Struct chrono::Months

pub struct Months(_);

A duration in calendar months

Implementations

impl Months

pub fn new(num: u32) -> Self

Construct a new Months from a number of months

Trait Implementations

impl Add<Months> for NaiveDate

fn add(self, months: Months) -> Self::Output

An addition of months to NaiveDate clamped to valid days in resulting month.

Panics

Panics if the resulting date would be out of range.

Example

use chrono::{Duration, NaiveDate, Months};

let from_ymd = NaiveDate::from_ymd;

assert_eq!(from_ymd(2014, 1, 1) + Months::new(1), from_ymd(2014, 2, 1));
assert_eq!(from_ymd(2014, 1, 1) + Months::new(11), from_ymd(2014, 12, 1));
assert_eq!(from_ymd(2014, 1, 1) + Months::new(12), from_ymd(2015, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) + Months::new(13), from_ymd(2015, 2, 1));
assert_eq!(from_ymd(2014, 1, 31) + Months::new(1), from_ymd(2014, 2, 28));
assert_eq!(from_ymd(2020, 1, 31) + Months::new(1), from_ymd(2020, 2, 29));

type Output = NaiveDate

The resulting type after applying the + operator.

impl Clone for Months

fn clone(&self) -> Months

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Months

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

Formats the value using the given formatter.

impl Hash for Months

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 PartialEq<Months> for Months

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd<Months> for Months

fn partial_cmp(&self, other: &Months) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub<Months> for NaiveDate

fn sub(self, months: Months) -> Self::Output

A subtraction of Months from NaiveDate clamped to valid days in resulting month.

Panics

Panics if the resulting date would be out of range.

Example

use chrono::{Duration, NaiveDate, Months};

let from_ymd = NaiveDate::from_ymd;

assert_eq!(from_ymd(2014, 1, 1) - Months::new(11), from_ymd(2013, 2, 1));
assert_eq!(from_ymd(2014, 1, 1) - Months::new(12), from_ymd(2013, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Months::new(13), from_ymd(2012, 12, 1));

type Output = NaiveDate

The resulting type after applying the - operator.

impl Copy for Months

impl Eq for Months

impl StructuralEq for Months

impl StructuralPartialEq for Months