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block chain programming

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  1. Solidity:solidityCopy code// Example Solidity Smart Contract
    pragma solidity ^0.8.0;

    contract SimpleStorage {
    uint256 storedData;

    function set(uint256 x) public {
    storedData = x;
    }

    function get() public view returns (uint256) {
    return storedData;
    }
    }
    • Platform: Ethereum
    • Description: Solidity is the most popular programming language for developing smart contracts on the Ethereum blockchain. Smart contracts are self-executing contracts with the terms of the agreement directly written into code.
    • IDE (Integrated Development Environment): Remix, Visual Studio Code with Solidity extensions.
  2. Chaincode (Go):goCopy code// Example Go Chaincode
    package     main

    import (
    "fmt"
    "github.com/hyperledger/fabric/core/chaincode/shim"
    "github.com/hyperledger/fabric/protos/peer"
    )

    type SimpleChaincode struct {
    }

    func (t *SimpleChaincode) Invoke(stub shim.ChaincodeStubInterface) peer.Response {
    // Implementation of smart contract invoke
    }

    func (t *SimpleChaincode) Query(stub shim.ChaincodeStubInterface) peer.Response {
    // Implementation of smart contract query
    }

    • Platform: Hyperledger Fabric
    • Description: Hyperledger Fabric is a permissioned blockchain platform, and chaincode is the term used for smart contracts in Hyperledger Fabric. Chaincode can be written in Go or Node.js.
    • IDE: Any code editor supporting Go.
  3. Rust:rustCopy code// Example Move Smart Contract
    module 1     {
    public 0x1::Mint::MintCoin(T: 0x1::LibraAccount::T, C: u64);
    }
    • Platform: Libra Blockchain (formerly known as Facebook Libra)
    • Description: Libra is a blockchain platform developed by the Libra Association. It uses the Move programming language, which is based on Rust.
    • IDE: Move language is still under development, and IDE support may vary.
  4. Java or Kotlin:javaCopy code// Example Corda Smart Contract (Java)
    public class MyContract implements Contract     {
    @Override
    public void verify(LedgerTransaction tx) throws     IllegalArgumentException {
    // Contract verification logic
    }
    }
    • Platform: Corda
    • Description: Corda is a blockchain platform specifically designed for financial institutions. It supports smart contracts written in Java or Kotlin.
    • IDE: IntelliJ IDEA or any Java/Kotlin IDE.