kvarn_utils::prelude::fmt

Struct DebugSet

1.2.0 · source 
pub struct DebugSet<'a, 'b>
where
    'b: 'a,
{ /* private fields */ }
Expand description

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.

§Examples

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()
    }
}

assert_eq!(
    format!("{:?}", Foo(vec![10, 11])),
    "{10, 11}",
);

Implementations§

source§

impl<'a, 'b> DebugSet<'a, 'b>
where 'b: 'a,

1.2.0 · source

pub fn entry(&mut self, entry: &dyn Debug) -> &mut DebugSet<'a, 'b>

Adds a new entry to the set output.<