Struct MismatchedCalendarError 

pub struct MismatchedCalendarError;

Error returned when interacting two Dates with non-singleton calendars.

Examples

use icu::calendar::Date;
use icu::calendar::error::MismatchedCalendarError;
use icu::calendar::options::DateDifferenceOptions;
use icu::calendar::options::DateDurationUnit;

let d1 = Date::try_new_gregorian(2000, 1, 1).unwrap().to_any();
let d2 = Date::try_new_persian(1562, 1, 1).unwrap().to_any();

assert_eq!(
    d1.try_until_with_options(&d2, Default::default())
        .unwrap_err(),
    MismatchedCalendarError,
);

// To compare the dates, convert them to the same calendar.
// Note that the result may differ based on the calendar used,
// e.g if comparing in months and days.

let mut options = DateDifferenceOptions::default();
options.largest_unit = Some(DateDurationUnit::Months);

let diff1 = d1
    .to_calendar(d2.calendar().clone())
    .try_until_with_options(&d2, options)
    .unwrap();
let diff2 = d1
    .try_until_with_options(&d2.to_calendar(d1.calendar().clone()), options)
    .unwrap();

assert_ne!(diff1, diff2);

Trait Implementations

impl Clone for MismatchedCalendarError

fn clone(&self) -> MismatchedCalendarError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MismatchedCalendarError

impl Debug for MismatchedCalendarError

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for MismatchedCalendarError

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Error for MismatchedCalendarError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for MismatchedCalendarError

fn eq(&self, other: &MismatchedCalendarError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MismatchedCalendarError