Michael Krasnov

How to write a simple math interpreter in Python?

june 16, 2023 by michael krasnov | tags: interpreters, math Not long ago, I had to write a certain feature for my project. It involved parsing a mathematical expression from plaintext and evaluating it. This feature had to work with basic numerical expressions like 2 + 3, support context to use variables: apples + 2 * oranges, and parentheses: (2 + 3) - apples.

What are layer-2 blockchain solutions?

Layer-2 blockchain networks are designed to increase the scalability and efficiency of base blockchain networks.

What kinds of layer-2 blockchain solutions are there?

There are several different layer-2 networks in use today. They include channel-based (payment channels and state channels), rollups, sidechains, and commit chains. The diagram above lists some main kinds of layer-2 blockchain solutions. I will talk about them briefly. Channels – these are designed to provide exchange or transfer of state (funds) between participants.

What kinds of attacks are there?

Achieving scalability while preserving security is paramount to layer-2 networks. To foster mass adoption, layer-2 networks must be very hard to crack and exploit. Nevertheless, any and all systems are prone to error, and these networks are no exception. Below, I will list some of the most interesting and impactful vulnerabilities present in layer-2 networks.