Programming Ethereum Smart Contracts in Solidity | Andrew Warshaver скачать в хорошем качестве

Programming Ethereum Smart Contracts in Solidity | Andrew Warshaver

Welcome to "Programming Ethereum Smart Contracts in Solidity" with Andrew Warshaver. This presentation was delivered on Thursday, August 29th 2019. This presentation starts by covering the fundamental differences between traditional Object-Oriented Programming and Contract-Oriented Programming, then dives into a couple simple examples to understand the basic concepts, to which we'll add some additional features to. Students will be able to follow along and participate as we code the contract together, using suggestions sent through sli.do. Finally, we'll briefly review some common pitfalls that developers should be aware of. This course is appropriate for current and aspiring blockchain developers who want to understand the basics of programming smart contracts in Solidity. ==== Andrew has been coding since age 12 and is an internationally recognized competitive programmer. He first got into crypto in 2015 when working on bitcoin-based smart contracts for financial products at Hedgy. Later, he joined the team at tZero/Medici and ported their exchange technology onto ethereum based smart contracts. After that, he founded an arbitrage trading company that he continues to develop today. Follow the CryptoCurrency Certification Consortium (C4) at: https://cryptoconsortium.org/   / learnmorewithc4   Follow the Blockchain Training Conference at: https://blockchaintraining.org Note: Downloadable slides for this presentation are not available. Prerequisite: Prior experience in any programming language such as JS, C, Python, or Java. Recommended software: Not required, but if you'd like to compile and run the examples, be ready with your favorite Ethereum IDE. Andrew will be using remix.ethereum.org. 0:00 Introduction 1:21 Topics 4:02 History yields perspective 5:47 The Ethereum Virtual Machine Read more 6:51 Primitives - Compiler Directives 8:46 Primitives - Address type (20 bytes) 9:38 Primitives - Enums 10:17 Structs 10:49 Arrays 12:28 Mappings (aka hashtables) 15:07 Signature checking 15:43 Contracts and Inheritance 17:13 Functions and Modifiers 17:59 Built-in Function and Storage Modifiers 19:33 Environment 21:00 What are smart contracts good for? 23:31 Basic Token 31:00 ERC-20 Standard 33:12 ERC-20 Evolving 44:55 Gnosis ICO Case Study