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Building � Ethereum � powered � DApps

Arpit Mathur

@arpit�

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Quick Poll

  • Software/Web Developers?
    • JavaScript?
      • React?
    • Rails?

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Traditional App Stack

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Decentralized App Stack

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Communicating with the Network

  • JSON RPC
  • Web3.js
  • Injected Web3.js
  • Web dev framework (Truffle)

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Ganache / Ganache CLI

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Truffle

  • “Rails for Ethereum Dapps”
  • “Truffle Boxes”: Preconfigured projects

http://truffleframework.com/

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Remix IDE

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Metamask

  • Ethereum Wallet
  • Chrome Extension
  • Injects configured Web3.js into your page

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A Simple Contract

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Workflow

  • Create Contract in Solidity
  • Move Contracts to /contracts directory
  • Compile contract:
    • `truffle compile`
  • Run Ganache (local test net)
  • Deploy Contracts
    • `truffle migrate`
  • Import Contract JavaScript stub in your clientside code
    • import MyContract from '../../../build/contracts/MyContract.json'
  • Execute functions on Contract in JavaScript (at the right address)

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Profit?

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Links and such!

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