Plurrrr

To write a fast port scanner, a programming language requires:

• A Good I/O model, not to eat all the resources of the system.
• High-level abstractions and a good packaging system to isolate low-level code and reuse it easily.
• To be type and memory safe, because who wants offensive tools with vulnerabilities?
• And, ideally, to be compiled, because most of the time, it’s worth trading a little bit of compile time for extreme runtime speed.

Guess what? These are precisely Rust’s selling points. So let see how to build a high-speed port scanner in 100 lines of Rust.

The biggest challenge web apps face is not becoming an unmaintainable Big Ball of Mud. It slows you down and can put you out of business.

Each new version of Python adds new features to the language. For Python 3.8, the biggest change is the addition of assignment expressions. Specifically, the := operator gives you a new syntax for assigning variables in the middle of expressions. This operator is colloquially known as the walrus operator.