XDoubleSequence (Talon 3.16.63 API)

java.lang.Object
- com.neeve.lang.XDoubleSequence

All Implemented Interfaces:

XDoubleIterator
```
public final class XDoubleSequence
extends Object
implements XDoubleIterator
```
Wraps a set of bytes representing a serialized sequence of doubles.
An XDoubleSequence stores a set of bytes in native memory. Its views the stored bytes as a sequence of doubles and provides methods to read and modify these values.

To use an instance of this class, the user first needs to initialize the instance by wrapping it around a memory region containing the serialized double sequence. This is done using one of the wrap() or setFrom() methods. Once the instance has been initialized, the user can use the data accessor and modification methods to access and/or modify the the sequence managed by this class.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static XDoubleSequence`	`create()` Create a new double sequence reader
`int`	`getTo(byte[] val, int offset)` Copy the serialized double sequence to a byte array object
`int`	`getTo(double[] val, int offset)` Copy the serialized double sequence to a double array object
`int`	`getTo(long addr, int offset)` Copy the serialized double sequence to a native memory region
`int`	`getTo(com.neeve.quark.QuarkBuffer val, int offset)` Copy the serialized double sequence to a `QuarkBuffer`
`boolean`	`hasNext()` Implementation of `XDoubleIterator.hasNext()`
`boolean`	`isInitialized()` Get if the sequence has been initialized or nor
`boolean`	`isOwned()` Get if the sequence was initialized by copying or wrapping
`XDoubleIterator`	`iterator()` Get an iterator to iterate over a double sequence values
`double`	`next()` Implementation of `XDoubleIterator.next()`
`int`	`numElements()` Get the number of elements in a double sequence
`void`	`remove()` Implementation of `XDoubleIterator.remove()`
`XDoubleSequence`	`reset()` Reset a double sequence
`int`	`serializedLength()` Get the serialized length of a double sequence
`XDoubleSequence`	`setFrom(long addr, int offset, int len)` Initialize a sequence by copying a double sequence serialized in a native memory region to a private backing store
`XDoubleSequence`	`setFrom(com.neeve.quark.QuarkBuffer buffer, int offset, int len)` Initialize a sequence by copying a double sequence serialized in a `QuarkBuffer`
`XDoubleSequence`	`setFrom(XDoubleIterator iterator)` Initialize a sequence by copying a double sequence using a `XDoubleIterator`
`XDoubleSequence`	`setFrom(XDoubleSequence sequence)` Initialize a sequence by copying a double sequence from a `XDoubleSequence`
`XDoubleIterator`	`toFirst()` Implementation of `XDoubleIterator.toFirst()`
`XDoubleSequence`	`wrap(long addr, int offset, int len)` Initialize a sequence by wrapping it around a double sequence serialized in a native memory region
`XDoubleSequence`	`wrap(com.neeve.quark.QuarkBuffer buffer, int offset, int len)` Initialize a sequence by wrapping it around a double sequence serialized in a `QuarkBuffer`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - create
```
public static final XDoubleSequence create()
```
    Create a new double sequence reader
  - isInitialized
```
public final boolean isInitialized()
```
    Get if the sequence has been initialized or nor
    
    Returns:
    
    true if sequence has been initialized and false if not
  - isOwned
```
public final boolean isOwned()
```
    Get if the sequence was initialized by copying or wrapping
    
    Returns:
    
    true if sequence was initialized by copying (setFrom() method) and false if initialized by wrapping (wrap() method)
  - toFirst
```
public XDoubleIterator toFirst()
```
    Implementation of XDoubleIterator.toFirst()
    
    Specified by:
    
    toFirst in interface XDoubleIterator
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - hasNext
```
public final boolean hasNext()
```
    Implementation of XDoubleIterator.hasNext()
    
    Specified by:
    
    hasNext in interface XDoubleIterator
    
    Returns:
    
    true if the iterator has more elements.
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - next
```
public final double next()
```
    Implementation of XDoubleIterator.next()
    
    Specified by:
    
    next in interface XDoubleIterator
    
    Returns:
    
    the next element in the iteration.
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - remove
```
public final void remove()
```
    Implementation of XDoubleIterator.remove()
    
    Specified by:
    
    remove in interface XDoubleIterator
  - wrap
```
public final XDoubleSequence wrap(long addr,
                                  int offset,
                                  int len)
```
    Initialize a sequence by wrapping it around a double sequence serialized in a native memory region
    
    Parameters:
    
    addr - The address of the memory region containing the serialized double sequence
    
    offset - The offset from the start of the memory region where the serialized sequence is stored
    
    len - The length of the serialized double sequence
    
    Returns:
    
    Returns this for invocation chaining
    This method initializes a sequence's backing data pointers to a native memory region containing the serialized double sequence. This method does not make a copy of the serialized sequence. Therefore, the user must ensure that the source is not modified or freed as long as the sequence is in active use or reset() is invoked.
    
    This method can be invoked repeatedly with different backing stores. Each invocation resets all internal markers.
    
