trywrapok

This crate provides a macro similar to the old try! macro, or to the ?, except it wraps the error in an additional Ok.

This is useful if you want to use a ? for easily returning say, invalid input errors, but you can't do so because you have an additional Result level for handling internal errors of a different nature.

This macro allows you to do so:

```rust fn foo(input: Input) -> Result, DatabaseError> { let validatedinput: ValidatedInput = trywrapok!(validateinputwithdatabase(input)?); Ok(Ok(dostuffwithvalidatedinput(validated_input)?)) }

fn validateinputwith_database(input: Input) -> Result, DatabaseError>; ```