Struct gstreamer::ClockTime
[−]
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pub struct ClockTime(pub Option<u64>);
Methods
impl ClockTime
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fn hours(&self) -> Option<u64>
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fn minutes(&self) -> Option<u64>
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fn seconds(&self) -> Option<u64>
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fn mseconds(&self) -> Option<u64>
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fn useconds(&self) -> Option<u64>
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fn nseconds(&self) -> Option<u64>
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fn nanoseconds(&self) -> Option<u64>
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fn from_seconds(seconds: u64) -> ClockTime
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fn from_mseconds(mseconds: u64) -> ClockTime
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fn from_useconds(useconds: u64) -> ClockTime
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fn from_nseconds(nseconds: u64) -> ClockTime
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fn none() -> ClockTime
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Methods from Deref<Target = Option<u64>>
fn is_some(&self) -> bool
1.0.0[src]
Returns true
if the option is a Some
value.
Examples
let x: Option<u32> = Some(2); assert_eq!(x.is_some(), true); let x: Option<u32> = None; assert_eq!(x.is_some(), false);
fn is_none(&self) -> bool
1.0.0[src]
Returns true
if the option is a None
value.
Examples
let x: Option<u32> = Some(2); assert_eq!(x.is_none(), false); let x: Option<u32> = None; assert_eq!(x.is_none(), true);
fn as_ref(&self) -> Option<&T>
1.0.0[src]
Converts from Option<T>
to Option<&T>
.
Examples
Convert an Option<
String
>
into an Option<
usize
>
, preserving the original.
The map
method takes the self
argument by value, consuming the original,
so this technique uses as_ref
to first take an Option
to a reference
to the value inside the original.
let num_as_str: Option<String> = Some("10".to_string()); // First, cast `Option<String>` to `Option<&String>` with `as_ref`, // then consume *that* with `map`, leaving `num_as_str` on the stack. let num_as_int: Option<usize> = num_as_str.as_ref().map(|n| n.len()); println!("still can print num_as_str: {:?}", num_as_str);
fn as_mut(&mut self) -> Option<&mut T>
1.0.0[src]
Converts from Option<T>
to Option<&mut T>
.
Examples
let mut x = Some(2); match x.as_mut() { Some(v) => *v = 42, None => {}, } assert_eq!(x, Some(42));
fn expect(self, msg: &str) -> T
1.0.0[src]
Unwraps an option, yielding the content of a Some
.
Panics
Panics if the value is a None
with a custom panic message provided by
msg
.
Examples
let x = Some("value"); assert_eq!(x.expect("the world is ending"), "value");
let x: Option<&str> = None; x.expect("the world is ending"); // panics with `the world is ending`
fn unwrap(self) -> T
1.0.0[src]
Moves the value v
out of the Option<T>
if it is Some(v)
.
In general, because this function may panic, its use is discouraged.
Instead, prefer to use pattern matching and handle the None
case explicitly.
Panics
Panics if the self value equals None
.
Examples
let x = Some("air"); assert_eq!(x.unwrap(), "air");
let x: Option<&str> = None; assert_eq!(x.unwrap(), "air"); // fails
fn unwrap_or(self, def: T) -> T
1.0.0[src]
Returns the contained value or a default.
Examples
assert_eq!(Some("car").unwrap_or("bike"), "car"); assert_eq!(None.unwrap_or("bike"), "bike");
fn unwrap_or_else<F>(self, f: F) -> T where
F: FnOnce() -> T,
1.0.0[src]
F: FnOnce() -> T,
Returns the contained value or computes it from a closure.
Examples
let k = 10; assert_eq!(Some(4).unwrap_or_else(|| 2 * k), 4); assert_eq!(None.unwrap_or_else(|| 2 * k), 20);
fn map<U, F>(self, f: F) -> Option<U> where
F: FnOnce(T) -> U,
1.0.0[src]
F: FnOnce(T) -> U,
Maps an Option<T>
to Option<U>
by applying a function to a contained value.
Examples
Convert an Option<
String
>
into an Option<
usize
>
, consuming the original:
let maybe_some_string = Some(String::from("Hello, World!")); // `Option::map` takes self *by value*, consuming `maybe_some_string` let maybe_some_len = maybe_some_string.map(|s| s.len()); assert_eq!(maybe_some_len, Some(13));
fn map_or<U, F>(self, default: U, f: F) -> U where
F: FnOnce(T) -> U,
1.0.0[src]
F: FnOnce(T) -> U,
Applies a function to the contained value (if any),
or returns a default
(if not).
