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 ==
Returns true if this
is less than that
Returns true if this
is less than that
Returns true if this
is less than or equal to that
.
Returns true if this
is less than or equal to that
.
Test two objects for equality.
Test two objects for equality.
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.
Returns true if this
is greater than that
.
Returns true if this
is greater than that
.
Returns true if this
is greater than or equal to that
.
Returns true if this
is greater than or equal to that
.
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.
if the receiver object is not an instance of the erasure of type T0
.
Create a copy of the receiver object.
Result of comparing this
with operand that
.
Result of comparing this
with operand that
.
Implement this method to determine how instances of A will be sorted.
Returns x
where:
x < 0
when this < that
x == 0
when this == that
x > 0
when this > that
Result of comparing this
with operand that
.
Result of comparing this
with operand that
.
Tests whether the argument (arg0
) is a reference to the receiver object (this
).
Tests whether the argument (arg0
) 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.
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.
In order to supply predictable ranges, we require an Integral[T] which provides us with discrete operations on the (otherwise fractional) T.
In order to supply predictable ranges, we require an Integral[T] which provides us with discrete operations on the (otherwise fractional) T. See Numeric.DoubleAsIfIntegral for an example.
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.
Returns true
iff this has a zero fractional part, and is within the
range of Byte MinValue and MaxValue; otherwise returns false
.
Returns true
iff this has a zero fractional part, and is within the
range of Byte MinValue and MaxValue; otherwise returns false
.
Returns true
iff this has a zero fractional part, and is within the
range of Char MinValue and MaxValue; otherwise returns false
.
Returns true
iff this has a zero fractional part, and is within the
range of Char MinValue and MaxValue; otherwise returns false
.
Returns true
iff this has a zero fractional part, and is within the
range of Int MinValue and MaxValue; otherwise returns false
.
Returns true
iff this has a zero fractional part, and is within the
range of Int MinValue and MaxValue; otherwise returns false
.
Returns true
iff this has a zero fractional part, and is within the
range of Short MinValue and MaxValue; otherwise returns false
.
Returns true
iff this has a zero fractional part, and is within the
range of Short MinValue and MaxValue; otherwise returns false
.
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
Returns the value of this as a Byte.
Returns the value of this as a Byte. This may involve rounding or truncation.
Returns the value of this as a Char.
Returns the value of this as a Char. This may involve rounding or truncation.
Converts an angle measured in radians to an approximately equivalent angle measured in degrees.
Converts an angle measured in radians to an approximately equivalent angle measured in degrees.
the measurement of the angle x
in degrees.
Returns the value of this as a Double.
Returns the value of this as a Double. This may involve rounding or truncation.
Returns the value of this as a Float.
Returns the value of this as a Float. This may involve rounding or truncation.
Returns the value of this as an Int.
Returns the value of this as an Int. This may involve rounding or truncation.
Returns the value of this as a Long.
Returns the value of this as a Long. This may involve rounding or truncation.
Converts an angle measured in degrees to an approximately equivalent angle measured in radians.
Converts an angle measured in degrees to an approximately equivalent angle measured in radians.
the measurement of the angle x
in radians.
Returns the value of this as a Short.
Returns the value of this as a Short. This may involve rounding or truncation.
Creates a String representation of this object.
Should only be called after all known non-primitive types have been excluded.
Should only be called after all known non-primitive types have been excluded. This method won't dispatch anywhere else after checking against the primitives to avoid infinite recursion between equals and this on unknown "Number" variants.
Additionally, this should only be called if the numeric type is happy to be converted to Long, Float, and Double. If for instance a BigInt much larger than the Long range is sent here, it will claim equality with whatever Long is left in its lower 64 bits. Or a BigDecimal with more precision than Double can hold: same thing. There's no way given the interface available here to prevent this error.