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        1. 智能合約

          Smart Contracts

          這是Blockchain專項課程的第二個課程,將幫助您設計,編碼,部署和執行智能合約 – 區塊鏈技術的計算元素。

          紐約州立大學 & 布法羅大學

          分享

          • 分類: 計算機
          • 平臺: Coursera
          • 語言: 英語

          課程概況

          This second course of the Blockchain specialization will help you design, code, deploy and execute a smart contract – the computational element of the blockchain technology. Smart contracts allow for implementing user-defined operations of arbitrary complexity that are not possible through plain cryptocurrency protocols. They allow users to implement conditions, rules and policies of the domain applications. Smart contracts are a powerful feature that, when properly designed and coded, can result in autonomous, efficient and transparent systems.

          You will design and program smart contracts in Solidity language, test and deploy them in the Remix development environment, and invoke them from a simple web interface that Remix provides. This course features best practices for designing solutions with smart contracts using Solidity and Remix IDE.

          Main concepts are delivered through videos, demos and hands-on exercises.

          此課程適用人群: This course is for anyone interested in designing and developing smart contracts. Along with other courses of the Blockchain specialization, it provides the foundation to design and develop decentralized applications (the focus of the third course) on the blockchain. Mastery of content from the first course (Blockchain Basics) of this specialization is a prerequisite.

          授課大綱

          第 1 周

          Smart Contract Basics
          The purpose of this module is to introduce the reasons for a smart contract and its critical role in transforming blockchain technology from enabling decentralized systems. We will explore the structure and basic concepts of a smart contract through examples, and illustrate Remix (remix.ethereum.org) web IDE for deploying and interacting with a smart contract.

          第 2 周

          Solidity
          Our goal is to master the basics of Solidity, a high-level language that is a combination of Javascript, Java and C++. It is specially designed to write smart contracts and to target the Ethereum Virtual Machine. Learners will be able to follow demonstrations and practice using Solidity.

          第 3 周

          Putting it all Together
          This module focuses on the development of the Ballot smart contract incrementally to illustrate various features including time dependencies, validation outside the function code using access modifiers, asserts and require declarations, and event logging.

          第 4 周

          Best Practices
          This module will focus on best practices including evaluating whether a blockchain-based solution is suitable for your problem, designing Solidity smart contracts, and those relating to Remix IDE.

          常見問題

          我什么時候能夠訪問課程視頻和作業?
          注冊以便獲得證書后,您將有權訪問所有視頻、測驗和編程作業(如果適用)。如果您選擇在不購買的情況下探索課程,則您可能無法訪問某些作業。

          如果我需要額外的時間來完成課程會怎么樣?
          這不是問題,您可以靈活設定課程時間表,支付課程費用之后可以獲得在 180 天內訪問完整課程的權限和獲得證書的資格。自學課程具有建議的截止日期,但是只要您在 180 天內獲得證書,那么即使超過截止日期也不會被扣分。

          我支付此課程之后會得到什么?
          如果您支付此課程的費用,您將可以訪問獲得課程證書所需的所有功能和內容。如果您成功完成課程,您的電子證書將被添加到您的成就頁中,您可以通過該頁打印您的證書或將其添加到您的領英檔案中。請注意,課程證書不代表提供課程的合作伙伴機構的正式學分。

          我能夠免費學習此課程嗎?
          本課程不提供 7 天具有完全訪問權限的免費試用,但您可以免費旁聽視頻課程和一些課程內容。如果您想通過提交作業獲得分數來完成課程,并獲得課程證書,您可以通過購買課程來提升您的體驗。如果您承擔不起課程費用,您還可以申請助學金。

          我能夠退款嗎?退款政策是如何規定的?
          您可以在付款日期之后的兩周內獲得全額退款。獲得課程證書后,您便無法再退款;即使您在兩周的退款期內完成了課程,也是如此。請閱讀我們的完整退款政策。

          有助學金嗎?
          是的!Coursera 為想要完成課程但無法承擔課程費用的學生提供助學金。要申請助學金,請在“助學金”部分中選擇“注冊”按鈕下的“了解詳情并申請”。系統會提示您完成簡單的申請流程;無需其他文件。

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