Solidity Programming Tutorials, Guides & Best Practices

• Description: The official documentation for the Ethereum blockchain, covering topics from basics to advanced development.
• Key Features:
• Comprehensive guides on setting up development environments.
• Tutorials on smart contract development and DApp creation.
• Detailed explanations of Ethereum concepts and protocols.
• Regularly updated with the latest information.
• Website: Ethereum Documentation

• Description: The official documentation for OpenZeppelin’s smart contract libraries and tools.
• Key Features:
• Guides on using OpenZeppelin Contracts, SDK, and Defender.
• Best practices for secure smart contract development.
• Tutorials on integrating OpenZeppelin tools with DApps.
• Regularly updated with the latest security features.
• Website: OpenZeppelin Documentation

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• Deploy the contract:

• public: Accessible externally and internally

• internal: Accessible only within the contract and derived contracts

Different operations in a smart contract consume different amounts of gas. Simple operations like adding two numbers are inexpensive, while more complex operations like loops or external contract calls can be costly. It’s important to understand how various Solidity operations consume gas.

Examples of Gas Costs:

• Web3.js: A JavaScript library for interacting with the Ethereum blockchain.
• contract.methods.setMessage(message).send({ from: accounts[0] }): Calls the smart contract’s setMessage function and sends a transaction to the blockchain.
• contract.methods.getMessage().call(): Calls the smart contract’s getMessage function to retrieve the stored message.

To interact with the Ethereum network, you need to connect MetaMask to your DApp.