Examples
let x = Some("foo"); assert_eq!(x.map_or(42, |v| v.len()), 3); let x: Option<&str> = None; assert_eq!(x.map_or(42, |v| v.len()), 42);
fn map_or_else<U, D, F>(self, default: D, f: F) -> U where
D: FnOnce() -> U,
F: FnOnce(T) -> U,
1.0.0[src]
D: FnOnce() -> U,
F: FnOnce(T) -> U,
Applies a function to the contained value (if any),
or computes a default
(if not).
Examples
let k = 21; let x = Some("foo"); assert_eq!(x.map_or_else(|| 2 * k, |v| v.len()), 3); let x: Option<&str> = None; assert_eq!(x.map_or_else(|| 2 * k, |v| v.len()), 42);
fn ok_or<E>(self, err: E) -> Result<T, E>
1.0.0[src]
Transforms the Option<T>
into a Result<T, E>
, mapping Some(v)
to
Ok(v)
and None
to Err(err)
.
Examples
let x = Some("foo"); assert_eq!(x.ok_or(0), Ok("foo")); let x: Option<&str> = None; assert_eq!(x.ok_or(0), Err(0));
fn ok_or_else<E, F>(self, err: F) -> Result<T, E> where
F: FnOnce() -> E,
1.0.0[src]
F: FnOnce() -> E,
Transforms the Option<T>
into a Result<T, E>
, mapping Some(v)
to
Ok(v)
and None
to Err(err())
.
Examples
let x = Some("foo"); assert_eq!(x.ok_or_else(|| 0), Ok("foo")); let x: Option<&str> = None; assert_eq!(x.ok_or_else(|| 0), Err(0));
fn iter(&self) -> Iter<T>
1.0.0[src]
Returns an iterator over the possibly contained value.
Examples
let x = Some(4); assert_eq!(x.iter().next(), Some(&4)); let x: Option<u32> = None; assert_eq!(x.iter().next(), None);
fn iter_mut(&mut self) -> IterMut<T>
1.0.0[src]
Returns a mutable iterator over the possibly contained value.
Examples
let mut x = Some(4); match x.iter_mut().next() { Some(v) => *v = 42, None => {}, } assert_eq!(x, Some(42)); let mut x: Option<u32> = None; assert_eq!(x.iter_mut().next(), None);
fn and<U>(self, optb: Option<U>) -> Option<U>
1.0.0[src]
Returns None
if the option is None
, otherwise returns optb
.
Examples
let x = Some(2); let y: Option<&str> = None; assert_eq!(x.and(y), None); let x: Option<u32> = None; let y = Some("foo"); assert_eq!(x.and(y), None); let x = Some(2); let y = Some("foo"); assert_eq!(x.and(y), Some("foo")); let x: Option<u32> = None; let y: Option<&str> = None; assert_eq!(x.and(y), None);
fn and_then<U, F>(self, f: F) -> Option<U> where
F: FnOnce(T) -> Option<U>,
1.0.0[src]
F: FnOnce(T) -> Option<U>,
Returns None
if the option is None
, otherwise calls f
with the
wrapped value and returns the result.
Some languages call this operation flatmap.
Examples
fn sq(x: u32) -> Option<u32> { Some(x * x) } fn nope(_: u32) -> Option<u32> { None } assert_eq!(Some(2).and_then(sq).and_then(sq), Some(16)); assert_eq!(Some(2).and_then(sq).and_then(nope), None); assert_eq!(Some(2).and_then(nope).and_then(sq), None); assert_eq!(None.and_then(sq).and_then(sq), None);
fn or(self, optb: Option<T>) -> Option<T>
1.0.0[src]
Returns the option if it contains a value, otherwise returns optb
.
Examples
let x = Some(2); let y = None; assert_eq!(x.or(y), Some(2)); let x = None; let y = Some(100); assert_eq!(x.or(y), Some(100)); let x = Some(2); let y = Some(100); assert_eq!(x.or(y), Some(2)); let x: Option<u32> = None; let y = None; assert_eq!(x.or(y), None);
fn or_else<F>(self, f: F) -> Option<T> where
F: FnOnce() -> Option<T>,
1.0.0[src]
F: FnOnce() -> Option<T>,
Returns the option if it contains a value, otherwise calls f
and
returns the result.
