object BigDecimal extends java.io.Serializable
- Source
- BigDecimal.scala
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- BigDecimal
- Serializable
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Value Members
- final def !=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
- returns
true
if !(this == that), false otherwise.
- Definition Classes
- AnyRef → Any
- final def ##(): Int
Equivalent to
x.hashCode
except for boxed numeric types andnull
.Equivalent to
x.hashCode
except for boxed numeric types andnull
. 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. Fornull
returns a hashcode wherenull.hashCode
throws aNullPointerException
.- returns
a hash value consistent with ==
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.- returns
true
if the receiver object is equivalent to the argument;false
otherwise.
- Definition Classes
- AnyRef → Any
- def apply(bd: java.math.BigDecimal): BigDecimal
Constructs a
BigDecimal
from ajava.math.BigDecimal
. - def apply(unscaledVal: BigInt, scale: Int, mc: MathContext): BigDecimal
Constructs a
BigDecimal
whose unscaled value is equal to that of the specifiedBigInt
value.Constructs a
BigDecimal
whose unscaled value is equal to that of the specifiedBigInt
value.- unscaledVal
the specified
BigInt
value- scale
the scale
- mc
the precision and rounding mode for creation of this value and future operations on it
- returns
the constructed
BigDecimal
- def apply(unscaledVal: BigInt, scale: Int): BigDecimal
Constructs a
BigDecimal
whose unscaled value is equal to that of the specifiedBigInt
value.Constructs a
BigDecimal
whose unscaled value is equal to that of the specifiedBigInt
value.- unscaledVal
the specified
BigInt
value- scale
the scale
- returns
the constructed
BigDecimal
- def apply(x: BigInt, mc: MathContext): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specifiedBigInt
value, rounding if necessary.Constructs a
BigDecimal
whose value is equal to that of the specifiedBigInt
value, rounding if necessary.- x
the specified
BigInt
value- mc
the precision and rounding mode for creation of this value and future operations on it
- returns
the constructed
BigDecimal
- def apply(x: BigInt): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specifiedBigInt
value.Constructs a
BigDecimal
whose value is equal to that of the specifiedBigInt
value.- x
the specified
BigInt
value- returns
the constructed
BigDecimal
- def apply(x: String, mc: MathContext): BigDecimal
Translates the decimal String representation of a
BigDecimal
into aBigDecimal
, rounding if necessary. - def apply(x: String): BigDecimal
Translates the decimal String representation of a
BigDecimal
into aBigDecimal
. - def apply(x: Array[Char], mc: MathContext): BigDecimal
Translates a character array representation of a
BigDecimal
into aBigDecimal
, rounding if necessary. - def apply(x: Array[Char]): BigDecimal
Translates a character array representation of a
BigDecimal
into aBigDecimal
. - def apply(d: Double, mc: MathContext): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specified double value, but rounded if necessary.Constructs a
BigDecimal
whose value is equal to that of the specified double value, but rounded if necessary. Equivalent toBigDecimal.decimal
.- d
the specified
Double
value- mc
the precision and rounding mode for creation of this value and future operations on it
- returns
the constructed
BigDecimal
- def apply(d: Double): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specified double value.Constructs a
BigDecimal
whose value is equal to that of the specified double value. Equivalent toBigDecimal.decimal
.- d
the specified
Double
value- returns
the constructed
BigDecimal
- def apply(unscaledVal: Long, scale: Int, mc: MathContext): BigDecimal
Constructs a
BigDecimal
whose unscaled value is equal to that of the specified long value, but rounded if necessary.Constructs a
BigDecimal
whose unscaled value is equal to that of the specified long value, but rounded if necessary.- unscaledVal
the value
- scale
the scale
- mc
the precision and rounding mode for creation of this value and future operations on it
- returns
the constructed
BigDecimal
- def apply(unscaledVal: Long, scale: Int): BigDecimal
Constructs a
BigDecimal
whose unscaled value is equal to that of the specified long value.Constructs a
BigDecimal
whose unscaled value is equal to that of the specified long value.- unscaledVal
the value
- scale
the scale
- returns
the constructed
BigDecimal
- def apply(l: Long, mc: MathContext): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specified long value, but rounded if necessary.Constructs a
BigDecimal
whose value is equal to that of the specified long value, but rounded if necessary.- l
the specified long value
- mc
the precision and rounding mode for creation of this value and future operations on it
- returns
the constructed
BigDecimal
- def apply(l: Long): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specified long value.Constructs a
BigDecimal
whose value is equal to that of the specified long value.- l
the specified long value
- returns
the constructed
BigDecimal
- def apply(i: Int, mc: MathContext): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specifiedInteger
value, rounding if necessary.Constructs a
BigDecimal
whose value is equal to that of the specifiedInteger
value, rounding if necessary.- i
the specified integer value
- mc
the precision and rounding mode for creation of this value and future operations on it
- returns
the constructed
BigDecimal
- def apply(i: Int): BigDecimal
Constructs a
BigDecimal
whose value is equal to that of the specifiedInteger
value.Constructs a
BigDecimal
whose value is equal to that of the specifiedInteger
value.- i
the specified integer value
- returns
the constructed
BigDecimal
- final def asInstanceOf[T0]: T0
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 aClassCastException
at runtime, while the expressionList(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.- returns
the receiver object.
