partialdebug

Derive Debug for types where not all fields implement Debug.

This crate works on stable and with no_std. On nightly the unstable feature can be used for specialization based trait detection and/or .. formatting.

Placeholder with Type Info

use partialdebug::placeholder::PartialDebug;#[derive(PartialDebug)]structDog{legs:usize,eyes:usize,dna:DNA,}assert_eq!(format!("{:?}",Dog::new()),"Dog { legs: 4, eyes: 2, dna: DNA }");

Placeholder with Custom Text

use partialdebug::placeholder::PartialDebug;#[derive(PartialDebug)]#[debug_placeholder = "Unknown"]structDog{legs:usize,eyes:usize,dna:DNA,}assert_eq!(format!("{:?}",Dog::new()),"Dog { legs: 4, eyes: 2, dna: Unknown }");

Non Exhaustive

Only available on nightly after setting the unstable feature.

Requires the debug_non_exhaustive feature to be enabled in user code.

Only available for structs with named fields.

#![feature(debug_non_exhaustive)]use partialdebug::non_exhaustive::PartialDebug;#[derive(PartialDebug)]structDog{legs:usize,eyes:usize,dna:DNA,}assert_eq!(format!("{:?}",Dog::new()),"Dog { legs: 4, eyes: 2, .. }");

Caveats

Trait detection for generic types requires specialization. To enable specialization based trait detection use a nightly compiler and enable the unstable feature.

use partialdebug::placeholder::PartialDebug;#[derive(PartialDebug)]structContainer<T>(T);#[cfg(feature = "unstable")]assert_eq!(format!("{:?}",Container(42)),"Container(42)");#[cfg(not(feature = "unstable"))]assert_eq!(format!("{:?}",Container(42)),"Container(T)");

License

^{Licensed under either of Apache License, Version 2.0 or MIT license at your option.}
_{Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.}