TotalOrdering (original) (raw)
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.
Attributes
Inherited from:
Source
Supertypes
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)
Attributes
Source
Return true if x == y in the ordering.
Return true if x == y in the ordering.
Attributes
Definition Classes
Inherited from:
Source
Return true if x > y in the ordering.
Return true if x > y in the ordering.
Attributes
Definition Classes
Inherited from:
Source
Return true if x >= y in the ordering.
Return true if x >= y in the ordering.
Attributes
Definition Classes
Inherited from:
Source
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.
Attributes
Inherited from:
Source
Return true if x < y in the ordering.
Return true if x < y in the ordering.
Attributes
Definition Classes
Inherited from:
Source
Return true if x <= y in the ordering.
Return true if x <= y in the ordering.
Attributes
Definition Classes
Inherited from:
Source
Return x if x >= y, otherwise y.
Return x if x <= y, otherwise y.
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))
Attributes
Inherited from:
Source
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 parameters
other
an Ordering to use if this Ordering returns zero
Attributes
Example
case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
.orElse(Ordering.by[Pair, Int](_.b))
Inherited from:
Source
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.
Attributes
Example
case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
.orElseBy[Int](_.b)
Inherited from:
Source
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).
Attributes
Definition Classes
Inherited from:
Source
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).
Attributes
Inherited from:
Source
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.
Attributes
Inherited from:
Source