Prompt Web3
  • 🤓Web3 Refresher Course with GptTutor
  • Creating your own Custom personas
  • Creating The Web3 GptTutor
  • Prompting the course sylibus
  • Prompting new lessons
  • Expanding parts of a lesson
  • Lesson 1
    • Lesson 1: Outline
    • Lesson 1: Assignments & Exercises
      • A1: Smart contracts in the real world
      • E1: HelloWorld.sol
  • Lesson 2
    • Lesson 2: Outline
    • Lesson 2: Assignments & Exercises
      • A1: Ethereum gas costs, data types and control structures - A brief take
      • E1: AssetManagement.sol
    • Lesson 2: Final notes and code repos
  • Lesson 3
    • Lesson 3: Outline
    • Lesson 3: Assignments & Excercises
      • A1 - Notes on View and Pure modifiers in Solidity
      • E1: EthWallet.sol
      • E1: Hardhat Tests
      • E1: NextJs Front End
    • Lesson 3: Final notes & Final project + repo
  • Lesson 4
    • Lesson 4: Outline
    • Lesson 4: Assignments & Exercises
      • A1 - Solidity error handling - notes on require, revert and assert
      • E1: EthWallet.sol - Update
      • E1 - EthWallet.test.js - Update
      • E1: NextJs Front End - Update
    • Lesson 4: Final notes & Final project + repo
  • Lesson 5
    • Lesson 5: Outline
    • Lesson 5: Assignments & Exercises
      • A1 - Using structs and mappings to manage complex data in Solidity
      • E1 - OrderSystem.sol
      • E1 - OrderSystem.test.js
    • Lesson 5: Final notes & Project Repo
  • LESSON 6
    • Lesson 6: Outline
    • Lesson 6: Assignments & Exercises
      • A1 - Solidity Interfaces - Facilitating interaction, modularity and Dapp upgradability
      • E1 - Ranked Choice Voting system
        • E1 - BallotContract.sol
        • E1 - IBallotContract.sol
        • E1 - VotingContract.sol
        • E1 - RCVotingSystem.test.js
      • E1 - Feedback
    • Lesson 6: Final notes & Project Repo
  • Lesson 7
    • Lesson 7: Outline
    • Lesson 7: Assignments & Exercises
      • E1 - Uniswap Flashswap dual Arbitrage Bot
        • E1 - FlashSwapV3.sol
        • E1 - dualArbScan.js
        • E1 - arbQuote.js
      • Lesson 7: Final notes & Project Repo
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  • Assignment 1:
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  • Exercise 2:
  1. Lesson 5

Lesson 5: Assignments & Exercises

Assignments and Practical Exercises

Assignment 1:

  • Write a brief essay on how and why to use structs and mappings together in Solidity contracts to manage complex data.

Exercise 1:

  • Implement a smart contract using enums to manage the state of a simple process, like an order system.

Exercise 2:

  • Create a contract utilizing structs to store user profiles and mappings to efficiently look up profiles by Ethereum addresses.


These advanced data types are fundamental in developing robust and functional smart contracts. They enable developers to represent complex data structures and relationships, manage contract state efficiently, and implement sophisticated logic within contracts. Through the practical exercises, you'll gain hands-on experience in utilizing these data types effectively.

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Last updated 1 year ago