Function tracing_subscriber::fmt::format::debug_fn [−][src]
pub fn debug_fn<F>(f: F) -> FieldFn<F> where
F: Fn(&mut Writer<'_>, &Field, &dyn Debug) -> Result + Clone,
This is supported on crate features
fmt
and std
only.Expand description
Returns a FormatFields
implementation that formats fields using the
provided function or closure.