pub enum Month {
January = 0,
February = 1,
March = 2,
April = 3,
May = 4,
June = 5,
July = 6,
August = 7,
September = 8,
October = 9,
November = 10,
December = 11,
}
Expand description
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
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§
source§impl Month
impl Month
sourcepub const fn succ(&self) -> Month
pub const fn succ(&self) -> Month
The next month.
m : | January | February | ... | December |
---|---|---|---|---|
m.succ() : | February | March | ... | January |
sourcepub const fn pred(&self) -> Month
pub const fn pred(&self) -> Month
The previous month.
m : | January | February | ... | December |
---|---|---|---|---|
m.pred() : | December | January | ... | November |
sourcepub const fn number_from_month(&self) -> u32
pub 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 |
Trait Implementations§
source§impl<'de> Deserialize<'de> for Month
impl<'de> Deserialize<'de> for Month
source§fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
D: Deserializer<'de>,
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
D: Deserializer<'de>,
source§impl FromPrimitive for Month
impl FromPrimitive for Month
source§fn from_u64(n: u64) -> Option<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)
source§fn from_i64(n: i64) -> Option<Month>
fn from_i64(n: i64) -> Option<Month>
i64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_u32(n: u32) -> Option<Month>
fn from_u32(n: u32) -> Option<Month>
u32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_isize(n: isize) -> Option<Self>
fn from_isize(n: isize) -> Option<Self>
isize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_i8(n: i8) -> Option<Self>
fn from_i8(n: i8) -> Option<Self>
i8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_i16(n: i16) -> Option<Self>
fn from_i16(n: i16) -> Option<Self>
i16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_i32(n: i32) -> Option<Self>
fn from_i32(n: i32) -> Option<Self>
i32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_i128(n: i128) -> Option<Self>
fn from_i128(n: i128) -> Option<Self>
i128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read moresource§fn from_usize(n: usize) -> Option<Self>
fn from_usize(n: usize) -> Option<Self>
usize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_u8(n: u8) -> Option<Self>
fn from_u8(n: u8) -> Option<Self>
u8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_u16(n: u16) -> Option<Self>
fn from_u16(n: u16) -> Option<Self>
u16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned.source§fn from_u128(n: u128) -> Option<Self>
fn from_u128(n: u128) -> Option<Self>
u128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read moresource§impl FromStr for Month
impl FromStr for Month
Parsing a str
into a Month
uses the format %B
.
§Example
use chrono::Month;
assert_eq!("January".parse::<Month>(), Ok(Month::January));
assert!("any day".parse::<Month>().is_err());
The parsing is case-insensitive.
assert_eq!("fEbruARy".parse::<Month>(), Ok(Month::February));
Only the shortest form (e.g. jan
) and the longest form (e.g. january
) is accepted.
assert!("septem".parse::<Month>().is_err());
assert!("Augustin".parse::<Month>().is_err());
source§impl Ord for Month
impl Ord for Month
source§impl PartialOrd for Month
impl PartialOrd for Month
impl Copy for Month
impl Eq for Month
impl StructuralPartialEq for Month
Auto Trait Implementations§
impl Freeze for Month
impl RefUnwindSafe for Month
impl Send for Month
impl Sync for Month
impl Unpin for Month
impl UnwindSafe for Month
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)