How to Sell Coupons on ETH? Web3.js and Connect Frontend with Metamask (3/4)

How to Sell Coupons on ETH? Creating your own sample dApp in four parts: Welcome to the front-end journey for the Finxter coupon Dapp. πŸ›‘ Note: This is just a training “fun” dApp that shows you how to use React, Truffle, and Solidity. It is not a real dApp with real functionality! Imaginary Scenario: Finxter … Read more

How to Sell Coupons on ETH? A Sample Solidity dApp with React and Truffle (1/4)

How to Sell Coupons on ETH? Creating your own sample dApp in four parts: Blockchain has bagged decent accolades recently for its transparency of the transactions made throughout the supply chain. By taking inspiration from that, we decided to make an imaginary Web3 dapp for the finxter academy. πŸ›‘ Note: This is just a training … Read more

How to Find Out if an Ethereum Address is a Contract?

Ethereum blockchain proposed tamper-proof decentralized financial contracts and applications. One of the main objectives of Ethereum is constructing decentralized applications that run without any downtime, fraud, control, or interference from a third party. Since it does not allow third-party interference, it is literally unthinkable to find a way to check if the address is a … Read more

String Concatenation in Solidity

Solidity does not offer a convenient built-in method to concatenate or compare the strings like other high-level programming languages such as java, Python, C or javascript, etc. the string type has just recently been introduced to the solidity language and it may take a while to improve further. However, the string concatenation is still possible … Read more