The EVM’s Log Opcodes Logging and Reporting Events The EVM’s Log Opcodes Event Topics The previous post of this series introduced the notion of Solidity Events, and why they are important for Ethereum Apps. It also showed how they are stored in transactions and can be accessed programmaticaly. This post shows how events are represented …
Ethereum transactions don’t return function results. The only way to know a Contract performed some action is to watch for notifications on the blockchain. This is the lifeblood of an App. This series explores events in depth, and how best to use them.
In my last post on a series about pitfalls when using Hash Functions, I cover Solidity and Truffle.js / Node.js. I also talk a bit about Coding Theory and Endianness of number representations.
When one starts coding smart contracts in Solidity, sooner or later, s/he will hit a very annoying obstacle. The Stack Too Deep error. It is easy to fall into this trap, and when that happens, it is often hard to find a way out. To be fair, the underlying reason is not in Solidity itself, …
There are many occasions when we want to pass to a function a group of similar data that may, or may not, be limited in number. The most basic data type for this situation is an array (and in several cases, this can be used to implement more advanced data structures). We can pass and …
It feels like a long time since I started this blog, and until now it has been dedicated to writing about statistics. I don’t particularly enjoy this monody, it can quickly become boring and tiresome. Moreover, this blog was from the start aimed at probing two different areas, and after so long dedicated to one …