Examples
fn nobody() -> Option<&'static str> { None } fn vikings() -> Option<&'static str> { Some("vikings") } assert_eq!(Some("barbarians").or_else(vikings), Some("barbarians")); assert_eq!(None.or_else(vikings), Some("vikings")); assert_eq!(None.or_else(nobody), None);
fn get_or_insert(&mut self, v: T) -> &mut T
1.20.0[src]
Inserts v
into the option if it is None
, then
returns a mutable reference to the contained value.
Examples
let mut x = None; { let y: &mut u32 = x.get_or_insert(5); assert_eq!(y, &5); *y = 7; } assert_eq!(x, Some(7));
fn get_or_insert_with<F>(&mut self, f: F) -> &mut T where
F: FnOnce() -> T,
1.20.0[src]
F: FnOnce() -> T,
Inserts a value computed from f
into the option if it is None
, then
returns a mutable reference to the contained value.
Examples
let mut x = None; { let y: &mut u32 = x.get_or_insert_with(|| 5); assert_eq!(y, &5); *y = 7; } assert_eq!(x, Some(7));
fn take(&mut self) -> Option<T>
1.0.0[src]
fn cloned(self) -> Option<T>
1.0.0[src]
Maps an Option<&T>
to an Option<T>
by cloning the contents of the
option.
Examples
let x = 12; let opt_x = Some(&x); assert_eq!(opt_x, Some(&12)); let cloned = opt_x.cloned(); assert_eq!(cloned, Some(12));
fn cloned(self) -> Option<T>
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option_ref_mut_cloned
)Maps an Option<&mut T>
to an Option<T>
by cloning the contents of the
option.
Examples
#![feature(option_ref_mut_cloned)] let mut x = 12; let opt_x = Some(&mut x); assert_eq!(opt_x, Some(&mut 12)); let cloned = opt_x.cloned(); assert_eq!(cloned, Some(12));
fn unwrap_or_default(self) -> T
1.0.0[src]
Returns the contained value or a default
Consumes the self
argument then, if Some
, returns the contained
value, otherwise if None
, returns the default value for that
type.
Examples
Convert a string to an integer, turning poorly-formed strings
into 0 (the default value for integers). parse
converts
a string to any other type that implements FromStr
, returning
None
on error.
let good_year_from_input = "1909"; let bad_year_from_input = "190blarg"; let good_year = good_year_from_input.parse().ok().unwrap_or_default(); let bad_year = bad_year_from_input.parse().ok().unwrap_or_default(); assert_eq!(1909, good_year); assert_eq!(0, bad_year);
Trait Implementations
impl PartialEq for ClockTime
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fn eq(&self, __arg_0: &ClockTime) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &ClockTime) -> bool
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This method tests for !=
.
impl Eq for ClockTime
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impl PartialOrd for ClockTime
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fn partial_cmp(&self, __arg_0: &ClockTime) -> Option<Ordering>
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This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &ClockTime) -> bool
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This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &ClockTime) -> bool
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This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &ClockTime) -> bool
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This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &ClockTime) -> bool
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This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl Ord for ClockTime
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fn cmp(&self, __arg_0: &ClockTime) -> Ordering
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This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.22.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.22.0[src]
Compares and returns the minimum of two values. Read more
impl Hash for ClockTime
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fn hash<__H: Hasher>(&self, __arg_0: &mut __H)
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Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Clone for ClockTime
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fn clone(&self) -> ClockTime
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl Copy for ClockTime
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impl Debug for ClockTime
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impl Default for ClockTime
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impl Display for ClockTime
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fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
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Formats the value using the given formatter. Read more
impl FormattedValue for ClockTime
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fn get_default_format() -> Format
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fn try_from(v: GenericFormattedValue) -> Option<Self>
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fn get_format(&self) -> Format
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unsafe fn from_raw(format: Format, value: i64) -> Self
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unsafe fn to_raw_value(&self) -> i64
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impl SpecificFormattedValue for ClockTime
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impl From<u64> for ClockTime
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impl From<Option<u64>> for ClockTime
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impl Into<Option<u64>> for ClockTime
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impl Deref for ClockTime
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type Target = Option<u64>
The resulting type after dereferencing.
