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

```rust use partialdebug::placeholder::PartialDebug;

[derive(PartialDebug)]

struct Dog { legs: usize, eyes: usize, dna: DNA, }

assert_eq!(format!("{:?}", Dog::new()), "Dog { legs: 4, eyes: 2, dna: DNA }"); ```

Placeholder with Custom Text

```rust use partialdebug::placeholder::PartialDebug;

[derive(PartialDebug)]

[debug_placeholder = "Unknown"]

struct Dog { 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.

```rust

![feature(debugnonexhaustive)]

use partialdebug::non_exhaustive::PartialDebug;

[derive(PartialDebug)]

struct Dog { 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.

```rust use partialdebug::placeholder::PartialDebug;

[derive(PartialDebug)]

struct Container(T);

[cfg(feature = "unstable")]

assert_eq!(format!("{:?}", Container(42)), "Container(42)");

[cfg(not(feature = "unstable"))]

assert_eq!(format!("{:?}", Container(42)), "Container(T)"); ```

License

<sup>Licensed under either of Apache License, Version 2.0 or MIT license at your option.</sup>

<sub>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.</sub>