ETH India is Asia’s biggest Ethereum Hackathon and the second installment of it just took place in Bangalore, India from 2nd August to 4th August. I decided to participate in the Hackathon as a hacker with my colleague Satyam and a college friend Saad. There, we created an open reputation protocol – Credeth. We ended …
When a revert happens in solidity, all the state changes done in that transaction are rolled back. All the changes done in sub calls are also rolled back. If we called a contract A which in turn tried to do a token transfer in contract B but contract B reverts, all the changes done by …
Try Catch in Solidity: Handling the revert Exception Read More »
Solidity is a special language with many little quirks. A lot of things behave differently in Solidity than most other languages as Solidity is created to work on the EVM with its limited feature set. I wrote a blog post with ten tips to save gas in Solidity a few months back and it got a great …
Solidity tips and tricks to save gas and reduce bytecode size Read More »
The Görli testnet The Görli testnet is the first cross-client proof-of-authority network for Ethereum. It is based on the Clique PoA protocol. It was launched on 31 January 2019 at the GörliCon. The development is led by Chainsafe Systems + Afri Schoedon from Parity but there are dozens of more contributors that helped in making …
The latest version of Solidity kickstarted a season of upgrades in the BUIDL space. The latest version of solidity essentially meant that all your smart contracts are now broken. It all seemed ok though; just a couple day’s work to get caught up. Then, just before Christmas came Truffle 5 with support for solidity 0.5 and web3 beta, and …
A dev’s journey from Truffle 4 to the unknown world of Truffle 5 Read More »
Docker images come real handy when you don’t need to keep an environment running. You can just pull the docker image and have the environment ready for use. This is specially useful in continuous integration. Doesn’t matter if you use Travis, CircleCI or anything else, you can always reliably use a docker image and get …
Docker image for solidity development and continuous integration Read More »
Solidity 0.5.X is here with a lot of features and breaking changes. Making all the changes to your solidity code manually, especially adding the explicitness requirements can be really cumbersome (and boring) for large projects. This is why I decided to make a codemod for Solidity that does most of the work for you. It’s …
[Tool] Refactor your solidity 0.4.x code to solidity 0.5.x code Read More »
Syncing an Ethereum full node has become painfully slow as the size of a full node folder has increased to over 130 GB and is continually increasing. Optimizing your configuration can save you hours or even days of sync times. I had to sync a few nodes a couple of weeks back, so I started tuning …
Optimal Parity Config for Syncing an Ethereum full node quickly Read More »
The Truffle Suite is the most widely used development framework for Solidity development but it is not perfect. We at Polymath, deal with a large set of smart contracts. The sheer number of smart contracts cause the compilation time to go over 80 seconds on my daily driver. Lucky for us, we can make the compilation go faster. …
Compile Solidity Smart Contracts Faster in Truffle Projects Read More »
Smart contracts have evolved into being more than just basic contracts. Now we have whole ecosystems powered by Smart Contracts! No matter how careful we are or how well tested our code is, if we are creating a complex system, there is a good chance that we will need to update the logic to patch …