fn deref(&self) -> &Option<u64>
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Dereferences the value.
impl DerefMut for ClockTime
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impl AsRef<Option<u64>> for ClockTime
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impl AsMut<Option<u64>> for ClockTime
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impl Add<ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the +
operator.
fn add(self, other: ClockTime) -> ClockTime
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Performs the +
operation.
impl<'a> Add<&'a ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the +
operator.
fn add(self, other: &'a ClockTime) -> ClockTime
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Performs the +
operation.
impl AddAssign<ClockTime> for ClockTime
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fn add_assign(&mut self, other: ClockTime)
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Performs the +=
operation.
impl<'a> AddAssign<&'a ClockTime> for ClockTime
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fn add_assign(&mut self, other: &'a ClockTime)
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Performs the +=
operation.
impl Sub<ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the -
operator.
fn sub(self, other: ClockTime) -> ClockTime
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Performs the -
operation.
impl<'a> Sub<&'a ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the -
operator.
fn sub(self, other: &'a ClockTime) -> ClockTime
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Performs the -
operation.
impl SubAssign<ClockTime> for ClockTime
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fn sub_assign(&mut self, other: ClockTime)
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Performs the -=
operation.
impl<'a> SubAssign<&'a ClockTime> for ClockTime
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fn sub_assign(&mut self, other: &'a ClockTime)
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Performs the -=
operation.
impl Mul<ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the *
operator.
fn mul(self, other: ClockTime) -> ClockTime
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Performs the *
operation.
impl<'a> Mul<&'a ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the *
operator.
fn mul(self, other: &'a ClockTime) -> ClockTime
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Performs the *
operation.
impl MulAssign<ClockTime> for ClockTime
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fn mul_assign(&mut self, other: ClockTime)
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Performs the *=
operation.
impl<'a> MulAssign<&'a ClockTime> for ClockTime
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fn mul_assign(&mut self, other: &'a ClockTime)
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Performs the *=
operation.
impl Div<ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the /
operator.
fn div(self, other: ClockTime) -> ClockTime
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Performs the /
operation.
impl<'a> Div<&'a ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the /
operator.
fn div(self, other: &'a ClockTime) -> ClockTime
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Performs the /
operation.
impl DivAssign<ClockTime> for ClockTime
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fn div_assign(&mut self, other: ClockTime)
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Performs the /=
operation.
impl<'a> DivAssign<&'a ClockTime> for ClockTime
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fn div_assign(&mut self, other: &'a ClockTime)
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Performs the /=
operation.
impl Rem<ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the %
operator.
fn rem(self, other: ClockTime) -> ClockTime
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Performs the %
operation.
impl<'a> Rem<&'a ClockTime> for ClockTime
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type Output = ClockTime
The resulting type after applying the %
operator.
fn rem(self, other: &'a ClockTime) -> ClockTime
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Performs the %
operation.
impl RemAssign<ClockTime> for ClockTime
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fn rem_assign(&mut self, other: ClockTime)
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Performs the %=
operation.
impl<'a> RemAssign<&'a ClockTime> for ClockTime
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fn rem_assign(&mut self, other: &'a ClockTime)
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Performs the %=
operation.
impl Mul<u64> for ClockTime
[src]
type Output = ClockTime
The resulting type after applying the *
operator.
fn mul(self, other: u64) -> ClockTime
[src]
Performs the *
operation.
impl<'a> Mul<&'a u64> for ClockTime
[src]
type Output = ClockTime
The resulting type after applying the *
operator.
fn mul(self, other: &'a u64) -> ClockTime
[src]
Performs the *
operation.
impl MulAssign<u64> for ClockTime
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fn mul_assign(&mut self, other: u64)
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Performs the *=
operation.
impl<'a> MulAssign<&'a u64> for ClockTime
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fn mul_assign(&mut self, other: &'a u64)
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Performs the *=
operation.
impl Div<u64> for ClockTime
[src]
type Output = ClockTime
The resulting type after applying the /
operator.
fn div(self, other: u64) -> ClockTime
[src]
Performs the /
operation.
impl<'a> Div<&'a u64> for ClockTime
[src]
type Output = ClockTime
The resulting type after applying the /
operator.
fn div(self, other: &'a u64) -> ClockTime
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Performs the /
operation.
impl DivAssign<u64> for ClockTime
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fn div_assign(&mut self, other: u64)
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Performs the /=
operation.
