Скачать с ютуб Smart Contracts: Connect, Test, Deploy😏 Ethereum: Build Smart Contracts, Easy! в хорошем качестве

Smart Contracts: Connect, Test, Deploy😏 Ethereum: Build Smart Contracts, Easy!

The key idea of the video is that web developers can use a step-by-step guide to connect to the Ethereum network, test and deploy smart contracts using tools like Metamask and Remix IDE. 00:00 Building a smart contract is crucial for web developers, and this step-by-step guide explains how to connect to the Ethereum network and test it. 00:56 Use a built-in browser wallet like Metamask to connect to the Ethereum network, choose an Ethereum test network to test your smart contract, obtain test tokens for the chosen network, and use the Remix IDE to create a smart contract in your browser. 02:03 To write basic smart contracts, go to clinics.ethereum.org, create a new file with a .sol extension, and start writing code in the workspace. 02:43 Create a smart contract for a hostel that includes variables for landlord and tenant addresses, details of each hostel room, rental agreements, and rent payments, along with modifiers to verify conditions before running functions. 04:16 The required statement ensures that a function will only execute if a given condition is satisfied, otherwise an error code will appear, and there are various modifiers available to check different conditions in a smart contract. 05:28 The assign agreement function allows tenants to sign a rental agreement with the landlord, but only if their addresses don't match, they have enough ether in their wallet, and the room is vacant; additionally, the pay rent function can only be executed if the user's address matches the previous tenant's address, they have signed an agreement, and have paid their previous rent more than a month ago. 06:42 The landlord can mark an agreement as completed if the addresses match and the agreement was signed over a year ago, and they can also terminate an agreement under the same conditions. 07:27 To deploy a smart contract, select the deploy and run transaction option, choose the environment, adjust the gas limit if needed, and prepare the contract for live deployment by testing and auditing it before deploying it to the Ethereum network. #smartcontracts #smartcontract