object BigDecimal extends Serializable
 Source
 BigDecimal.scala
 Since
2.7
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 BigDecimal
 Serializable
 Serializable
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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.

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 nonnull instances ofAnyRef
, and has three additional properties: It is consistent: for any nonnull instances
x
andy
of typeAnyRef
, multiple invocations ofx.eq(y)
consistently returnstrue
or consistently returnsfalse
.  For any nonnull 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 nonnull instances

def
equals(arg0: Any): 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 nonlocal 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[_]
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( ... )

final
def
wait(arg0: Long, arg1: Int): Unit
 Definition Classes
 AnyRef
 Annotations
 @throws( ... )
 final def wait(arg0: Long): Unit
 object RoundingMode extends Enumeration
Deprecated Value Members

def
apply(bd: java.math.BigDecimal, mc: MathContext): BigDecimal
 Annotations
 @deprecated
 Deprecated
(Since version 2.11.0) This method appears to round a java.math.BigDecimal but actually doesn't. Use new BigDecimal(bd, mc) instead for no rounding, or BigDecimal.decimal(bd, mc) for rounding.

def
apply(x: Float, mc: MathContext): BigDecimal
 Annotations
 @deprecated
 Deprecated
(Since version 2.11.0) The default conversion from Float may not do what you want. Use BigDecimal.decimal for a String representation, or explicitly convert the Float with .toDouble.

def
apply(x: Float): BigDecimal
 Annotations
 @deprecated
 Deprecated
(Since version 2.11.0) The default conversion from Float may not do what you want. Use BigDecimal.decimal for a String representation, or explicitly convert the Float with .toDouble.

def
valueOf(f: Float, mc: MathContext): BigDecimal
Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor.Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor. This is unlikely to do what you want; usevalueOf(f.toDouble)
ordecimal(f)
instead. Annotations
 @deprecated
 Deprecated
(Since version 2.11.0) Float arguments to valueOf may not do what you wish. Use decimal or valueOf(f.toDouble).

def
valueOf(f: Float): BigDecimal
Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor.Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor. This is unlikely to do what you want; usevalueOf(f.toDouble)
ordecimal(f)
instead. Annotations
 @deprecated
 Deprecated
(Since version 2.11.0) Float arguments to valueOf may not do what you wish. Use decimal or valueOf(f.toDouble).

def
valueOf(d: Double, mc: MathContext): BigDecimal
Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor, specifying aMathContext
that is used for computations but isn't used for rounding.Constructs a
BigDecimal
using the java BigDecimal static valueOf constructor, specifying aMathContext
that is used for computations but isn't used for rounding. UseBigDecimal.decimal
to useMathContext
for rounding, orBigDecimal(java.math.BigDecimal.valueOf(d), mc)
for no rounding. d
the specified double value
 mc
the
MathContext
used for future computations returns
the constructed
BigDecimal
 Annotations
 @deprecated
 Deprecated
(Since version 2.11.0) MathContext is not applied to Doubles in valueOf. Use BigDecimal.decimal to use rounding, or java.math.BigDecimal.valueOf to avoid it.
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 subpackages contain Scala's collections frameworkscala.collection.immutable
 Immutable, sequential datastructures such asVector
,List
,Range
,HashMap
orHashSet
scala.collection.mutable
 Mutable, sequential datastructures such asArrayBuffer
,StringBuilder
,HashMap
orHashSet
scala.collection.concurrent
 Mutable, concurrent datastructures such asTrieMap
scala.collection.parallel.immutable
 Immutable, parallel datastructures such asParVector
,ParRange
,ParHashMap
orParHashSet
scala.collection.parallel.mutable
 Mutable, parallel datastructures such asParArray
,ParHashMap
,ParTrieMap
orParHashSet
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 (scalareflect.jar)scala.xml
 XML parsing, manipulation, and serialization (scalaxml.jar)scala.swing
 A convenient wrapper around Java's GUI framework called Swing (scalaswing.jar)scala.util.parsing
 Parser combinators (scalaparsercombinators.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
.