impl<'a> DivAssign<&'a u64> for ClockTime
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fn div_assign(&mut self, other: &'a u64)
[src]
Performs the /=
operation.
impl Rem<u64> for ClockTime
[src]
type Output = ClockTime
The resulting type after applying the %
operator.
fn rem(self, other: u64) -> ClockTime
[src]
Performs the %
operation.
impl<'a> Rem<&'a u64> for ClockTime
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type Output = ClockTime
The resulting type after applying the %
operator.
fn rem(self, other: &'a u64) -> ClockTime
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Performs the %
operation.
impl RemAssign<u64> for ClockTime
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fn rem_assign(&mut self, other: u64)
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Performs the %=
operation.
impl<'a> RemAssign<&'a u64> for ClockTime
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fn rem_assign(&mut self, other: &'a u64)
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Performs the %=
operation.
impl MulDiv<ClockTime> for ClockTime
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type Output = ClockTime
fn mul_div_floor(self, num: ClockTime, denom: ClockTime) -> Option<Self::Output>
[src]
Calculates floor(val * num / denom)
, i.e. the next integer to the result of the division with the smaller absolute value. Read more
fn mul_div_round(self, num: ClockTime, denom: ClockTime) -> Option<Self::Output>
[src]
Calculates round(val * num / denom)
, i.e. the closest integer to the result of the division. If both surrounding integers are the same distance, the one with the bigger absolute value is returned. Read more
fn mul_div_ceil(self, num: ClockTime, denom: ClockTime) -> Option<Self::Output>
[src]
Calculates ceil(val * num / denom)
, i.e. the next integer to the result of the division with the bigger absolute value. Read more
impl<'a> MulDiv<&'a ClockTime> for ClockTime
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type Output = ClockTime
fn mul_div_floor(
self,
num: &ClockTime,
denom: &ClockTime
) -> Option<Self::Output>
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self,
num: &ClockTime,
denom: &ClockTime
) -> Option<Self::Output>
Calculates floor(val * num / denom)
, i.e. the next integer to the result of the division with the smaller absolute value. Read more
fn mul_div_round(
self,
num: &ClockTime,
denom: &ClockTime
) -> Option<Self::Output>
[src]
self,
num: &ClockTime,
denom: &ClockTime
) -> Option<Self::Output>
Calculates round(val * num / denom)
, i.e. the closest integer to the result of the division. If both surrounding integers are the same distance, the one with the bigger absolute value is returned. Read more
fn mul_div_ceil(
self,
num: &ClockTime,
denom: &ClockTime
) -> Option<Self::Output>
[src]
self,
num: &ClockTime,
denom: &ClockTime
) -> Option<Self::Output>
Calculates ceil(val * num / denom)
, i.e. the next integer to the result of the division with the bigger absolute value. Read more
impl<'a> MulDiv<u64> for ClockTime
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type Output = ClockTime
fn mul_div_floor(self, num: u64, denom: u64) -> Option<Self::Output>
[src]
Calculates floor(val * num / denom)
, i.e. the next integer to the result of the division with the smaller absolute value. Read more
fn mul_div_round(self, num: u64, denom: u64) -> Option<Self::Output>
[src]
Calculates round(val * num / denom)
, i.e. the closest integer to the result of the division. If both surrounding integers are the same distance, the one with the bigger absolute value is returned. Read more
fn mul_div_ceil(self, num: u64, denom: u64) -> Option<Self::Output>
[src]
Calculates ceil(val * num / denom)
, i.e. the next integer to the result of the division with the bigger absolute value. Read more
impl<'a> MulDiv<&'a u64> for ClockTime
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type Output = ClockTime
fn mul_div_floor(self, num: &u64, denom: &u64) -> Option<Self::Output>
[src]
Calculates floor(val * num / denom)
, i.e. the next integer to the result of the division with the smaller absolute value. Read more
fn mul_div_round(self, num: &u64, denom: &u64) -> Option<Self::Output>
[src]
Calculates round(val * num / denom)
, i.e. the closest integer to the result of the division. If both surrounding integers are the same distance, the one with the bigger absolute value is returned. Read more
fn mul_div_ceil(self, num: &u64, denom: &u64) -> Option<Self::Output>
[src]
Calculates ceil(val * num / denom)
, i.e. the next integer to the result of the division with the bigger absolute value. Read more