#[must_use = "must eventually call `finish()` on Debug builders"]
pub struct DebugSet<'a, 'b> where
'b: 'a,
'b: 'a,
'b: 'b, { /* fields omitted */ }
A struct to help with fmt::Debug
implementations.
This is useful when you wish to output a formatted set of items as a part
of your Debug::fmt
implementation.
This can be constructed by the
Formatter::debug_set
method.
use std::fmt;
struct Foo(Vec<i32>);
impl fmt::Debug for Foo {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.debug_set().entries(self.0.iter()).finish()
}
}
println!("{:?}", Foo(vec![10, 11]));
pub fn entry(&mut self, entry: &dyn Debug) -> &mut DebugSet<'a, 'b> | [src] |
Adds a new entry to the set output.
Adds the contents of an iterator of entries to the set output.
Finishes output and returns any error encountered.
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Mutably borrows from an owned value. Read more