- Definition Classes
- Any
- Exceptions thrown
ClassCastException
if the receiver object is not an instance of the erasure of typeT0
.
- def binary(d: Double): BigDecimal
Constructs a
BigDecimal
by expanding the binary fraction contained byDouble
valued
into a decimal representation.Constructs a
BigDecimal
by expanding the binary fraction contained byDouble
valued
into a decimal representation. Note: this also works correctly on convertedFloat
s. - def binary(d: Double, mc: MathContext): BigDecimal
Constructs a
BigDecimal
by expanding the binary fraction contained byDouble
valued
into a decimal representation, rounding if necessary.Constructs a
BigDecimal
by expanding the binary fraction contained byDouble
valued
into a decimal representation, rounding if necessary. When aFloat
is converted to aDouble
, the binary fraction is preserved, so this method also works for convertedFloat
s. - def clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the
clone
method is platform dependent.- returns
a copy of the receiver object.
- def decimal(bd: java.math.BigDecimal, mc: MathContext): BigDecimal
Constructs a
BigDecimal
using ajava.math.BigDecimal
, rounding if necessary. - def decimal(l: Long): BigDecimal
Constructs a
BigDecimal
from aLong
.Constructs a
BigDecimal
from aLong
. This is identical toBigDecimal(l)
. - def decimal(l: Long, mc: MathContext): BigDecimal
Constructs a
BigDecimal
from aLong
, rounding if necessary.Constructs a
BigDecimal
from aLong
, rounding if necessary. This is identical toBigDecimal(l, mc)
. - def decimal(f: Float): BigDecimal
Constructs a
BigDecimal
using the decimal text representation ofFloat
valuef
.Constructs a
BigDecimal
using the decimal text representation ofFloat
valuef
. Note thatBigDecimal.decimal(0.1f) != 0.1f
since equality agrees with theDouble
representation, and0.1 != 0.1f
. - def decimal(f: Float, mc: MathContext): BigDecimal
Constructs a
BigDecimal
using the decimal text representation ofFloat
valuef
, rounding if necessary.Constructs a
BigDecimal
using the decimal text representation ofFloat
valuef
, rounding if necessary. Note thatBigDecimal.decimal(0.1f) != 0.1f
since equality agrees with theDouble
representation, and0.1 != 0.1f
. - def decimal(d: Double): BigDecimal
Constructs a
BigDecimal
using the decimal text representation ofDouble
valued
. - def decimal(d: Double, mc: MathContext): BigDecimal
Constructs a
BigDecimal
using the decimal text representation ofDouble
valued
, rounding if necessary. - val defaultMathContext: MathContext
- implicit def double2bigDecimal(d: Double): BigDecimal
Implicit conversion from
Double
toBigDecimal
. - final def eq(arg0: AnyRef): Boolean
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 ofAnyRef
, and has three additional properties:- It is consistent: for any non-null instances
x
andy
of typeAnyRef
, multiple invocations ofx.eq(y)
consistently returnstrue
or consistently returnsfalse
. - For any non-null instance
x
of typeAnyRef
,x.eq(null)
andnull.eq(x)
returnsfalse
. null.eq(null)
returnstrue
.
When overriding the
equals
orhashCode
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
).- returns
true
if the argument is a reference to the receiver object;false
otherwise.
- Definition Classes
- AnyRef
- It is consistent: for any non-null instances
- def equals(arg0: AnyRef): Boolean
The equality method for reference types.
