Derive Debug
with a custom format per field.
Here is a showcase of all possible field attributes:
```rust use custom_debug::Debug; use std::fmt;
#[deriveDebug)]
struct Foo {
#[debug(format = "{} things")]
x: i32,
#[debug(skip)]
y: i32,
#[debug(with = "hex_fmt")]
z: i32,
}
fn hex_fmt<T: fmt::Debug>(n: &T, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "0x{:02X?}", n)
}
```
The resulting debug output would look something like this:
Foo {
x: 42 things,
z: 0xAB
}