library.md) - [Mappings](https://docs.eridian.xyz/ethereum-dev/solidity-notes/mappings.md) - [msg.sender](https://docs.eridian.xyz/ethereum-dev/solidity-notes/msg.sender.md) - [Objects & Types](https://docs.eridian.xyz/ethereum-dev/solidity-notes/objects-and-types.md) - [OpenZeppelin](https://docs.eridian.xyz/ethereum-dev/solidity-notes/openzeppelin.md) - [Payable](https://docs.eridian.xyz/ethereum-dev/solidity-notes/payable.md) - [Public State Variable vs Function](https://docs.eridian.xyz/ethereum-dev/solidity-notes/public-state-variable-vs-function.md) - [Receive & Fallback](https://docs.eridian.xyz/ethereum-dev/solidity-notes/receive-and-fallback.md) - [Security](https://docs.eridian.xyz/ethereum-dev/solidity-notes/security.md) - [Self Destruct](https://docs.eridian.xyz/ethereum-dev/solidity-notes/self-destruct.md) - [Send ETH (transfer, send, call)](https://docs.eridian.xyz/ethereum-dev/solidity-notes/send-eth-transfer-send-call.md) - [Stack Too Deep](https://docs.eridian.xyz/ethereum-dev/solidity-notes/stack-too-deep.md) - [Structs](https://docs.eridian.xyz/ethereum-dev/solidity-notes/structs.md) - [Style Guide](https://docs.eridian.xyz/ethereum-dev/solidity-notes/style-guide.md) - [Time Units](https://docs.eridian.xyz/ethereum-dev/solidity-notes/time-units.md) - [Try / Catch](https://docs.eridian.xyz/ethereum-dev/solidity-notes/try-catch.md) - [Typecasting](https://docs.eridian.xyz/ethereum-dev/solidity-notes/typecasting.md) - [Using Directive](https://docs.eridian.xyz/ethereum-dev/solidity-notes/using-directive.md) - [Variables, Consts & Immutable](https://docs.eridian.xyz/ethereum-dev/solidity-notes/variables-consts-and-immutable.md) - [Withdraws](https://docs.eridian.xyz/ethereum-dev/solidity-notes/withdraws.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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