scala.collection.generic

# Subtractable

#### trait Subtractable[A, +Repr <: Subtractable[A, Repr]] extends AnyRef

This trait represents collection-like objects that can be reduced using a '+' operator. It defines variants of `-` and `--` as convenience methods in terms of single-element removal `-`.

A

  the type of the elements of the collection.

Repr

  the type of the collection itself

Self Type
  Subtractable[A, Repr]
Version

  2.8

Since

  2.8

Linear Supertypes
AnyRef, Any
Known Subclasses
AbstractBuffer, AbstractMap, AbstractMap, AbstractMap, AbstractSet, AbstractSet, AnyRefMap, ArrayBuffer, BitSet, BitSet, BitSet, BitSet1, BitSet2, BitSetLike, BitSetN, Buffer, BufferLike, BufferProxy, DefaultKeySet, DefaultKeySet, DefaultKeySortedSet, DefaultKeySortedSet, DefaultMap, DefaultMap, DefaultMapModel, FilteredKeys, FilteredKeys, HashMap, HashMap, HashMap1, HashSet, HashSet, HashTrieMap, HashTrieSet, ImmutableDefaultKeySet, ImmutableMapAdaptor, ImmutableSetAdaptor, IntMap, LinkedHashMap, LinkedHashSet, ListBuffer, ListMap, ListMap, ListSet, LongMap, LongMap, Map, Map, Map, Map, Map1, Map2, Map3, Map4, MapLike, MapLike, MapLike, MapProxy, MapProxy, MapProxy, MapProxyLike, MappedValues, MappedValues, MultiMap, Node, Node, ObservableBuffer, ObservableMap, ObservableSet, OpenHashMap, Script, Set, Set, Set, Set1, Set2, Set3, Set4, SetLike, SetLike, SetProxy, SetProxy, SetProxy, SetProxyLike, SortedMap, SortedMap, SortedMapLike, SortedSet, SortedSet, SortedSet, SortedSetLike, SynchronizedBuffer, SynchronizedMap, SynchronizedSet, SystemProperties, TreeMap, TreeSet, TreeSet, TrieMap, UnrolledBuffer, ValueSet, WithDefault, WithDefault, WithDefault
Type Hierarchy Learn more about scaladoc diagrams
Ordering

1. Alphabetic
2. By inheritance

Inherited

1. Subtractable
2. AnyRef
3. Any

Implicitly

1. by any2stringadd
2. by StringFormat
3. by Ensuring
4. by ArrowAssoc

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Visibility

1. Public
2. All

### Abstract Value Members

1. #### abstract def -(elem: A): Repr

   Creates a new collection from this collection with an element removed.

   Creates a new collection from this collection with an element removed.

   elem

     the element to remove

   returns

     a new collection that contains all elements of the current collection except one less occurrence of `elem`.

2. #### abstract def repr: Repr

   The representation object of type `Repr` which contains the collection's elements

   The representation object of type `Repr` which contains the collection's elements

   Attributes
     protected

### Concrete Value Members

1. #### final def !=(arg0: Any): Boolean

   Definition Classes
     AnyRef → Any

2. #### final def ##(): Int

   Definition Classes
     AnyRef → Any

3. #### def +(other: String): String

   Implicit information
     This member is added by an implicit conversion from Subtractable[A, Repr] to any2stringadd[Subtractable[A, Repr]] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd

4. #### def -(elem1: A, elem2: A, elems: A*): Repr

   Creates a new collection from this collection with some elements removed.

   Creates a new collection from this collection with some elements removed.

   This method takes two or more elements to be removed. Another overloaded variant of this method handles the case where a single element is removed.

   elem1

     the first element to remove.

   elem2

     the second element to remove.

   elems

     the remaining elements to remove.

   returns

     a new collection that contains all elements of the current collection except one less occurrence of each of the given elements.

5. #### def --(xs: GenTraversableOnce[A]): Repr

   Creates a new collection from this collection by removing all elements of another collection.

   Creates a new collection from this collection by removing all elements of another collection.

   xs

     the collection containing the removed elements.

   returns

     a new collection that contains all elements of the current collection except one less occurrence of each of the elements of `elems`.

6. #### def ->[B](y: B): (Subtractable[A, Repr], B)

   Implicit information
     This member is added by an implicit conversion from Subtractable[A, Repr] to ArrowAssoc[Subtractable[A, Repr]] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()

7. #### final def ==(arg0: Any): Boolean

   Definition Classes
     AnyRef → Any

8. #### final def asInstanceOf[T0]: T0

   Definition Classes
     Any

9. #### def clone(): AnyRef

   Attributes
     protected[java.lang]
   Definition Classes
     AnyRef
   Annotations
     @throws( ... )

10. #### def ensuring(cond: (Subtractable[A, Repr]) ⇒ Boolean, msg: ⇒ Any): Subtractable[A, Repr]

    Implicit information
      This member is added by an implicit conversion from Subtractable[A, Repr] to Ensuring[Subtractable[A, Repr]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

11. #### def ensuring(cond: (Subtractable[A, Repr]) ⇒ Boolean): Subtractable[A, Repr]

    Implicit information
      This member is added by an implicit conversion from Subtractable[A, Repr] to Ensuring[Subtractable[A, Repr]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

12. #### def ensuring(cond: Boolean, msg: ⇒ Any): Subtractable[A, Repr]

    Implicit information
      This member is added by an implicit conversion from Subtractable[A, Repr] to Ensuring[Subtractable[A, Repr]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

13. #### def ensuring(cond: Boolean): Subtractable[A, Repr]

    Implicit information
      This member is added by an implicit conversion from Subtractable[A, Repr] to Ensuring[Subtractable[A, Repr]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

14. #### final def eq(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

15. #### def equals(arg0: Any): Boolean

    Definition Classes
      AnyRef → Any

16. #### def finalize(): Unit

    Attributes
      protected[java.lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )

17. #### 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 for `String.format` (@see java.lang.String.format).

    Implicit information
      This member is added by an implicit conversion from Subtractable[A, Repr] to StringFormat[Subtractable[A, Repr]] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()

18. #### final def getClass(): Class[_]

    Definition Classes
      AnyRef → Any

19. #### def hashCode(): Int

    Definition Classes
      AnyRef → Any

20. #### final def isInstanceOf[T0]: Boolean

    Definition Classes
      Any

21. #### final def ne(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

22. #### final def notify(): Unit

    Definition Classes
      AnyRef

23. #### final def notifyAll(): Unit

    Definition Classes
      AnyRef

24. #### final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
      AnyRef

25. #### def toString(): String

    Definition Classes
      AnyRef → Any

26. #### final def wait(): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

27. #### final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

28. #### final def wait(arg0: Long): Unit

    Definition Classes
      AnyRef
    Annotations
      @throws( ... )

29. #### def →[B](y: B): (Subtractable[A, Repr], B)

    Implicit information
      This member is added by an implicit conversion from Subtractable[A, Repr] to ArrowAssoc[Subtractable[A, Repr]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion any2stringadd from Subtractable[A, Repr] to any2stringadd[Subtractable[A, Repr]]

### Inherited by implicit conversion StringFormat from Subtractable[A, Repr] to StringFormat[Subtractable[A, Repr]]

### Inherited by implicit conversion Ensuring from Subtractable[A, Repr] to Ensuring[Subtractable[A, Repr]]

### Inherited by implicit conversion ArrowAssoc from Subtractable[A, Repr] to ArrowAssoc[Subtractable[A, Repr]]

### Ungrouped