- def exact(cs: Array[Char]): BigDecimal
Constructs a
BigDecimal
that exactly represents the number specified in base 10 in a character array. - def exact(s: String): BigDecimal
Constructs a
BigDecimal
that exactly represents the number specified in aString
. - def exact(l: Long): BigDecimal
Constructs a
BigDecimal
that exactly represents aLong
.Constructs a
BigDecimal
that exactly represents aLong
. Note that all creation methods forBigDecimal
that do not take aMathContext
represent aLong
; this is equivalent toapply
,valueOf
, etc.. - def exact(bi: BigInt): BigDecimal
Constructs a
BigDecimal
that exactly represents aBigInt
. - def exact(d: Double): BigDecimal
Constructs a
BigDecimal
by fully expanding the binary fraction contained byDouble
valued
, adjusting the precision as necessary.Constructs a
BigDecimal
by fully expanding the binary fraction contained byDouble
valued
, adjusting the precision as necessary. Note: this works correctly on convertedFloat
s also. - def exact(repr: java.math.BigDecimal): BigDecimal
Constructs a
BigDecimal
from ajava.math.BigDecimal
.Constructs a
BigDecimal
from ajava.math.BigDecimal
. The precision is the default forBigDecimal
or enough to represent thejava.math.BigDecimal
exactly, whichever is greater. - def finalize(): Unit
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 betweenfinalize
and non-local returns and exceptions, are all platform dependent.- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable])
- Note
not specified by SLS as a member of AnyRef
- final def getClass(): Class[_ <: AnyRef]
Returns the runtime class representation of the object.
- def hashCode(): Int
The hashCode method for reference types.
- implicit def int2bigDecimal(i: Int): BigDecimal
Implicit conversion from
Int
toBigDecimal
. - final def isInstanceOf[T0]: Boolean
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 returnfalse
, while the expressionList(1).isInstanceOf[List[String]]
will returntrue
. 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.- returns
true
if the receiver object is an instance of erasure of typeT0
;false
otherwise.
- Definition Classes
- Any
- implicit def javaBigDecimal2bigDecimal(x: java.math.BigDecimal): BigDecimal
Implicit conversion from
java.math.BigDecimal
toscala.BigDecimal
. - implicit def long2bigDecimal(l: Long): BigDecimal
Implicit conversion from
Long
toBigDecimal
. - final def ne(arg0: AnyRef): Boolean
Equivalent to
!(this eq that)
.Equivalent to
!(this eq that)
.- returns
true
if the argument is not a reference to the receiver object;false
otherwise.
- Definition Classes
- AnyRef
- final def notify(): Unit
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.
- Definition Classes
- AnyRef
- Annotations
- @native()
- Note
not specified by SLS as a member of AnyRef
- final def notifyAll(): Unit
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.
- Definition Classes
- AnyRef
- Annotations
- @native()
- Note
not specified by SLS as a member of AnyRef
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
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.
- returns
a String representation of the object.
- Definition Classes
- AnyRef → Any
- def valueOf(x: Long): BigDecimal
Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor.Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor.- x
the specified
Long
value- returns
the constructed
BigDecimal
- def valueOf(d: Double): BigDecimal
Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor.Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor. Equivalent toBigDecimal.decimal
.- d
the specified double value
- returns
the constructed
BigDecimal
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- object RoundingMode extends Enumeration
This is the documentation for the Scala standard library.
Package structure
The scala package contains core types like
Int
,Float
,Array
orOption
which are accessible in all Scala compilation units without explicit qualification or imports.Notable packages include:
scala.collection
and its sub-packages contain Scala's collections frameworkscala.collection.immutable
- Immutable, sequential data-structures such asVector
,List
,Range
,HashMap
orHashSet
scala.collection.mutable
- Mutable, sequential data-structures such asArrayBuffer
,StringBuilder
,HashMap
orHashSet
scala.collection.concurrent
- Mutable, concurrent data-structures such asTrieMap
scala.concurrent
- Primitives for concurrent programming such asFutures
andPromises
scala.io
- Input and output operationsscala.math
- Basic math functions and additional numeric types likeBigInt
andBigDecimal
scala.sys
- Interaction with other processes and the operating systemscala.util.matching
- Regular expressionsOther packages exist. See the complete list on the right.
Additional parts of the standard library are shipped as separate libraries. These include:
scala.reflect
- Scala's reflection API (scala-reflect.jar)scala.xml
- XML parsing, manipulation, and serialization (scala-xml.jar)scala.collection.parallel
- Parallel collections (scala-parallel-collections.jar)scala.util.parsing
- Parser combinators (scala-parser-combinators.jar)scala.swing
- A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)Automatic imports
Identifiers in the scala package and the
scala.Predef
object are always in scope by default.Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example,
List
is an alias forscala.collection.immutable.List
.Other aliases refer to classes provided by the underlying platform. For example, on the JVM,
String
is an alias forjava.lang.String
.