Struct time::Time

[+] Show declaration

pub struct Time { /* fields omitted */ }

[−] Expand description

The clock time within a given date. Nanosecond precision.

All minutes are assumed to have exactly 60 seconds; no attempt is made to handle leap seconds (either positive or negative).

When comparing two Times, they are assumed to be in the same calendar date.

Implementations

impl Time[−]

pub const fn midnight() -> Self[−]

Create a Time that is exactly midnight.

assert_eq!(Time::midnight(), time!(0:00));

pub const fn try_from_hms(
    hour: u8,
    minute: u8,
    second: u8
) -> Result<Self, ComponentRange>[−]

Attempt to create a Time from the hour, minute, and second.

assert!(Time::try_from_hms(1, 2, 3).is_ok());

Returns None if any component is not valid.

assert!(Time::try_from_hms(24, 0, 0).is_err()); // 24 isn't a valid hour.
assert!(Time::try_from_hms(0, 60, 0).is_err()); // 60 isn't a valid minute.
assert!(Time::try_from_hms(0, 0, 60).is_err()); // 60 isn't a valid second.

This function is const fn when using rustc >= 1.46.

pub const fn try_from_hms_milli(
    hour: u8,
    minute: u8,
    second: u8,
    millisecond: u16
) -> Result<Self, ComponentRange>[−]

Attempt to create a Time from the hour, minute, second, and millisecond.

assert!(Time::try_from_hms_milli(1, 2, 3, 4).is_ok());

Returns None if any component is not valid.

assert!(Time::try_from_hms_milli(24, 0, 0, 0).is_err()); // 24 isn't a valid hour.
assert!(Time::try_from_hms_milli(0, 60, 0, 0).is_err()); // 60 isn't a valid minute.
assert!(Time::try_from_hms_milli(0, 0, 60, 0).is_err()); // 60 isn't a valid second.
assert!(Time::try_from_hms_milli(0, 0, 0, 1_000).is_err()); // 1_000 isn't a valid millisecond.

This function is const fn when using rustc >= 1.46.

pub const fn try_from_hms_micro(
    hour: u8,
    minute: u8,
    second: u8,
    microsecond: u32
) -> Result<Self, ComponentRange>[−]

Attempt to create a Time from the hour, minute, second, and microsecond.

assert!(Time::try_from_hms_micro(1, 2, 3, 4).is_ok());

Returns None if any component is not valid.

assert!(Time::try_from_hms_micro(24, 0, 0, 0).is_err()); // 24 isn't a valid hour.
assert!(Time::try_from_hms_micro(0, 60, 0, 0).is_err()); // 60 isn't a valid minute.
assert!(Time::try_from_hms_micro(0, 0, 60, 0).is_err()); // 60 isn't a valid second.
assert!(Time::try_from_hms_micro(0, 0, 0, 1_000_000).is_err()); // 1_000_000 isn't a valid microsecond.

This function is const fn when using rustc >= 1.46.

pub const fn try_from_hms_nano(
    hour: u8,
    minute: u8,
    second: u8,
    nanosecond: u32
) -> Result<Self, ComponentRange>[−]

Attempt to create a Time from the hour, minute, second, and nanosecond.

assert!(Time::try_from_hms_nano(1, 2, 3, 4).is_ok());

Returns None if any component is not valid.

assert!(Time::try_from_hms_nano(24, 0, 0, 0).is_err()); // 24 isn't a valid hour.
assert!(Time::try_from_hms_nano(0, 60, 0, 0).is_err()); // 60 isn't a valid minute.
assert!(Time::try_from_hms_nano(0, 0, 60, 0).is_err()); // 60 isn't a valid second.
assert!(Time::try_from_hms_nano(0, 0, 0, 1_000_000_000).is_err()); // 1_000_000_000 isn't a valid nanosecond.

This function is const fn when using rustc >= 1.46.

pub fn now() -> Self[−]

👎 Deprecated since 0.2.7:

This method returns a value that assumes an offset of UTC.

