KISS for maintainability: "Nothing in Rust forces us to get fancy. You can write straightforward code in Rust just like in any other language. But in code reviews, I often see people trying to outsmart themselves and stumble over their own shoelaces. They use all the advanced features at their disposal without thinking much about maintainability."

Here an real life example.

But if simplicity is so obviously “better,” why isn’t it the norm? Because achieving simplicity is hard!

Even in Rust: abstractions are never zero cost for developers.

Often, simple code can be optimized by the compiler more easily and runs faster on CPUs. That’s because CPUs are optimized for basic data structures and predictable access patterns. And parallelizing work is also easier when that is the case. All of that works in our favor when our code is simple.

Most of the code you’ll write for companies will be application code, not library code. That’s because most companies don’t make money writing libraries, but business logic. There’s no need to get fancy here. Application code should be straightforward to keep your fellow developers in mind.

Tips:

• start small
• avoid optimization early
• delay refactoring: we have limited information at the time of writing our first prototype.
• write code for humans
• The right abstractions guide you to do the right thing