ArrayBuffer

Companion class ArrayBuffer

object ArrayBuffer extends StrictOptimizedSeqFactory[ArrayBuffer]

Factory object for the ArrayBuffer class.

This object provides a set of operations to create mutable.ArrayBuffer values.

Annotations: @SerialVersionUID()
Source: ArrayBuffer.scala

Linear Supertypes

StrictOptimizedSeqFactory[ArrayBuffer], SeqFactory[ArrayBuffer], IterableFactory[ArrayBuffer], java.io.Serializable, AnyRef, Any

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ArrayBuffer
StrictOptimizedSeqFactory
SeqFactory
IterableFactory
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Value Members

final def !=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
returns
true if !(this == that), false otherwise.
Definition Classes
AnyRef → Any
final def ##: Int
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.
returns
a hash value consistent with ==
Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean
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).
returns
true if the receiver object is equivalent to the argument; false otherwise.
Definition Classes
AnyRef → Any
final val DefaultInitialSize: Int(16)
def apply[A](elems: A*): ArrayBuffer[A]
Creates a array buffer with the specified elements.
Creates a array buffer with the specified elements.
A
the type of the array buffer's elements
elems
the elements of the created array buffer
returns
a new array buffer with elements elems
Definition Classes
IterableFactory
final def asInstanceOf[T0]: T0
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.
returns
the receiver object.
Definition Classes
Any
Exceptions thrown
ClassCastException if the receiver object is not an instance of the erasure of type T0.
def clone(): AnyRef
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone method is platform dependent.
returns
a copy of the receiver object.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @native()
Note
not specified by SLS as a member of AnyRef
def concat[A](xss: collection.Iterable[A]*): ArrayBuffer[A]
Concatenates all argument collections into a single array buffer.
Concatenates all argument collections into a single array buffer.
xss
the collections that are to be concatenated.
returns
the concatenation of all the collections.
Definition Classes
StrictOptimizedSeqFactory → IterableFactory
def empty[A]: ArrayBuffer[A]
An empty collection
An empty collection
A
the type of the array buffer's elements
Definition Classes
ArrayBuffer → IterableFactory
final def eq(arg0: AnyRef): Boolean
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:
- It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
- For any non-null instance 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).
returns
true if the argument is a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
def equals(arg0: AnyRef): Boolean
The equality method for reference types.
The equality method for reference types. Default implementation delegates to eq.
See also equals in scala.Any.
returns
true if the receiver object is equivalent to the argument; false otherwise.
Definition Classes
AnyRef → Any
def fill[A](n: Int)(elem: => A): ArrayBuffer[A]
Produces a array buffer containing the results of some element computation a number of times.
Produces a array buffer containing the results of some element computation a number of times.
n
the number of elements contained in the array buffer.
elem
the element computation
returns
A array buffer that contains the results of n evaluations of elem.
Definition Classes
StrictOptimizedSeqFactory → IterableFactory
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]]
Produces a five-dimensional array buffer containing the results of some element computation a number of times.
Produces a five-dimensional array buffer containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3rd dimension
n4
the number of elements in the 4th dimension
n5
the number of elements in the 5th dimension
elem
the element computation
returns
A array buffer that contains the results of n1 x n2 x n3 x n4 x n5 evaluations of elem.
Definition Classes
IterableFactory
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]
Produces a four-dimensional array buffer containing the results of some element computation a number of times.
Produces a four-dimensional array buffer containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3rd dimension
n4
the number of elements in the 4th dimension
elem
the element computation
returns
A array buffer that contains the results of n1 x n2 x n3 x n4 evaluations of elem.
Definition Classes
IterableFactory
def fill[A](n1: Int, n2: Int, n3: Int)(elem: => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]
Produces a three-dimensional array buffer containing the results of some element computation a number of times.
Produces a three-dimensional array buffer containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3rd dimension
elem
the element computation
returns
A array buffer that contains the results of n1 x n2 x n3 evaluations of elem.
Definition Classes
IterableFactory
def fill[A](n1: Int, n2: Int)(elem: => A): ArrayBuffer[ArrayBuffer[A]]
Produces a two-dimensional array buffer containing the results of some element computation a number of times.
Produces a two-dimensional array buffer containing the results of some element computation a number of times.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
elem
the element computation
returns
A array buffer that contains the results of n1 x n2 evaluations of elem.
Definition Classes
IterableFactory
def finalize(): Unit
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.
Attributes
protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.Throwable])
Note
not specified by SLS as a member of AnyRef
def from[B](coll: IterableOnce[B]): ArrayBuffer[B]
Creates a target array buffer from an existing source collection
Creates a target array buffer from an existing source collection
returns
a new array buffer with the elements of source
Definition Classes
ArrayBuffer → IterableFactory
final def getClass(): Class[_ <: AnyRef]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
returns
a class object corresponding to the runtime type of the receiver.
Definition Classes
AnyRef → Any
Annotations
@native()
def hashCode(): Int
The hashCode method for reference types.
The hashCode method for reference types. See hashCode in scala.Any.
returns
the hash code value for this object.
Definition Classes
AnyRef → Any
Annotations
@native()
final def isInstanceOf[T0]: Boolean
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.
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.
Definition Classes
Any
implicit def iterableFactory[A]: Factory[A, ArrayBuffer[A]]
Definition Classes
IterableFactory
def iterate[A](start: A, len: Int)(f: (A) => A): ArrayBuffer[A]
