pub trait DebugWithContext<C>: Eq + Debug {
    fn fmt_with(&self, _ctxt: &C, f: &mut Formatter<'_>) -> Result { ... }
    fn fmt_diff_with(
        old: &Self,
        ctxt: &C,
        f: &mut Formatter<'_>
    ) -> Result { ... } }
Expand description

An extension to fmt::Debug for data that can be better printed with some auxiliary data C.

Provided Methods

Print the difference between self and old.

This should print nothing if self == old.

+ and - are typically used to indicate differences. However, these characters are fairly common and may be needed to print a types representation. If using them to indicate a diff, prefix them with the “Unit Separator” control character (␟ U+001F).

Implementations on Foreign Types