pub enum Weekday {
Mon = 0,
Tue = 1,
Wed = 2,
Thu = 3,
Fri = 4,
Sat = 5,
Sun = 6,
}Expand description
The day of week.
The order of the days of week depends on the context.
(This is why this type does not implement PartialOrd or Ord traits.)
One should prefer *_from_monday or *_from_sunday methods to get the correct result.
§Example
use chrono::Weekday;
let monday = "Monday".parse::<Weekday>().unwrap();
assert_eq!(monday, Weekday::Mon);
let sunday = Weekday::try_from(6).unwrap();
assert_eq!(sunday, Weekday::Sun);
assert_eq!(sunday.num_days_from_monday(), 6); // starts counting with Monday = 0
assert_eq!(sunday.number_from_monday(), 7); // starts counting with Monday = 1
assert_eq!(sunday.num_days_from_sunday(), 0); // starts counting with Sunday = 0
assert_eq!(sunday.number_from_sunday(), 1); // starts counting with Sunday = 1
assert_eq!(sunday.succ(), monday);
assert_eq!(sunday.pred(), Weekday::Sat);Variants§
Mon = 0
Monday.
Tue = 1
Tuesday.
Wed = 2
Wednesday.
Thu = 3
Thursday.
Fri = 4
Friday.
Sat = 5
Saturday.
Sun = 6
Sunday.
Implementations§
source§impl Weekday
impl Weekday
sourcepub const fn succ(&self) -> Weekday
pub const fn succ(&self) -> Weekday
The next day in the week.
w: | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
w.succ(): | Tue | Wed | Thu | Fri | Sat | Sun | Mon |
sourcepub const fn pred(&self) -> Weekday
pub const fn pred(&self) -> Weekday
The previous day in the week.
w: | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
w.pred(): | Sun | Mon | Tue | Wed | Thu | Fri | Sat |
sourcepub const fn number_from_monday(&self) -> u32
pub const fn number_from_monday(&self) -> u32
Returns a day-of-week number starting from Monday = 1. (ISO 8601 weekday number)
w: | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
w.number_from_monday(): | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
sourcepub const fn number_from_sunday(&self) -> u32
pub const fn number_from_sunday(&self) -> u32
Returns a day-of-week number starting from Sunday = 1.
w: | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
w.number_from_sunday(): | 2 | 3 | 4 | 5 | 6 | 7 | 1 |
sourcepub const fn num_days_from_monday(&self) -> u32
pub const fn num_days_from_monday(&self) -> u32
Returns a day-of-week number starting from Monday = 0.
w: | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
w.num_days_from_monday(): | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
§Example
// MTWRFSU is occasionally used as a single-letter abbreviation of the weekdays.
// Use `num_days_from_monday` to index into the array.
const MTWRFSU: [char; 7] = ['M', 'T', 'W', 'R', 'F', 'S', 'U'];
let today = Local::now().weekday();
println!("{}", MTWRFSU[today.num_days_from_monday() as usize]);sourcepub const fn num_days_from_sunday(&self) -> u32
pub const fn num_days_from_sunday(&self) -> u32
Returns a day-of-week number starting from Sunday = 0.
w: | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
w.num_days_from_sunday(): | 1 | 2 | 3 | 4 | 5 | 6 | 0 |
Trait Implementations§
source§impl<'arbitrary> Arbitrary<'arbitrary> for Weekday
impl<'arbitrary> Arbitrary<'arbitrary> for Weekday
source§fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<Self>
fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<Self>
Generate an arbitrary value of
Self from the given unstructured data. Read moresource§fn arbitrary_take_rest(u: Unstructured<'arbitrary>) -> Result<Self>
fn arbitrary_take_rest(u: Unstructured<'arbitrary>) -> Result<Self>
Generate an arbitrary value of
Self from the entirety of the given
unstructured data. Read moresource§impl Archive for Weekday
impl Archive for Weekday
source§impl<'de> Deserialize<'de> for Weekday
Available on crate feature serde only.
impl<'de> Deserialize<'de> for Weekday
Available on crate feature
serde only.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>,
Deserialize this value from the given Serde deserializer. Read more
source§impl FromPrimitive for Weekday
impl FromPrimitive for Weekday
Any weekday can be represented as an integer from 0 to 6, which equals to
Weekday::num_days_from_monday in this implementation.
