ABC of writing Ethereum smart contracts
手把手教你如何寫出以太坊智慧合約
Who we are
Today's workshop
- Basic Concepts
- Solidity Syntax
- Exercises using Play-ed
What do you need?
- Play-ed (solidity editor)
- Metamask
- Gitter Chat (for questions)
https://gitter.im/wizardamigosinstitute/program
1. Basic Concepts
Wallet - Generate User Account
EVM
EVM
EVM
EVM
EVM
EVM
EVM
EVM
EVM
EVM
EVM
Ethereum
EVM
EVM
EVM
Contract Accounts
User Accounts
Transactions
syncronization of blockchain copies
between ethereum nodes
Ethereum
A
B
C
C
EVM
Data of arbitrary length
Fixed-Length Hash
EVM
Blockhash
Blockhash
Blockhash
Blockhash
Contract Accounts
User Accounts
Transactions
EVM
EVM
between
Ethereum
EVM
-10
+10
EVM
EVM
1.
2.
3.
EVM
EVM
EVM
User Accounts
Dapp
User Accounts
User Accounts
Dapp
Dapp
= "Smart Contract Accounts"
Ethereum
DEMO TIME
Create your new external account
1. Install & Setup Metamask Wallet
2. Configure it to use Athereum Node
3. Come back and continue
- Contract Address
- Binary Code
- Value Balance
- Storage
- Memory
- Stack
- Event Log
- Transaction History
Transactions
Wallets send
& cryptographically
sign messages:
- Sender + Signature
- Receiver (="wallet" OR "existing contract" OR empty)
- Value
- Gas Limit
- Gas Price
- Payload (code for new contract if receiver is empty)
Next: How to program interaction between
ABC of writing Ethereum smart contracts 手把手教你如何寫出以太坊智慧合約