Debugging custom errors in Ethereum smart contracts using Foundry and Forge involves guessing, intuition and trial and error. Custom errors can provide clarity and save gas compared to traditional require statements. However, debugging them requires perseverance.

Debugging in Foundry and Forge: Techniques for Solidity Developers

In this video, I walk through four essential debugging techniques in Foundry and Forge, as outlined in my YouTube video. These techniques include:

1. Verbose Test Output
2. Foundry Interactive Debugging
3. Printf Debugging
4. Event Logging

1. Verbose Test Output

Verbose test output is …

I found the discussion of "Dancing Cells" in Don Knuth's latest lecture (2023) extremely relevant to blockchain programming.

The reason is this method of memory allocation is very similar to the method required to organize data as a set in Solidity. See here

Here is a example implementation of some …

The Case for Solidity-Only Testing in Smart Contract Development

If you're diving into the world of Solidity and smart contracts, you may have wrestled with the question: should I develop and test my project entirely in Solidity? For those unfamiliar with the debate, the alternative is often testing using TypeScript …

mocking calls to specific addresses in solidity

Mocking a specific address signature in Solidity is useful for simulating expected behavior from an existing address or instance of a contract. In mock testing dependencies are replaced with simulated implementations to isolate the behavior of the funtion under test.

Proxy contracts that …

Universal Upgradeable Proxy Standard UUPS ERC-1822 Tutorial and Complete Working Example

The first time I had to implement a UUPS proxy I found no clear example anywhere on the Internet. There are many trial implementations and even builders that enable one to implement a proxy in the background. It is …