Create a Time representing the current time (UTC).

println!("{:?}", Time::now());

pub const fn hour(self) -> u8[−]

Get the clock hour.

The returned value will always be in the range 0..24.

assert_eq!(time!(0:00:00).hour(), 0);
assert_eq!(time!(23:59:59).hour(), 23);

pub const fn minute(self) -> u8[−]

Get the minute within the hour.

The returned value will always be in the range 0..60.

assert_eq!(time!(0:00:00).minute(), 0);
assert_eq!(time!(23:59:59).minute(), 59);

pub const fn second(self) -> u8[−]

Get the second within the minute.

The returned value will always be in the range 0..60.

assert_eq!(time!(0:00:00).second(), 0);
assert_eq!(time!(23:59:59).second(), 59);

pub const fn millisecond(self) -> u16[−]

Get the milliseconds within the second.

The returned value will always be in the range 0..1_000.

assert_eq!(time!(0:00).millisecond(), 0);
assert_eq!(time!(23:59:59.999).millisecond(), 999);

pub const fn microsecond(self) -> u32[−]

Get the microseconds within the second.

The returned value will always be in the range 0..1_000_000.

assert_eq!(time!(0:00).microsecond(), 0);
assert_eq!(time!(23:59:59.999_999).microsecond(), 999_999);

pub const fn nanosecond(self) -> u32[−]

Get the nanoseconds within the second.

The returned value will always be in the range 0..1_000_000_000.

assert_eq!(time!(0:00).nanosecond(), 0);
assert_eq!(time!(23:59:59.999_999_999).nanosecond(), 999_999_999);

impl Time[−]

[−] Expand description

Methods that allow formatting the Time.

pub fn format(self, format: impl AsRef<str>) -> String[−]

Format the Time using the provided string.

assert_eq!(time!(0:00).format("%r"), "12:00:00 am");

pub fn lazy_format(self, format: impl AsRef<str>) -> impl Display[−]

Format the Time using the provided string.

assert_eq!(time!(0:00).lazy_format("%r").to_string(), "12:00:00 am");

pub fn parse(s: impl AsRef<str>, format: impl AsRef<str>) -> Result<Self, Error>[−]

Attempt to parse a Time using the provided string.

assert_eq!(
    Time::parse("0:00:00", "%T"),
    Ok(time!(0:00))
);
assert_eq!(
    Time::parse("23:59:59", "%T"),
    Ok(time!(23:59:59))
);
assert_eq!(
    Time::parse("12:00:00 am", "%r"),
    Ok(time!(0:00))
);
assert_eq!(
    Time::parse("12:00:00 pm", "%r"),
    Ok(time!(12:00))
);
assert_eq!(
    Time::parse("11:59:59 pm", "%r"),
    Ok(time!(23:59:59))
);

Trait Implementations

impl Add<Duration> for Time[+]

type Output = Self

The resulting type after applying the + operator.

fn add(self, duration: Duration) -> Self::Output[−]

Add the sub-day time of the Duration to the Time. Wraps on overflow.

assert_eq!(time!(12:00) + 2.hours(), time!(14:00));
assert_eq!(time!(0:00:01) + (-2).seconds(), time!(23:59:59));

impl Add<Duration> for Time[+]

type Output = Self

The resulting type after applying the + operator.

fn add(self, duration: StdDuration) -> Self::Output[−]

Add the sub-day time of the std::time::Duration to the Time. Wraps on overflow.

assert_eq!(time!(12:00) + 2.std_hours(), time!(14:00));
assert_eq!(time!(23:59:59) + 2.std_seconds(), time!(0:00:01));

impl AddAssign<Duration> for Time[+]

fn add_assign(&mut self, duration: Duration)[−]

Add the sub-day time of the Duration to the existing Time. Wraps on overflow.

let mut time = time!(12:00);
time += 2.hours();
assert_eq!(time, time!(14:00));

let mut time = time!(0:00:01);
time += (-2).seconds();
assert_eq!(time, time!(23:59:59));

impl AddAssign<Duration> for Time[+]

fn add_assign(&mut self, duration: StdDuration)[−]

