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use struct_patch::Patch;
#[derive(Default, Patch)]
#[patch(attribute(derive(Debug, Default)))]
struct Item {
field_bool: bool,
field_int: usize,
field_string: String,
}
fn main() {
let item = Item::default();
let new_item = Item {
field_int: 7,
..Default::default()
};
// Diff on two items to get the patch
let patch: ItemPatch = new_item.into_patch_by_diff(item);
assert_eq!(
format!("{patch:?}"),
"ItemPatch { field_bool: None, field_int: Some(7), field_string: None }"
);
}
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