kvarn_utils::prelude::fmt

Struct DebugList

1.2.0 · source 
pub struct DebugList<'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 list of items as a part of your Debug::fmt implementation.

This can be constructed by the Formatter::debug_list 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_list().entries(self.0.iter()).finish()
    }
}

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

Implementations§

source§

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

1.2.0 · source

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

Adds a new en