Blockchain Development Programming Tutorials, Guides & Best Practices
Explore 30+ expertly crafted blockchain development tutorials, components, and code examples. Stay productive and build faster with proven implementation strategies and design patterns from DeveloperBreeze.
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Writing an ERC-20 Token Contract with OpenZeppelin
- Use libraries like Web3.js or Ethers.js to build a front-end that interacts with your token contract. Connect the front-end to MetaMask to allow users to interact with the contract.
If you’ve deployed your contract to a public testnet or the mainnet, you might want to verify the contract on Etherscan.
Solidity Cheatsheet
Libraries are similar to contracts but are meant to hold reusable code. They cannot hold state.
library Math {
function add(uint a, uint b) internal pure returns (uint) {
return a + b;
}
}
contract MyContract {
using Math for uint;
function calculate(uint a, uint b) public pure returns (uint) {
return a.add(b);
}
}
Understanding Gas and Optimization in Smart Contracts
5. Avoid Unnecessary Computations
- Reduce redundant calculations or operations within your smart contract. Precompute values where possible and reuse them.
- Example: Store the result of a complex computation in a variable rather than recalculating it multiple times.
Introduction to Smart Contracts on Ethereum
Steps to Set Up:
Solidity is the programming language used to write smart contracts on Ethereum. Let’s create a simple smart contract that stores a number and allows users to update it.