Enum chrono::Month [−][src]
pub enum Month {
January,
February,
March,
April,
May,
June,
July,
August,
September,
October,
November,
December,
}
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 num_traits::FromPrimitive;
use chrono::prelude::*;
let date = Utc.ymd(2019, 10, 28).and_hms(9, 10, 11);
// `2019-10-28T09:10:11Z`
let month = Month::from_u32(date.month());
assert_eq!(month, Some(Month::October))
Or from a Month to an integer usable by dates
let month = Month::January;
let dt = Utc.ymd(2019, month.number_from_month(), 28).and_hms(9, 10, 11);
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
January
February
February
March
March
April
April
May
May
June
June
July
July
August
August
September
September
October
October
November
November
December
December
Implementations
The next month.
m : | January | February | ... | December |
---|---|---|---|---|
m.succ() : | February | March | ... | January |
The previous month.
m : | January | February | ... | December |
---|---|---|---|---|
m.succ() : | December | January | ... | November |
Returns a month-of-year number starting from January = 1.
m : | January | February | ... | December |
---|---|---|---|---|
m.number_from_month() : | 1 | 2 | ... | 12 |
Trait Implementations
Returns an Option
Month::from_i64(n: i64)
: | 1
| 2
| … | 12
—————————| –––––––––– | ——————— | … | —–
``: | Some(Month::January) | Some(Month::February) | … | Some(Month::December)
Converts an i64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an isize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts a usize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts a f32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Parsing a str
into a Month
uses the format %W
.
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());
Auto Trait Implementations
impl RefUnwindSafe for Month
impl UnwindSafe for Month
Blanket Implementations
Mutably borrows from an owned value. Read more