[−][src]Struct koyomi::Date
日付
カレンダーのベースとなる構造体。 文字列または(年, 月, 日)から生成する。
Methods
impl Date
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pub fn parse(fmt: &str) -> KoyomiResult<Self>
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文字列からオブジェクトを生成する
文字列は Y-m-d
か Y/m/d
形式のみ受け付ける
Examples
use koyomi::Date; let date = Date::parse("2018-01-01"); assert!(date.is_ok()); let date = Date::parse("2018/01/01"); assert!(date.is_ok()); let date = Date::parse("2018-01-32"); assert!(date.is_err());
pub fn from_ymd(year: i32, month: u32, day: u32) -> KoyomiResult<Self>
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年月日からオブジェクトを生成する
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 1); assert!(date.is_ok()); let date = Date::from_ymd(2018, 13, 1); assert!(date.is_err());
pub fn day(&self) -> u32
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「日」を返す
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 31).unwrap(); assert_eq!(date.day(), 31);
pub fn era(&self) -> Option<Era>
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「元号」を返す
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 1).unwrap(); assert_eq!(date.era().unwrap().name(), "平成");
pub fn holiday(&self) -> Option<String>
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「祝祭日」を返す
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 1).unwrap(); assert_eq!(date.holiday().unwrap(), "元日"); let date = Date::from_ymd(2018, 1, 2).unwrap(); assert_eq!(date.holiday(), None);
pub fn month(&self) -> u32
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「月」を返す
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 12, 1).unwrap(); assert_eq!(date.month(), 12);
pub fn num_days(&self, date: &Date) -> i64
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日付間の期間が何日あるかを返す
Examples
use koyomi::Date; let from = Date::from_ymd(2018, 1, 1).unwrap(); let until = Date::from_ymd(2018, 12, 31).unwrap(); assert_eq!(until.num_days(&from), 364); // うるう年 let from = Date::from_ymd(2016, 1, 1).unwrap(); let until = Date::from_ymd(2016, 12, 31).unwrap(); assert_eq!(until.num_days(&from), 365);
pub fn to_string(&self) -> String
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日付の文字列表現を返す
フォーマットは Y-m-d
形式となる
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 1).unwrap(); assert_eq!(date.to_string(), "2018-01-01");
pub fn tomorrow(&self) -> KoyomiResult<Self>
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翌日の日付を返す
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 1).unwrap(); let tomorrow = date.tomorrow(); assert_eq!(tomorrow.unwrap().to_string(), "2018-01-02");
pub fn weekday(&self) -> &Weekday
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「曜日」を返す
Examples
use koyomi::{Date, Weekday}; let date = Date::from_ymd(2018, 1, 1).unwrap(); assert_eq!(date.weekday(), &Weekday::Monday);
pub fn year(&self) -> i32
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「年」を返す
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 1).unwrap(); assert_eq!(date.year(), 2018);
pub fn yesterday(&self) -> KoyomiResult<Self>
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前日の日付を返す
Examples
use koyomi::Date; let date = Date::from_ymd(2018, 1, 1).unwrap(); let yesterday = date.yesterday(); assert_eq!(yesterday.unwrap().to_string(), "2017-12-31");
Trait Implementations
impl Clone for Date
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impl Debug for Date
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impl Display for Date
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impl Eq for Date
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impl Ord for Date
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fn cmp(&self, other: &Date) -> Ordering
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日付オブジェクト同士を比較可能にする
fn max(self, other: Self) -> Self
1.21.0[src]
fn min(self, other: Self) -> Self
1.21.0[src]
fn clamp(self, min: Self, max: Self) -> Self
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impl PartialEq<Date> for Date
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impl PartialOrd<Date> for Date
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fn partial_cmp(&self, other: &Date) -> Option<Ordering>
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日付オブジェクト同士を比較可能にする
#[must_use]
fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]
fn le(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]
fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]
fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
impl StructuralEq for Date
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impl StructuralPartialEq for Date
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Auto Trait Implementations
impl RefUnwindSafe for Date
impl Send for Date
impl Sync for Date
impl Unpin for Date
impl UnwindSafe for Date
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,