rust armanriazi unwrap
The unwrap
function in Rust is used to extract the value from a Result
type. It returns the value if the Result
is Ok
, and panics if the Result
is Err
. Here's an example of how to use unwrap
:
fn main() {
let result: Result<i32, &str> = Ok(5);
let value = result.unwrap();
println!("The value is: {}", value);
}
In this example, result
is an Ok
variant with a value of 5
. The unwrap
function is called on result
to extract the value, which is then assigned to the variable value
. Finally, the value is printed using println!
.
It's important to note that using unwrap
can be risky because it will panic if the Result
is Err
. It's generally recommended to handle the Result
in a more robust way, such as using match
or unwrap_or_else
to handle the Err
case.