Do not heavily depend on this though; use explicit methods whenever possible.
source§fn from_i64(n: i64) -> Option<Weekday>
fn from_i64(n: i64) -> Option<Weekday>
Converts an
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_u64(n: u64) -> Option<Weekday>
fn from_u64(n: u64) -> Option<Weekday>
Converts an
u64 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>
Converts an
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>
Converts an
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>
Converts an
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>
Converts an
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>
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 moresource§fn from_usize(n: usize) -> Option<Self>
fn from_usize(n: usize) -> Option<Self>
Converts a
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>
Converts an
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>
Converts an
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_u32(n: u32) -> Option<Self>
fn from_u32(n: u32) -> Option<Self>
Converts an
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_u128(n: u128) -> Option<Self>
fn from_u128(n: u128) -> Option<Self>
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 moresource§impl FromStr for Weekday
impl FromStr for Weekday
Parsing a str into a Weekday uses the format %A.
§Example
use chrono::Weekday;
assert_eq!("Sunday".parse::<Weekday>(), Ok(Weekday::Sun));
assert!("any day".parse::<Weekday>().is_err());The parsing is case-insensitive.
assert_eq!("mON".parse::<Weekday>(), Ok(Weekday::Mon));Only the shortest form (e.g. sun) and the longest form (e.g. sunday) is accepted.
assert!("thurs".parse::<Weekday>().is_err());source§impl PartialEq<ArchivedWeekday> for Weekday
impl PartialEq<ArchivedWeekday> for Weekday
source§fn eq(&self, other: &ArchivedWeekday) -> bool
fn eq(&self, other: &ArchivedWeekday) -> bool
This method tests for
self and other values to be equal, and is used
by ==.source§impl PartialEq<Weekday> for ArchivedWeekday
impl PartialEq<Weekday> for ArchivedWeekday
source§impl PartialEq for Weekday
impl PartialEq for Weekday
source§impl TryFrom<u8> for Weekday
impl TryFrom<u8> for Weekday
Any weekday can be represented as an integer from 0 to 6, which equals to
Weekday::num_days_from_monday in this implementation.
Do not heavily depend on this though; use explicit methods whenever possible.
impl Copy for Weekday
impl Eq for Weekday
impl StructuralPartialEq for Weekday
Auto Trait Implementations§
impl RefUnwindSafe for Weekday
impl Send for Weekday
impl Sync for Weekday
impl Unpin for Weekday
impl UnwindSafe for Weekday
Blanket Implementations§
source§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
source§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
source§impl<T> ArchiveUnsized for Twhere
T: Archive,
impl<T> ArchiveUnsized for Twhere
T: Archive,
§type Archived = <T as Archive>::Archived
type Archived = <T as Archive>::Archived
The archived counterpart of this type. Unlike
Archive, it may be unsized. Read more§type MetadataResolver = ()
type MetadataResolver = ()
The resolver for the metadata of this type. Read more
source§unsafe fn resolve_metadata(
&self,
_: usize,
_: <T as ArchiveUnsized>::MetadataResolver,
_: *mut <<T as ArchiveUnsized>::Archived as ArchivePointee>::ArchivedMetadata
)
unsafe fn resolve_metadata( &self, _: usize, _: <T as ArchiveUnsized>::MetadataResolver, _: *mut <<T as ArchiveUnsized>::Archived as ArchivePointee>::ArchivedMetadata )
Creates the archived version of the metadata for this value at the given position and writes
it to the given output. Read more
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
Mutably borrows from an owned value. Read more