Enum DateMethod

pub enum DateMethod {
    Add,
    Sub,
    Set,
    Format,
    StartOf,
    EndOf,
    Diff,
    Tz,
    IsSame,
    IsBefore,
    IsAfter,
    IsSameOrBefore,
    IsSameOrAfter,
    Second,
    Minute,
    Hour,
    Day,
    DayOfYear,
    Week,
    Weekday,
    Month,
    Quarter,
    Year,
    Timestamp,
    OffsetName,
    IsValid,
    IsYesterday,
    IsToday,
    IsTomorrow,
    IsLeapYear,
}

日期方法枚举

定义了所有可用的日期操作方法

Variants

Add

日期加法：向日期添加时间间隔

Sub

日期减法：从日期减去时间间隔

Set

设置日期组件：设置年、月、日等特定组件

Format

格式化：将日期格式化为字符串

StartOf

开始时间：获取某个时间单位的开始时间（如月初、年初）

EndOf

结束时间：获取某个时间单位的结束时间（如月末、年末）

Diff

时间差：计算两个日期之间的差值

Tz

时区转换：将日期转换到指定时区

IsSame

相同判断：检查两个日期是否相同

IsBefore

早于判断：检查第一个日期是否早于第二个日期

IsAfter

晚于判断：检查第一个日期是否晚于第二个日期

IsSameOrBefore

相同或早于：检查第一个日期是否相同或早于第二个日期

IsSameOrAfter

相同或晚于：检查第一个日期是否相同或晚于第二个日期

Second

秒：获取日期的秒数

Minute

分钟：获取日期的分钟数

Hour

小时：获取日期的小时数

Day

日：获取日期的天数

DayOfYear

年中的天：获取日期在一年中的第几天

Week

周：获取日期在一年中的第几周

Weekday

星期几：获取日期是星期几

Month

月：获取日期的月份

Quarter

季度：获取日期所在的季度

Year

年：获取日期的年份

Timestamp

时间戳：获取日期的Unix时间戳

OffsetName

时区名称：获取日期的时区名称

IsValid

有效性检查：检查日期是否有效

IsYesterday

昨天判断：检查日期是否为昨天

IsToday

今天判断：检查日期是否为今天

IsTomorrow

明天判断：检查日期是否为明天

IsLeapYear

闰年判断：检查日期所在年份是否为闰年

Trait Implementations

impl Clone for DateMethod

fn clone(&self) -> DateMethod

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DateMethod

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for DateMethod

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'_derivative_strum> From<&'_derivative_strum DateMethod> for &'static str

fn from(x: &'_derivative_strum DateMethod) -> &'static str

Converts to this type from the input type.

impl From<&DateMethod> for Rc<dyn FunctionDefinition>

fn from(value: &DateMethod) -> Self

将日期方法枚举转换为函数定义

为每个日期方法创建相应的函数定义，包括函数签名和实现

impl From<DateMethod> for &'static str

fn from(x: DateMethod) -> &'static str

Converts to this type from the input type.

impl FromStr for DateMethod

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<DateMethod, <Self as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for DateMethod

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IntoEnumIterator for DateMethod

type Iterator = DateMethodIter

fn iter() -> DateMethodIter

impl PartialEq for DateMethod

fn eq(&self, other: &DateMethod) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<&str> for DateMethod

type Error = ParseError

The type returned in the event of a conversion error.

fn try_from(s: &str) -> Result<DateMethod, <Self as TryFrom<&str>>::Error>

Performs the conversion.

impl Copy for DateMethod

impl Eq for DateMethod

impl IsEnabled for DateMethod

impl StructuralPartialEq for DateMethod