What is unwrap in Rust, and what is it used for?
I have this code that uses .unwrap():
fn main() {
let paths = std::fs::read_dir("/home/user").unwrap();
for path in paths {
println!("Name: {}", path.unwrap().path().display());
}
}
After looking at the definition of unwrap,
pub fn unwrap(self) -> T {
match self {
Ok(t) => t,
Err(e) => unwrap_failed("called `Result::unwrap()` on an `Err` value", e),
}
}
And the signature of read_dir
pub fn read_dir>(path: P) -> io::Result
Am I correct in understanding that unwrap returns the T type that is passed in Result?