Scala 3/scala.math/Fractional

Fractional

trait Fractional[T] extends Numeric[T]
Companion
object
Source
Fractional.scala
trait Numeric[T]
trait Ordering[T]
trait Equiv[T]
trait Comparator[T]
class Object
trait Matchable
class Any

Type members

Classlikes

class FractionalOps(lhs: T) extends NumericOps

Inherited classlikes

class NumericOps(lhs: T)
Inherited from
Numeric
Source
Numeric.scala
class OrderingOps(lhs: T)

This inner class defines comparison operators available for T.

This inner class defines comparison operators available for T.

It can't extend AnyVal because it is not a top-level class or a member of a statically accessible object.

Inherited from
Ordering
Source
Ordering.scala

Value members

Abstract methods

def div(x: T, y: T): T

Inherited methods

def abs(x: T): T
Inherited from
Numeric
Source
Numeric.scala
def compare(x: T, y: T): Int

Returns an integer whose sign communicates how x compares to y.

Returns an integer whose sign communicates how x compares to y.

The result sign has the following meaning:

- negative if x < y - positive if x > y - zero otherwise (if x == y)

Inherited from
Ordering
Source
Ordering.scala
override def equiv(x: T, y: T): Boolean

Return true if x == y in the ordering.

Return true if x == y in the ordering.

Definition Classes
Inherited from
Ordering
Source
Ordering.scala
def fromInt(x: Int): T
Inherited from
Numeric
Source
Numeric.scala
override def gt(x: T, y: T): Boolean

Return true if x > y in the ordering.

Return true if x > y in the ordering.

Definition Classes
Inherited from
Ordering
Source
Ordering.scala
override def gteq(x: T, y: T): Boolean

Return true if x >= y in the ordering.

Return true if x >= y in the ordering.

Definition Classes
Inherited from
Ordering
Source
Ordering.scala
def isReverseOf(other: Ordering[_]): Boolean

Returns whether or not the other ordering is the opposite ordering of this one.

Returns whether or not the other ordering is the opposite ordering of this one.

Equivalent to other == this.reverse.

Implementations should only override this method if they are overriding reverse as well.

Inherited from
Ordering
Source
Ordering.scala
override def lt(x: T, y: T): Boolean

Return true if x < y in the ordering.

Return true if x < y in the ordering.

Definition Classes
Inherited from
Ordering
Source
Ordering.scala
override def lteq(x: T, y: T): Boolean

Return true if x <= y in the ordering.

Return true if x <= y in the ordering.

Definition Classes
Inherited from
Ordering
Source
Ordering.scala
def max[U <: T](x: U, y: U): U

Return x if x >= y, otherwise y.

Return x if x >= y, otherwise y.

Inherited from
Ordering
Source
Ordering.scala
def min[U <: T](x: U, y: U): U

Return x if x <= y, otherwise y.

Return x if x <= y, otherwise y.

Inherited from
Ordering
Source
Ordering.scala
def minus(x: T, y: T): T
Inherited from
Numeric
Source
Numeric.scala
def negate(x: T): T
Inherited from
Numeric
Source
Numeric.scala
def on[U](f: U => T): Ordering[U]

Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:

Given f, a function from U into T, creates an Ordering[U] whose compare function is equivalent to:

def compare(x:U, y:U) = Ordering[T].compare(f(x), f(y))
Inherited from
Ordering
Source
Ordering.scala
def one: T
Inherited from
Numeric
Source
Numeric.scala
def orElse(other: Ordering[T]): Ordering[T]

Creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else the result of others compare function.

Creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else the result of others compare function.

Value Params
other

an Ordering to use if this Ordering returns zero

Example

case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
                          .orElse(Ordering.by[Pair, Int](_.b))
Inherited from
Ordering
Source
Ordering.scala
def orElseBy[S](f: T => S)(implicit ord: Ordering[S]): Ordering[T]

Given f, a function from T into S, creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else a result equivalent to:

Given f, a function from T into S, creates an Ordering[T] whose compare function returns the result of this Ordering's compare function, if it is non-zero, or else a result equivalent to:

Ordering[S].compare(f(x), f(y))

This function is equivalent to passing the result of Ordering.by(f) to orElse.

Example

case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
                          .orElseBy[Int](_.b)
Inherited from
Ordering
Source
Ordering.scala
def parseString(str: String): Option[T]
Inherited from
Numeric
Source
Numeric.scala
def plus(x: T, y: T): T
Inherited from
Numeric
Source
Numeric.scala
override def reverse: Ordering[T]

Return the opposite ordering of this one.

Return the opposite ordering of this one.

Implementations overriding this method MUST override isReverseOf as well if they change the behavior at all (for example, caching does not require overriding it).

Definition Classes
Inherited from
Ordering
Source
Ordering.scala
def reversed(): Comparator[T]
Inherited from
Comparator
def sign(x: T): T
Inherited from
Numeric
Source
Numeric.scala
def thenComparing[U <: Comparable[_ >: U <: <FromJavaObject>]](x$0: Function[_ >: T <: <FromJavaObject>, _ <: U]): Comparator[T]
Inherited from
Comparator
def thenComparing[U <: <FromJavaObject>](x$0: Function[_ >: T <: <FromJavaObject>, _ <: U], x$1: Comparator[_ >: U <: <FromJavaObject>]): Comparator[T]
Inherited from
Comparator
def thenComparing(x$0: Comparator[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from
Comparator
def thenComparingDouble(x$0: ToDoubleFunction[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from
Comparator
def thenComparingInt(x$0: ToIntFunction[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from
Comparator
def thenComparingLong(x$0: ToLongFunction[_ >: T <: <FromJavaObject>]): Comparator[T]
Inherited from
Comparator
def times(x: T, y: T): T
Inherited from
Numeric
Source
Numeric.scala
def toDouble(x: T): Double
Inherited from
Numeric
Source
Numeric.scala
def toFloat(x: T): Float
Inherited from
Numeric
Source
Numeric.scala
def toInt(x: T): Int
Inherited from
Numeric
Source
Numeric.scala
def toLong(x: T): Long
Inherited from
Numeric
Source
Numeric.scala
def tryCompare(x: T, y: T): Option[Int]

Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).

Returns whether a comparison between x and y is defined, and if so the result of compare(x, y).

Inherited from
Ordering
Source
Ordering.scala
def zero: T
Inherited from
Numeric
Source
Numeric.scala

Deprecated and Inherited methods

@deprecated("use `sign` method instead", since = "2.13.0")
def signum(x: T): Int
Deprecated
[Since version 2.13.0]
Inherited from
Numeric
Source
Numeric.scala

Implicits

Implicits

implicit override def mkNumericOps(lhs: T): FractionalOps
Definition Classes
Source
Fractional.scala

Inherited implicits

implicit def mkOrderingOps(lhs: T): OrderingOps

This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.

This implicit method augments T with the comparison operators defined in scala.math.Ordering.Ops.

Inherited from
Ordering
Source
Ordering.scala