#log #error #err #message #expect #option #unwrap

log_err

Log error messages from Unwrap and Expect with log crate

4 stable releases

1.1.1 Apr 25, 2021
1.0.1 Apr 14, 2021
1.0.0 Apr 12, 2021

#1556 in Rust patterns

Download history 1/week @ 2023-11-27 2/week @ 2023-12-18 3/week @ 2023-12-25 1/week @ 2024-01-15 12/week @ 2024-02-12 88/week @ 2024-02-19 26/week @ 2024-02-26 23/week @ 2024-03-04

149 downloads per month
Used in minetest-worldmapper

Unlicense

7KB
65 lines

Crates.io License Docs

Log_Err

A small extension to the log crate, which provides two methods for core::result::Result<T, E> and core::option::Option<T>

log_except and log_unwrap, which invoke the log::error! macro (in case of Result::Err/Option::None) in addition to unwrapping/expecting the Result/Option.

Shorthand for:

something().map_err(|e| error!("{}: {:?}", msg, e)).expect(msg)

Example:

let mut file = File::create("foo.txt").log_expect("Error creating file");
# Error will be logged with the error! macro
[ERROR] Error creating file: Os { code: 2, kind: NotFound, message: "No such file or directory" }

# Main program panic'ing with same message
thread 'main' panicked at 'Error creating file: Os { code: 2, kind: NotFound, message: "No such file or directory" }', test.rs:4:48

Dependencies

~87KB