Enum `Month`

pub enum Month

The month of the year.

This enum is just a convenience implementation. The month in dates created by DateLike objects does not return this enum.

It is possible to convert from a date to a month independently

use chrono::prelude::*;
let date = Utc.with_ymd_and_hms(2019, 10, 28, 9, 10, 11).unwrap();
// `2019-10-28T09:10:11Z`
let month = Month::try_from(u8::try_from(date.month()).unwrap()).ok();
assert_eq!(month, Some(Month::October))

Or from a Month to an integer usable by dates

# use chrono::prelude::*;
let month = Month::January;
let dt = Utc.with_ymd_and_hms(2019, month.number_from_month(), 28, 9, 10, 11).unwrap();
assert_eq!((dt.year(), dt.month(), dt.day()), (2019, 1, 28));

Allows mapping from and to month, from 1-January to 12-December. Can be Serialized/Deserialized with serde

Variants

January = 0: January
February = 1: February
March = 2: March
April = 3: April
May = 4: May
June = 5: June
July = 6: July
August = 7: August
September = 8: September
October = 9: October
November = 10: November
December = 11: December

Implementations

`impl Month`

const fn succ(&self) -> Month

The next month.

`m`:	`January`	`February`	`...`	`December`
`m.succ()`:	`February`	`March`	`...`	`January`

const fn pred(&self) -> Month

The previous month.

`m`:	`January`	`February`	`...`	`December`
`m.pred()`:	`December`	`January`	`...`	`November`

const fn number_from_month(&self) -> u32

Returns a month-of-year number starting from January = 1.

`m`:	`January`	`February`	`...`	`December`
`m.number_from_month()`:	1	2	`...`	12

const fn name(&self) -> &'static str

Get the name of the month

use chrono::Month;

assert_eq!(Month::January.name(), "January")

fn num_days(&self, year: i32) -> Option<u8>

Get the length in days of the month

Yields None if year is out of range for NaiveDate.

Trait Implementations

`impl Clone for Month`

fn clone(&self) -> Month

`impl Copy for Month`

`impl Debug for Month`

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

`impl Eq for Month`

`impl FromPrimitive for Month`

fn from_u64(n: u64) -> Option<Month>

Returns an Option<Month> from a i64, assuming a 1-index, January = 1.

Month::from_i64(n: i64): | 1 | 2 | ... | 12 ---------------------------| -------------------- | --------------------- | ... | ----- ``: | Some(Month::January) | Some(Month::February) | ... | Some(Month::December)

fn from_i64(n: i64) -> Option<Month>

fn from_u32(n: u32) -> Option<Month>

`impl FromStr for Month`

type Err = ParseMonthError;
fn from_str(s: &str) -> Result<Self, Self::Err>

`impl Hash for Month`

fn hash<__H: Hasher>(&self, state: &mut __H)

`impl Ord for Month`

fn cmp(&self, other: &Month) -> Ordering

`impl PartialEq for Month`

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

`impl PartialOrd for Month`

fn partial_cmp(&self, other: &Month) -> Option<Ordering>

`impl StructuralPartialEq for Month`

`impl TryFrom<u8> for Month`

type Error = OutOfRange;
fn try_from(value: u8) -> Result<Self, Self::Error>

Auto Trait Implementations

`impl Freeze for Month`

`impl RefUnwindSafe for Month`

`impl Send for Month`

`impl Sync for Month`

`impl Unpin for Month`

`impl UnsafeUnpin for Month`

`impl UnwindSafe for Month`

Blanket Implementations

`impl<T> Any for Month where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for Month where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for Month where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> CloneToUninit for Month where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for Month`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> ToOwned for Month where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T, U> Into for Month where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for Month where U: Into<T>,`

type Error = Infallible;
fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

`impl<T, U> TryInto for Month where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>