Rust Result Custom Error. SrNo Name. Maps a Result to Result by applying a function to a contained Ok value leaving an Err value untouched.
The Result type is an enum that has two variants - Ok T for successful value or Err E for error value. Please be sure to answer the questionProvide details and share your research. Radtke III on 12 Sep 2016.
Rust has gained a new operator that makes error handling more pleasant by reducing the.
This will result in exactly the same output. Print the numbers on each line of a string multiplied by two. A custom error type. The unwrap method abstracts away the case analysisThis is precisely the thing that makes unwrap ergonomic to use.