Rust is a programming language designed for safety and performance, often compared to C++.
Rust is well known to be unusually strict (compared to other programming languages) on how you are allowed to write your code. This makes the language harder to learn, though many agree it leads to much fewer errors popping up unexpectedly while your program is running.
Rust also has a notion of what is considered safe and unsafe code. Usually all rust code is considered safe. But if you put any code inside an unsafe block (unsafe { some code here }) many of the strict rules of rust are ignored, which makes this code be considered unsafe. Unsafe code is necessary when doing things that safe rust do not support (like calling code from other programming languages). Some argue that this makes fatal errors easier to find (compared to other languages) since they are almost always found inside unsafe code.
