trait FractionalProxy[T] extends ScalaNumberProxy[T] with RangedProxy[T]
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 By Inheritance
 FractionalProxy
 RangedProxy
 ScalaNumberProxy
 OrderedProxy
 Ordered
 Comparable
 Typed
 Proxy
 ScalaNumericAnyConversions
 Any
 by orderingToOrdered
 by any2stringadd
 by StringFormat
 by Ensuring
 by ArrowAssoc
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Type Members

type
ResultWithoutStep = Partial[T, NumericRange[T]]
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.
 Definition Classes
 FractionalProxy → RangedProxy
Abstract Value Members

abstract
def
getClass(): Class[_]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
 returns
a class object corresponding to the runtime type of the receiver.
 Definition Classes
 Any

implicit abstract
def
integralNum: Integral[T]
 Attributes
 protected

implicit abstract
def
num: Fractional[T]
 Attributes
 protected
 Definition Classes
 FractionalProxy → ScalaNumberProxy

abstract
def
ord: Ordering[T]
 Attributes
 protected
 Definition Classes
 OrderedProxy
 abstract def self: T
Concrete 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
 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
 Any

def
+(other: String): String
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to any2stringadd[FractionalProxy[T]] performed by method any2stringadd in scala.Predef.
 Definition Classes
 any2stringadd

def
>[B](y: B): (FractionalProxy[T], B)
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to ArrowAssoc[FractionalProxy[T]] performed by method ArrowAssoc in scala.Predef.
 Definition Classes
 ArrowAssoc
 Annotations
 @inline()

def
<(that: T): Boolean
Returns true if
this
is less thanthat
Returns true if
this
is less thanthat
 Definition Classes
 Ordered

def
<=(that: T): Boolean
Returns true if
this
is less than or equal tothat
.Returns true if
this
is less than or equal tothat
. Definition Classes
 Ordered

final
def
==(arg0: Any): Boolean
Test two objects for equality.
Test two objects for equality. 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
 Any

def
>(that: T): Boolean
Returns true if
this
is greater thanthat
.Returns true if
this
is greater thanthat
. Definition Classes
 Ordered

def
>=(that: T): Boolean
Returns true if
this
is greater than or equal tothat
.Returns true if
this
is greater than or equal tothat
. Definition Classes
 Ordered

def
abs: T
Returns the absolute value of
this
.Returns the absolute value of
this
. Definition Classes
 ScalaNumberProxy

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
byteValue(): Byte
 Definition Classes
 ScalaNumberProxy → ScalaNumericAnyConversions

def
compare(y: T): Int
Result of comparing
this
with operandthat
.Result of comparing
this
with operandthat
.Implement this method to determine how instances of A will be sorted.
Returns
x
where:x < 0
whenthis < that
x == 0
whenthis == that
x > 0
whenthis > that
 Definition Classes
 OrderedProxy → Ordered

def
compareTo(that: T): Int
Result of comparing
this
with operandthat
.Result of comparing
this
with operandthat
. Definition Classes
 Ordered → Comparable

def
doubleValue(): Double
 Definition Classes
 ScalaNumberProxy → ScalaNumericAnyConversions

def
ensuring(cond: (FractionalProxy[T]) ⇒ Boolean, msg: ⇒ Any): FractionalProxy[T]
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to Ensuring[FractionalProxy[T]] performed by method Ensuring in scala.Predef.
 Definition Classes
 Ensuring

def
ensuring(cond: (FractionalProxy[T]) ⇒ Boolean): FractionalProxy[T]
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to Ensuring[FractionalProxy[T]] performed by method Ensuring in scala.Predef.
 Definition Classes
 Ensuring

def
ensuring(cond: Boolean, msg: ⇒ Any): FractionalProxy[T]
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to Ensuring[FractionalProxy[T]] performed by method Ensuring in scala.Predef.
 Definition Classes
 Ensuring

def
ensuring(cond: Boolean): FractionalProxy[T]
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to Ensuring[FractionalProxy[T]] performed by method Ensuring in scala.Predef.
 Definition Classes
 Ensuring

def
equals(that: Any): Boolean
Compares the receiver object (
this
) with the argument object (that
) for equivalence.Compares the receiver object (
this
) with the argument object (that
) for equivalence.Any implementation of this method should be an equivalence relation:
 It is reflexive: for any instance
x
of typeAny
,x.equals(x)
should returntrue
.  It is symmetric: for any instances
x
andy
of typeAny
,x.equals(y)
should returntrue
if and only ify.equals(x)
returnstrue
.  It is transitive: for any instances
x
,y
, andz
of typeAny
ifx.equals(y)
returnstrue
andy.equals(z)
returnstrue
, thenx.equals(z)
should returntrue
.
If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is usually necessary to override
hashCode
to ensure that objects which are "equal" (o1.equals(o2)
returnstrue
) hash to the same scala.Int. (o1.hashCode.equals(o2.hashCode)
). that
the object to compare against this object for equality.
 returns
true
if the receiver object is equivalent to the argument;false
otherwise.
 It is reflexive: for any instance

