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function hello() {
  console.log("hello world");
}

738

pragma solidity ^0.4.24;

import "./User.sol";

contract BabySitter is User {
    bool isMale;            // 성별
    uint16 birthOfDate;       // 생년월일
}

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class ExampleContract {
    constructor() {
        // define property named "num" in storage.
        LocalContractStorage.defineProperty(this, "num");
    }

    init() {
        // it is implemented just once when contract is deployed.
        // the property defined in contructor can be accessed like this. default "num" value is set as 0.
        this.num = 0;