Add the sub-day time of the std::time::Duration to the existing Time. Wraps on overflow.

let mut time = time!(12:00);
time += 2.std_hours();
assert_eq!(time, time!(14:00));

let mut time = time!(23:59:59);
time += 2.std_seconds();
assert_eq!(time, time!(0:00:01));

impl Clone for Time[+]

[+] Show hidden undocumented items

fn clone(&self) -> Time[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Copy for Time

impl Debug for Time[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl Display for Time[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl Eq for Time

impl Hash for Time[+]

[+] Show hidden undocumented items

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl Ord for Time[+]

[+] Show hidden undocumented items

fn cmp(&self, other: &Self) -> Ordering[−]

This method returns an Ordering between self and other.

[+] Expand attributes

#[must_use]pub fn max(self, other: Self) -> Self[−]

Compares and returns the maximum of two values.

[+] Expand attributes

#[must_use]pub fn min(self, other: Self) -> Self[−]

Compares and returns the minimum of two values.

[+] Expand attributes

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self[−]

Restrict a value to a certain interval.

impl PartialEq<Time> for Time[+]

[+] Show hidden undocumented items

fn eq(&self, other: &Time) -> bool[−]

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

fn ne(&self, other: &Time) -> bool[−]

This method tests for !=.

impl PartialOrd<Time> for Time[+]

[+] Show hidden undocumented items

fn partial_cmp(&self, other: &Self) -> Option<Ordering>[−]

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

[+] Expand attributes

#[must_use]pub fn lt(&self, other: &Rhs) -> bool[−]

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

[+] Expand attributes

#[must_use]pub fn le(&self, other: &Rhs) -> bool[−]

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

[+] Expand attributes

#[must_use]pub fn gt(&self, other: &Rhs) -> bool[−]

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

[+] Expand attributes

#[must_use]pub 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 StructuralEq for Time

impl StructuralPartialEq for Time

impl Sub<Duration> for Time[+]

type Output = Self

The resulting type after applying the - operator.

fn sub(self, duration: Duration) -> Self::Output[−]

Subtract the sub-day time of the Duration from the Time. Wraps on overflow.

assert_eq!(
    time!(14:00) - 2.hours(),
    time!(12:00)
);
assert_eq!(
    time!(23:59:59) - (-2).seconds(),
    time!(0:00:01)
);

impl Sub<Duration> for Time[+]

type Output = Self

The resulting type after applying the - operator.

fn sub(self, duration: StdDuration) -> Self::Output[−]

Subtract the sub-day time of the std::time::Duration from the Time. Wraps on overflow.

assert_eq!(time!(14:00) - 2.std_hours(), time!(12:00));
assert_eq!(time!(0:00:01) - 2.std_seconds(), time!(23:59:59));

impl Sub<Time> for Time[+]

type Output = Duration

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output[−]

Subtract two Times, returning the Duration between. This assumes both Times are in the same calendar day.

assert_eq!(time!(0:00) - time!(0:00), 0.seconds());
assert_eq!(time!(1:00) - time!(0:00), 1.hours());
assert_eq!(time!(0:00) - time!(1:00), (-1).hours());
assert_eq!(time!(0:00) - time!(23:00), (-23).hours());

impl SubAssign<Duration> for Time[+]

fn sub_assign(&mut self, duration: Duration)[−]

Subtract the sub-day time of the Duration from the existing Time. Wraps on overflow.

let mut time = time!(14:00);
time -= 2.hours();
assert_eq!(time, time!(12:00));

let mut time = time!(23:59:59);
time -= (-2).seconds();
assert_eq!(time, time!(0:00:01));

impl SubAssign<Duration> for Time[+]

fn sub_assign(&mut self, duration: StdDuration)[−]

Subtract the sub-day time of the std::time::Duration from the existing Time. Wraps on overflow.

let mut time = time!(14:00);
time -= 2.std_hours();
assert_eq!(time, time!(12:00));

let mut time = time!(0:00:01);
time -= 2.std_seconds();
assert_eq!(time, time!(23:59:59));