Test two objects for inequality.
Test two objects for inequality.
true
if !(this == that), false otherwise.
Equivalent to x.hashCode
except for boxed numeric types and null
.
Equivalent to x.hashCode
except for boxed numeric types and null
.
For numerics, it returns a hash value which is consistent
with value equality: if two value type instances compare
as true, then ## will produce the same hash value for each
of them.
For null
returns a hashcode where null.hashCode
throws a
NullPointerException
.
a hash value consistent with ==
The expression x == that
is equivalent to if (x eq null) that eq null else x.equals(that)
.
The expression x == that
is equivalent to if (x eq null) that eq null else x.equals(that)
.
true
if the receiver object is equivalent to the argument; false
otherwise.
The natural ordering of durations matches the natural ordering for Double, including non-finite values.
Infinite duration: greater than any other (apart from Undefined) and not equal to any other but itself.
Infinite duration: greater than any other (apart from Undefined) and not equal to any other but itself. This value closely corresponds to Double.PositiveInfinity, matching its semantics in arithmetic operations.
Infinite duration: less than any other and not equal to any other but itself.
Infinite duration: less than any other and not equal to any other but itself. This value closely corresponds to Double.NegativeInfinity, matching its semantics in arithmetic operations.
The Undefined value corresponds closely to Double.NaN:
The Undefined value corresponds closely to Double.NaN:
equals()
)compare
returns 0)The particular comparison semantics mirror those of Double.NaN.
Use eq
when checking an input of a method against this value.
Preconstructed value of 0.days
.
Parse String into Duration.
Parse String into Duration. Format is "<length><unit>"
, where
whitespace is allowed before, between and after the parts. Infinities are
designated by "Inf"
, "PlusInf"
, "+Inf"
and "-Inf"
or "MinusInf"
.
NumberFormatException
if format is not parseable
Construct a finite duration from the given length and time unit, where the latter is looked up in a list of string representation.
Construct a finite duration from the given length and time unit, where the latter is looked up in a list of string representation. Valid choices are:
d, day, h, hour, min, minute, s, sec, second, ms, milli, millisecond, µs, micro, microsecond, ns, nano, nanosecond
and their pluralized forms (for every but the first mentioned form of each unit, i.e. no "ds", but "days").
Construct a finite duration from the given length and time unit.
Construct a finite duration from the given length and time unit. The unit given is retained throughout calculations as long as possible, so that it can be retrieved later.
Construct a Duration from the given length and unit.
Construct a Duration from the given length and unit. Observe that nanosecond precision may be lost if
Infinite inputs (and NaN) are converted into Duration.Inf, Duration.MinusInf and Duration.Undefined, respectively.
IllegalArgumentException
if the length was finite but the resulting duration cannot be expressed as a FiniteDuration
Cast the receiver object to be of type T0
.
Cast the receiver object to be of type T0
.
Note that the success of a cast at runtime is modulo Scala's erasure semantics.
Therefore the expression 1.asInstanceOf[String]
will throw a ClassCastException
at
runtime, while the expression List(1).asInstanceOf[List[String]]
will not.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the requested type.
the receiver object.
ClassCastException
if the receiver object is not an instance of the erasure of type T0
.
Create a copy of the receiver object.
Parse String into Duration.
Parse String into Duration. Format is "<length><unit>"
, where
whitespace is allowed before, between and after the parts. Infinities are
designated by "Inf"
, "PlusInf"
, "+Inf"
and "-Inf"
or "MinusInf"
.
NumberFormatException
if format is not parseable
Construct a finite duration from the given length and time unit, where the latter is looked up in a list of string representation.
Construct a finite duration from the given length and time unit, where the latter is looked up in a list of string representation. Valid choices are:
d, day, h, hour, min, minute, s, sec, second, ms, milli, millisecond, µs, micro, microsecond, ns, nano, nanosecond
and their pluralized forms (for every but the first mentioned form of each unit, i.e. no "ds", but "days").
Construct a Duration from the given length and unit.
Construct a Duration from the given length and unit. Observe that nanosecond precision may be lost if
Infinite inputs (and NaN) are converted into Duration.Inf, Duration.MinusInf and Duration.Undefined, respectively.
IllegalArgumentException
if the length was finite but the resulting duration cannot be expressed as a FiniteDuration
Construct a finite duration from the given length and time unit.
Construct a finite duration from the given length and time unit. The unit given is retained throughout calculations as long as possible, so that it can be retrieved later.
Tests whether the argument (that
) is a reference to the receiver object (this
).
Tests whether the argument (that
) is a reference to the receiver object (this
).
The eq
method implements an equivalence relation on
non-null instances of AnyRef
, and has three additional properties:
x
and y
of type AnyRef
, multiple invocations of
x.eq(y)
consistently returns true
or consistently returns false
.x
of type AnyRef
, x.eq(null)
and null.eq(x)
returns false
.null.eq(null)
returns true
. When overriding the equals
or hashCode
methods, it is important to ensure that their behavior is
consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2
), they
should be equal to each other (o1 == o2
) and they should hash to the same value (o1.hashCode == o2.hashCode
).
true
if the argument is a reference to the receiver object; false
otherwise.
The equality method for reference types.
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize
method is invoked, as
well as the interaction between finalize
and non-local returns
and exceptions, are all platform dependent.
Construct a finite duration from the given number of nanoseconds.
Construct a finite duration from the given number of nanoseconds. The result will have the coarsest possible time unit which can exactly express this duration.
IllegalArgumentException
for Long.MinValue
since that would lead to inconsistent behavior afterwards (cannot be negated)
Construct a possibly infinite or undefined Duration from the given number of nanoseconds.
Construct a possibly infinite or undefined Duration from the given number of nanoseconds.
Double.PositiveInfinity
is mapped to Duration.InfDouble.NegativeInfinity
is mapped to Duration.MinusInfDouble.NaN
is mapped to Duration.Undefined-0d
is mapped to Duration.Zero (exactly like 0d
)The semantics of the resulting Duration objects matches the semantics of their Double counterparts with respect to arithmetic operations.
IllegalArgumentException
if the length was finite but the resulting duration cannot be expressed as a FiniteDuration
A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
not specified by SLS as a member of AnyRef
The hashCode method for reference types.
Test whether the dynamic type of the receiver object is T0
.
Test whether the dynamic type of the receiver object is T0
.
Note that the result of the test is modulo Scala's erasure semantics.
Therefore the expression 1.isInstanceOf[String]
will return false
, while the
expression List(1).isInstanceOf[List[String]]
will return true
.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the specified type.
true
if the receiver object is an instance of erasure of type T0
; false
otherwise.
Equivalent to !(this eq that)
.
Equivalent to !(this eq that)
.
true
if the argument is not a reference to the receiver object; false
otherwise.
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
a String representation of the object.
Extract length and time unit out of a duration, if it is finite.
Extract length and time unit out of a string, where the format must match the description for apply(String).
Extract length and time unit out of a string, where the format must match the description for apply(String). The extractor will not match for malformed strings or non-finite durations.