def
floatValue(): Float
 Definition Classes
 ScalaNumberProxy → ScalaNumericAnyConversions

def
formatted(fmtstr: String): String
Returns string formatted according to given
format
string.Returns string formatted according to given
format
string. Format strings are as forString.format
(@see java.lang.String.format). Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to Predef.StringFormat[FractionalProxy[T]] performed by method StringFormat in scala.Predef.
 Definition Classes
 StringFormat
 Annotations
 @inline()

def
hashCode(): Int
Calculate a hash code value for the object.
Calculate a hash code value for the object.
The default hashing algorithm is platform dependent.
Note that it is allowed for two objects to have identical hash codes (
o1.hashCode.equals(o2.hashCode)
) yet not be equal (o1.equals(o2)
returnsfalse
). A degenerate implementation could always return0
. However, it is required that if two objects are equal (o1.equals(o2)
returnstrue
) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)
). Therefore, when overriding this method, be sure to verify that the behavior is consistent with theequals
method. returns
the hash code value for this object.

def
intValue(): Int
 Definition Classes
 ScalaNumberProxy → ScalaNumericAnyConversions

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

def
isValidByte: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Byte MinValue and MaxValue; otherwise returnsfalse
.Returns
true
iff this has a zero fractional part, and is within the range of scala.Byte MinValue and MaxValue; otherwise returnsfalse
. Definition Classes
 ScalaNumericAnyConversions

def
isValidChar: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Char MinValue and MaxValue; otherwise returnsfalse
.Returns
true
iff this has a zero fractional part, and is within the range of scala.Char MinValue and MaxValue; otherwise returnsfalse
. Definition Classes
 ScalaNumericAnyConversions

def
isValidInt: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Int MinValue and MaxValue; otherwise returnsfalse
.Returns
true
iff this has a zero fractional part, and is within the range of scala.Int MinValue and MaxValue; otherwise returnsfalse
. Definition Classes
 ScalaNumericAnyConversions

def
isValidShort: Boolean
Returns
true
iff this has a zero fractional part, and is within the range of scala.Short MinValue and MaxValue; otherwise returnsfalse
.Returns
true
iff this has a zero fractional part, and is within the range of scala.Short MinValue and MaxValue; otherwise returnsfalse
. Definition Classes
 ScalaNumericAnyConversions

def
isWhole(): Boolean
 returns
true
if this number has no decimal component,false
otherwise.
 Definition Classes
 FractionalProxy → ScalaNumericAnyConversions

def
longValue(): Long
 Definition Classes
 ScalaNumberProxy → ScalaNumericAnyConversions

def
max(that: T): T
Returns
this
ifthis > that
orthat
otherwise.Returns
this
ifthis > that
orthat
otherwise. Definition Classes
 ScalaNumberProxy

def
min(that: T): T
Returns
this
ifthis < that
orthat
otherwise.Returns
this
ifthis < that
orthat
otherwise. Definition Classes
 ScalaNumberProxy

def
shortValue(): Short
 Definition Classes
 ScalaNumberProxy → ScalaNumericAnyConversions

def
signum: Int
Returns the signum of
this
.Returns the signum of
this
. Definition Classes
 ScalaNumberProxy

def
toByte: Byte
Returns the value of this as a scala.Byte.
Returns the value of this as a scala.Byte. This may involve rounding or truncation.
 Definition Classes
 ScalaNumericAnyConversions

def
toChar: Char
Returns the value of this as a scala.Char.
Returns the value of this as a scala.Char. This may involve rounding or truncation.
 Definition Classes
 ScalaNumericAnyConversions

def
toDouble: Double
Returns the value of this as a scala.Double.
Returns the value of this as a scala.Double. This may involve rounding or truncation.
 Definition Classes
 ScalaNumericAnyConversions

def
toFloat: Float
Returns the value of this as a scala.Float.
Returns the value of this as a scala.Float. This may involve rounding or truncation.
 Definition Classes
 ScalaNumericAnyConversions

def
toInt: Int
Returns the value of this as an scala.Int.
Returns the value of this as an scala.Int. This may involve rounding or truncation.
 Definition Classes
 ScalaNumericAnyConversions

def
toLong: Long
Returns the value of this as a scala.Long.
Returns the value of this as a scala.Long. This may involve rounding or truncation.
 Definition Classes
 ScalaNumericAnyConversions

def
toShort: Short
Returns the value of this as a scala.Short.
Returns the value of this as a scala.Short. This may involve rounding or truncation.
 Definition Classes
 ScalaNumericAnyConversions

def
toString(): String
Returns a string representation of the object.

