Languages like Java or C++ have Exceptions, which are errors, that are not explicitly mentioned in the function signature. Meaning, you might need to handle an exception you didn't even know existed. And if you don't, your program will just crash when these exceptions occur.

In Rust all errors are explicitly mentioned and part of the return type. Because of this Rust has a lot of ways to quickly handle an error. One of those ways is "Trust me, bro" (or .unwrap()), which converts the combined error/success return type into just a success type, causing the program to crash if it actually was an error, restoring the more unsafe behavior of other languages.

[–] thevoidzero@lemmy.world 4 points 2 days ago

Crashing through unwrap is not necessarily restoring unsafe behavior of other languages though. I'd consider this wayyyy better than silently continuing with invalid value until the program tries something that doesn't make sense/is overreaching and it crashes.

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