Sorting
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package util
Test two objects for inequality.
Test two objects for inequality.
true if !(this == that), false otherwise.
Equivalent to x.hashCode except for boxed numeric types and null.
Equivalent to x.hashCode except for boxed numeric types and null.
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.
For null returns a hashcode where null.hashCode throws a
NullPointerException.
a hash value consistent with ==
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
true if the receiver object is equivalent to the argument; false otherwise.
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 a ClassCastException at
runtime, while the expression List(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.
the receiver object.
ClassCastException if the receiver object is not an instance of the erasure of type T0.
Create a copy of the receiver object.
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
non-null instances of AnyRef, and has three additional properties:
x and y of type AnyRef, multiple invocations of
x.eq(y) consistently returns true or consistently returns false.x of type AnyRef, x.eq(null) and null.eq(x) returns false.null.eq(null) returns true. When overriding the equals or hashCode 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).
true if the argument is a reference to the receiver object; false otherwise.
The equality method for reference types.
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 between finalize and non-local returns
and exceptions, are all platform dependent.
A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
not specified by SLS as a member of AnyRef
The hashCode method for reference types.
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 return false, while the
expression List(1).isInstanceOf[List[String]] will return true.
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.
true if the receiver object is an instance of erasure of type T0; false otherwise.
Equivalent to !(this eq that).
Equivalent to !(this eq that).
true if the argument is not a reference to the receiver object; false otherwise.
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.
not specified by SLS as a member of AnyRef
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.
not specified by SLS as a member of AnyRef
Sort array a with quicksort, using the Ordering on its elements.
Sort array a with quicksort, using the Ordering on its elements.
This algorithm sorts in place, so no additional memory is used aside from
what might be required to box individual elements during comparison.
Sort an array of Floats using java.util.Arrays.sort.
Sort an array of Ints using java.util.Arrays.sort.
Sort an array of Doubles using java.util.Arrays.sort.
A sorted Array, given an extraction function f that returns an ordered key for each item in the sequence a.
A sorted Array, given an extraction function f that returns an ordered key for each item in the sequence a. Uses java.util.Arrays.sort unless K is a primitive type.
A sorted Array, given a function f that computes the less-than relation for each item in the sequence a.
A sorted Array, given a function f that computes the less-than relation for each item in the sequence a. Uses java.util.Arrays.sort unless K is a primitive type.
A sorted Array, using the Ordering for the elements in the sequence a.
A sorted Array, using the Ordering for the elements in the sequence a. Uses java.util.Arrays.sort unless K is a primitive type.
Sort array a using function f that computes the less-than relation for each element.
Sort array a using function f that computes the less-than relation for each element. Uses java.util.Arrays.sort unless K is a primitive type.
Sort array a using the Ordering on its elements, preserving the original ordering where possible.
Sort array a using the Ordering on its elements, preserving the original ordering where possible. Uses java.util.Arrays.sort unless K is a primitive type.
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.
a String representation of the object.
The
Sortingobject provides convenience wrappers forjava.util.Arrays.sort. Methods that defer tojava.util.Arrays.sortsay that they do or under what conditions that they do.Sortingalso implements a general-purpose quicksort and stable (merge) sort for those cases wherejava.util.Arrays.sortcould only be used at the cost of a large memory penalty. If performance rather than memory usage is the primary concern, one may wish to find alternate strategies to usejava.util.Arrays.sortdirectly e.g. by boxing primitives to use a custom ordering on them.Sortingprovides methods where you can provide a comparison function, or can request a sort of items that are scala.math.Ordered or that otherwise have an implicit or explicit scala.math.Ordering.Note also that high-performance non-default sorts for numeric types are not provided. If this is required, it is advisable to investigate other libraries that cover this use case.
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