Struct koyomi::Era

source ·
pub struct Era { /* private fields */ }
Expand description

元号

https://ja.wikipedia.org/wiki/元号

Implementations§

元号名を返す

Examples
use koyomi::{Date, era};

let date = Date::from_ymd(2018, 1, 1).unwrap();
let e = era(&date).unwrap();
assert_eq!(e.name(), "平成");

元号に基づいた「年」を返す

Examples
use koyomi::{Date, era};

let date = Date::from_ymd(2018, 1, 1).unwrap();
let e = era(&date).unwrap();
assert_eq!(e.year(), 30);

元号の文字列表現を返す 初年度は「1年」ではなく「元年」

Examples
use koyomi::{Date, era};

let date = Date::from_ymd(2018, 1, 1).unwrap();
let e = era(&date).unwrap();
assert_eq!(e.format(), "平成30年");

let date = Date::from_ymd(1989, 1, 10).unwrap();
let e = era(&date).unwrap();
assert_eq!(e.format(), "平成元年");

Trait Implementations§

Formats the value using the given formatter. Read more
This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.