itertools/
all_equal_value_err.rs

1#[cfg(doc)]
2use crate::Itertools;
3#[cfg(feature = "use_std")]
4use std::error::Error;
5use std::fmt::{Debug, Display, Formatter, Result as FmtResult};
6
7/// Value returned for the error case of [`Itertools::all_equal_value`].
8#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
9pub struct AllEqualValueError<Item>(pub Option<[Item; 2]>);
10
11impl<Item> Display for AllEqualValueError<Item> {
12    fn fmt(&self, f: &mut Formatter) -> FmtResult {
13        match self.0 {
14            None => {
15                write!(
16                    f,
17                    "got zero elements when all elements were expected to be equal"
18                )
19            }
20            Some([_, _]) => {
21                write!(
22                    f,
23                    "got different elements when all elements were expected to be equal"
24                )
25            }
26        }
27    }
28}
29
30#[cfg(feature = "use_std")]
31impl<Item> Error for AllEqualValueError<Item> where Item: Debug {}
itertools/all_equal_value_err.rs

itertools/
all_equal_value_err.rs