def
underlying(): AnyRef
 Definition Classes
 ScalaNumberProxy → ScalaNumericAnyConversions

def
unifiedPrimitiveEquals(x: Any): Boolean
Should only be called after all known nonprimitive types have been excluded.
Should only be called after all known nonprimitive 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.
 Attributes
 protected
 Definition Classes
 ScalaNumericAnyConversions

def
unifiedPrimitiveHashcode(): Int
 Attributes
 protected
 Definition Classes
 ScalaNumericAnyConversions

def
→[B](y: B): (FractionalProxy[T], B)
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to ArrowAssoc[FractionalProxy[T]] performed by method ArrowAssoc in scala.Predef.
 Definition Classes
 ArrowAssoc
Shadowed Implicit Value Members

def
<(that: FractionalProxy[T]): Boolean
Returns true if
this
is less thanthat
Returns true if
this
is less thanthat
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to math.Ordered[FractionalProxy[T]] performed by method orderingToOrdered in scala.math.Ordered. This conversion will take place only if an implicit value of type math.Ordering[FractionalProxy[T]] is in scope.
 Shadowing
 This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:(fractionalProxy: math.Ordered[FractionalProxy[T]]).<(that)
 Definition Classes
 Ordered

def
<=(that: FractionalProxy[T]): Boolean
Returns true if
this
is less than or equal tothat
.Returns true if
this
is less than or equal tothat
. Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to math.Ordered[FractionalProxy[T]] performed by method orderingToOrdered in scala.math.Ordered. This conversion will take place only if an implicit value of type math.Ordering[FractionalProxy[T]] is in scope.
 Shadowing
 This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:(fractionalProxy: math.Ordered[FractionalProxy[T]]).<=(that)
 Definition Classes
 Ordered

def
>(that: FractionalProxy[T]): Boolean
Returns true if
this
is greater thanthat
.Returns true if
this
is greater thanthat
. Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to math.Ordered[FractionalProxy[T]] performed by method orderingToOrdered in scala.math.Ordered. This conversion will take place only if an implicit value of type math.Ordering[FractionalProxy[T]] is in scope.
 Shadowing
 This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:(fractionalProxy: math.Ordered[FractionalProxy[T]]).>(that)
 Definition Classes
 Ordered

def
>=(that: FractionalProxy[T]): Boolean
Returns true if
this
is greater than or equal tothat
.Returns true if
this
is greater than or equal tothat
. Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to math.Ordered[FractionalProxy[T]] performed by method orderingToOrdered in scala.math.Ordered. This conversion will take place only if an implicit value of type math.Ordering[FractionalProxy[T]] is in scope.
 Shadowing
 This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:(fractionalProxy: math.Ordered[FractionalProxy[T]]).>=(that)
 Definition Classes
 Ordered

def
compare(that: FractionalProxy[T]): Int
Result of comparing
this
with operandthat
.Result of comparing
this
with operandthat
.Implement this method to determine how instances of A will be sorted.
Returns
x
where:x < 0
whenthis < that
x == 0
whenthis == that
x > 0
whenthis > that
 Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to math.Ordered[FractionalProxy[T]] performed by method orderingToOrdered in scala.math.Ordered. This conversion will take place only if an implicit value of type math.Ordering[FractionalProxy[T]] is in scope.
 Shadowing
 This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:(fractionalProxy: math.Ordered[FractionalProxy[T]]).compare(that)
 Definition Classes
 Ordered

def
compareTo(that: FractionalProxy[T]): Int
Result of comparing
this
with operandthat
.Result of comparing
this
with operandthat
. Implicit
 This member is added by an implicit conversion from FractionalProxy[T] to math.Ordered[FractionalProxy[T]] performed by method orderingToOrdered in scala.math.Ordered. This conversion will take place only if an implicit value of type math.Ordering[FractionalProxy[T]] is in scope.
 Shadowing
 This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:(fractionalProxy: math.Ordered[FractionalProxy[T]]).compareTo(that)
 Definition Classes
 Ordered → Comparable
Deprecated Value Members

def
to(end: T, step: T): Inclusive[T]
 Definition Classes
 FractionalProxy → RangedProxy
 Annotations
 @deprecated
 Deprecated
(Since version 2.12.6) use BigDecimal range instead

def
to(end: T): ResultWithoutStep
 Definition Classes
 FractionalProxy → RangedProxy
 Annotations
 @deprecated
 Deprecated
(Since version 2.12.6) use BigDecimal range instead

def
until(end: T, step: T): Exclusive[T]
 Definition Classes
 FractionalProxy → RangedProxy
 Annotations
 @deprecated
 Deprecated
(Since version 2.12.6) use BigDecimal range instead

def
until(end: T): ResultWithoutStep
 Definition Classes
 FractionalProxy → RangedProxy
 Annotations
 @deprecated
 Deprecated
(Since version 2.12.6) use BigDecimal range instead
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
.