Produces a array buffer containing repeated applications of a function to a start value.
Produces a array buffer containing repeated applications of a function to a start value.
start
the start value of the array buffer
len
the number of elements contained in the array buffer
f
the function that's repeatedly applied
returns
a array buffer with len values in the sequence start, f(start), f(f(start)), ...
Definition Classes
IterableFactory
final def ne(arg0: AnyRef): Boolean
Equivalent to !(this eq that).
Equivalent to !(this eq that).
returns
true if the argument is not a reference to the receiver object; false otherwise.
Definition Classes
AnyRef
def newBuilder[A]: Builder[A, ArrayBuffer[A]]
A
the type of the array buffer’s elements
returns
A builder for mutable.ArrayBuffer objects.
Definition Classes
ArrayBuffer → IterableFactory
final def notify(): Unit
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.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
final def notifyAll(): Unit
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.
Definition Classes
AnyRef
Annotations
@native()
Note
not specified by SLS as a member of AnyRef
def range[A](start: A, end: A, step: A)(implicit arg0: Integral[A]): ArrayBuffer[A]
Produces a array buffer containing equally spaced values in some integer interval.
Produces a array buffer containing equally spaced values in some integer interval.
start
the start value of the array buffer
end
the end value of the array buffer (the first value NOT contained)
step
the difference between successive elements of the array buffer (must be positive or negative)
returns
a array buffer with values start, start + step, ... up to, but excluding end
Definition Classes
IterableFactory
def range[A](start: A, end: A)(implicit arg0: Integral[A]): ArrayBuffer[A]
Produces a array buffer containing a sequence of increasing of integers.
Produces a array buffer containing a sequence of increasing of integers.
start
the first element of the array buffer
end
the end value of the array buffer (the first value NOT contained)
returns
a array buffer with values start, start + 1, ..., end - 1
Definition Classes
IterableFactory
final def synchronized[T0](arg0: => T0): T0
Executes the code in body with an exclusive lock on this.
Executes the code in body with an exclusive lock on this.
returns
the result of body
Definition Classes
AnyRef
def tabulate[A](n: Int)(f: (Int) => A): ArrayBuffer[A]
Produces a array buffer containing values of a given function over a range of integer values starting from 0.
Produces a array buffer containing values of a given function over a range of integer values starting from 0.
n
The number of elements in the array buffer
f
The function computing element values
returns
A array buffer consisting of elements f(0), ..., f(n -1)
Definition Classes
StrictOptimizedSeqFactory → IterableFactory
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]]
Produces a five-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
Produces a five-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3rd dimension
n4
the number of elements in the 4th dimension
n5
the number of elements in the 5th dimension
f
The function computing element values
returns
A array buffer consisting of elements f(i1, i2, i3, i4, i5) for 0 <= i1 < n1, 0 <= i2 < n2, 0 <= i3 < n3, 0 <= i4 < n4, and 0 <= i5 < n5.
Definition Classes
IterableFactory
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]
Produces a four-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
Produces a four-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3rd dimension
n4
the number of elements in the 4th dimension
f
The function computing element values
returns
A array buffer consisting of elements f(i1, i2, i3, i4) for 0 <= i1 < n1, 0 <= i2 < n2, 0 <= i3 < n3, and 0 <= i4 < n4.
Definition Classes
IterableFactory
def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]
Produces a three-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
Produces a three-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
n3
the number of elements in the 3rd dimension
f
The function computing element values
returns
A array buffer consisting of elements f(i1, i2, i3) for 0 <= i1 < n1, 0 <= i2 < n2, and 0 <= i3 < n3.
Definition Classes
IterableFactory
def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) => A): ArrayBuffer[ArrayBuffer[A]]
Produces a two-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
Produces a two-dimensional array buffer containing values of a given function over ranges of integer values starting from 0.
n1
the number of elements in the 1st dimension
n2
the number of elements in the 2nd dimension
f
The function computing element values
returns
A array buffer consisting of elements f(i1, i2) for 0 <= i1 < n1 and 0 <= i2 < n2.
Definition Classes
IterableFactory
def toString(): String
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.
returns
a String representation of the object.
Definition Classes
AnyRef → Any
final def unapplySeq[A](x: ArrayBuffer[A]): UnapplySeqWrapper[A]
Definition Classes
SeqFactory
def unfold[A, S](init: S)(f: (S) => Option[(A, S)]): ArrayBuffer[A]
Produces a array buffer that uses a function f to produce elements of type A and update an internal state of type S.
Produces a array buffer that uses a function f to produce elements of type A and update an internal state of type S.
A
Type of the elements
S
Type of the internal state
init
State initial value
f
Computes the next element (or returns None to signal the end of the collection)
returns
a array buffer that produces elements using f until f returns None
Definition Classes
IterableFactory
final def wait(): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long, arg1: Int): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
Note
not specified by SLS as a member of AnyRef
final def wait(arg0: Long): Unit
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()
Note
not specified by SLS as a member of AnyRef

Packages

Package structure

Automatic imports

ArrayBuffer

Companion class ArrayBuffer

object ArrayBuffer extends StrictOptimizedSeqFactory[ArrayBuffer]

Value Members

Inherited from StrictOptimizedSeqFactory[ArrayBuffer]

Inherited from SeqFactory[ArrayBuffer]

Inherited from IterableFactory[ArrayBuffer]

Inherited from java.io.Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped

Packages

Package structure

Automatic imports

ArrayBuffer

Companion class ArrayBuffer

object ArrayBuffer extends StrictOptimizedSeqFactory[ArrayBuffer]

Value Members

Inherited from StrictOptimizedSeqFactory[ArrayBuffer]

Inherited from SeqFactory[ArrayBuffer]

Inherited from IterableFactory[ArrayBuffer]

Inherited from java.io.Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped

ArrayBuffer