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.
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)
AttributesReturn true if x == y in the ordering.
Return true if x == y in the ordering.
Return true if x > y in the ordering.
Return true if x > y in the ordering.
Return true if x >= y in the ordering.
Return true if x >= y in the ordering.
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.
AttributesReturn true if x < y in the ordering.
Return true if x < y in the ordering.
Return true if x <= y in the ordering.
Return true if x <= y in the ordering.
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))
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.
an Ordering to use if this Ordering returns zero
case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
.orElse(Ordering.by[Pair, Int](_.b))
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.
case class Pair(a: Int, b: Int)
val pairOrdering = Ordering.by[Pair, Int](_.a)
.orElseBy[Int](_.b)
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).
AttributesReturns 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).
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.
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