# Enum chrono::format::Numeric [−] [src]

    pub enum Numeric {
        Year,
        YearDiv100,
        YearMod100,
        IsoYear,
        IsoYearDiv100,
        IsoYearMod100,
        Month,
        Day,
        WeekFromSun,
        WeekFromMon,
        IsoWeek,
        NumDaysFromSun,
        WeekdayFromMon,
        Ordinal,
        Hour,
        Hour12,
        Minute,
        Second,
        Nanosecond,
        Timestamp,
        Internal(InternalNumeric),
    }

Numeric item types. They have associated formatting width (FW) and parsing width (PW).

The formatting width is the minimal width to be formatted. If the number is too short, and the padding is not `Pad::None`, then it is left-padded. If the number is too long or (in some cases) negative, it is printed as is.

The parsing width is the maximal width to be scanned. The parser only tries to consume from one to given number of digits (greedily). It also trims the preceding whitespace if any. It cannot parse the negative number, so some date and time cannot be formatted then parsed with the same formatting items.

## Variants

`Year`

Full Gregorian year (FW=4, PW=∞). May accept years before 1 BCE or after 9999 CE, given an initial sign.

`YearDiv100`

Gregorian year divided by 100 (century number; FW=PW=2). Implies the non-negative year.

`YearMod100`

Gregorian year modulo 100 (FW=PW=2). Cannot be negative.

`IsoYear`

Year in the ISO week date (FW=4, PW=∞). May accept years before 1 BCE or after 9999 CE, given an initial sign.

`IsoYearDiv100`

Year in the ISO week date, divided by 100 (FW=PW=2). Implies the non-negative year.

`IsoYearMod100`

Year in the ISO week date, modulo 100 (FW=PW=2). Cannot be negative.

`Month`

Month (FW=PW=2).

`Day`

Day of the month (FW=PW=2).

`WeekFromSun`

Week number, where the week 1 starts at the first Sunday of January (FW=PW=2).

`WeekFromMon`

Week number, where the week 1 starts at the first Monday of January (FW=PW=2).

`IsoWeek`

Week number in the ISO week date (FW=PW=2).

`NumDaysFromSun`

Day of the week, where Sunday = 0 and Saturday = 6 (FW=PW=1).

`WeekdayFromMon`

Day of the week, where Monday = 1 and Sunday = 7 (FW=PW=1).

`Ordinal`

Day of the year (FW=PW=3).

`Hour`

Hour number in the 24-hour clocks (FW=PW=2).

`Hour12`

Hour number in the 12-hour clocks (FW=PW=2).

`Minute`

The number of minutes since the last whole hour (FW=PW=2).

`Second`

The number of seconds since the last whole minute (FW=PW=2).

`Nanosecond`

The number of nanoseconds since the last whole second (FW=PW=9). Note that this is not left-aligned; see also `Fixed::Nanosecond`.

`Timestamp`

The number of non-leap seconds since the midnight UTC on January 1, 1970 (FW=1, PW=∞). For formatting, it assumes UTC upon the absence of time zone offset.

`Internal(InternalNumeric)`

Internal uses only.

This item exists so that one can add additional internal-only formatting without breaking major compatibility (as enum variants cannot be selectively private).

## Trait Implementations

### `impl Clone for Numeric` [src]

#### `fn clone(&self) -> Numeric` [src]

Returns a copy of the value. Read more

#### `pub fn clone_from(&mut self, source: &Self)`1.0.0 [src]

Performs copy-assignment from `source`. Read more

### `impl Debug for Numeric` [src]

#### `fn fmt(&self, f: &mut Formatter<'_>) -> Result` [src]

Formats the value using the given formatter. Read more

### `impl Eq for Numeric` [src]

### `impl PartialEq<Numeric> for Numeric` [src]

#### `fn eq(&self, other: &Numeric) -> bool` [src]

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

#### `fn ne(&self, other: &Numeric) -> bool` [src]

This method tests for `!=`.

### `impl StructuralEq for Numeric` [src]

### `impl StructuralPartialEq for Numeric` [src]

## Auto Trait Implementations

### `impl RefUnwindSafe for Numeric`

### `impl Send for Numeric`

### `impl Sync for Numeric`

### `impl Unpin for Numeric`

### `impl UnwindSafe for Numeric`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T` [src]

#### `pub fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(self) -> U` [src]

Performs the conversion.

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `pub fn to_owned(&self) -> T` [src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `pub fn clone_into(&self, target: &mut T)` [src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into`)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.