zlacker

Do you want grep to crash when your text file turned out to have a partially written character in it? 99.999% seems very high, and you haven't given an actual use case for the restriction.

>>maxdam+(OP)
Crash? No. But I can safely handle the error where it happens, because the language actually helps me with this situation by returning a proper Result type. So I have to explicitly check which "variant" I have, instead of forgetting to call the validate function in case of go.

>>maxdam+(OP)
Rust doesn't crash when it gets an error unless you tell it to. You make a choice how to handle the error because you have to it or it won't compile. If you don't care about losing information when reading a file, you can use the lossy function that gracefully handles invalid bytes.