    This method implictly invokes reset() as part of its processing
  - wrap
```
public final XDoubleSequence wrap(com.neeve.quark.QuarkBuffer buffer,
                                  int offset,
                                  int len)
```
    Initialize a sequence by wrapping it around a double sequence serialized in a QuarkBuffer
    
    Parameters:
    
    buffer - The buffer containing the serialized double sequence
    
    offset - The offset into the buffer where the serialized double sequence is stored
    
    len - The length of the serialized double sequence
    
    Returns:
    
    Returns this for invocation chaining
    This method initializes a sequence's backing data pointers to the section of a QuarkBuffer containing the serialized double sequence. This method does not make a copy of the serialized sequence. Therefore, the user must ensure that the source is not modified or freed as long as the sequence is in active use or reset() is invoked.
    
    This method can be invoked repeatedly with different backing stores. Each invocation resets all internal markers.
    
    This method implictly invokes reset() as part of its processing
  - setFrom
```
public final XDoubleSequence setFrom(long addr,
                                     int offset,
                                     int len)
```
    Initialize a sequence by copying a double sequence serialized in a native memory region to a private backing store
    
    Parameters:
    
    addr - The address of the memory region containing the serialized double sequence
    
    offset - The offset from the start of the memory region where the serialized sequence is stored
    
    len - The length of the serialized double sequence
    
    Returns:
    
    Returns this for invocation chaining
    This method initializes a sequence by copying a double sequence serialized in a native memory region to a backing store that is private to the sequence object. Once done with using the sequence instance, the user must invoke reset() to release the resources held by the backing store or release the sequence object to the garbage collector in which case the backing store resources will be released when the object is collected by the garbage collector.
    
    This method can be invoked repeatedly with different backing stores. Each invocation invokes reset() and performs a fresh initialization of the backing store.
  - setFrom
```
public final XDoubleSequence setFrom(com.neeve.quark.QuarkBuffer buffer,
                                     int offset,
                                     int len)
```
    Initialize a sequence by copying a double sequence serialized in a QuarkBuffer
    
    Parameters:
    
    buffer - The buffer containing the serialized double sequence
    
    offset - The offset into the buffer where the serialized double sequence is stored
    
    len - The length of the serialized double sequence
    
    Returns:
    
    Returns this for invocation chaining
    This method initializes a sequence by copying a double sequence serialized in a QuarkBuffer to a backing store that is private to the sequence object. Once done with using the sequence instance, the user must invoke reset() to release the resources held by the backing store or release the sequence object to the garbage collector in which case the backing store resources will be released when the object is collected by the garbage collector.
    
    This method can be invoked repeatedly with different backing stores. Each invocation invokes reset() and performs a fresh initialization of the backing store.
  - setFrom
```
public final XDoubleSequence setFrom(XDoubleSequence sequence)
```
    Initialize a sequence by copying a double sequence from a XDoubleSequence
    
    Parameters:
    
    iterator - The source sequence
    
    Returns:
    
    Returns this for invocation chaining
    This method initializes a sequence by copying a double sequence from a XDoubleSequence to a backing store that is private to the sequence object. Once done with using the sequence instance, the user must invoke reset() to release the resources held by the backing store or release the sequence object to the garbage collector in which case the backing store resources will be released when the object is collected by the garbage collector.
    
    This method can be invoked repeatedly with different backing stores. Each invocation invokes reset() and performs a fresh initialization of the backing store.
  - setFrom
```
public final XDoubleSequence setFrom(XDoubleIterator iterator)
```
    Initialize a sequence by copying a double sequence using a XDoubleIterator
    
    Parameters:
    
    iterator - The iterator to use to access the sequence
    
    Returns:
    
    Returns this for invocation chaining
    This method initializes a sequence by copying a double sequence using a XDoubleIterator to a backing store that is private to the sequence object. Once done with using the sequence instance, the user must invoke reset() to release the resources held by the backing store or release the sequence object to the garbage collector in which case the backing store resources will be released when the object is collected by the garbage collector.
    
    This method can be invoked repeatedly with different backing stores. Each invocation invokes reset() and performs a fresh initialization of the backing store.
  - numElements
```
public final int numElements()
```
    Get the number of elements in a double sequence
    
    Returns:
    
    The number of elements in the sequence
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - serializedLength
```
public final int serializedLength()
```
    Get the serialized length of a double sequence
    
    Returns:
    
    The serialized length of the sequence
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - getTo
```
public final int getTo(double[] val,
                       int offset)
```
    Copy the serialized double sequence to a double array object
    
    Parameters:
    
    val - The destination array object to copy to
    
    offset - The offset into the destination array to copy to
    
    Returns:
    
    The number of bytes copied
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - getTo
```
public final int getTo(byte[] val,
                       int offset)
```
    Copy the serialized double sequence to a byte array object
    
    Parameters:
    
    val - The destination array object to copy to
    
    offset - The offset into the destination array to copy to
    
    Returns:
    
    The number of bytes copied
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - getTo
```
public final int getTo(long addr,
                       int offset)
```
    Copy the serialized double sequence to a native memory region
    
    Parameters:
    
    addr - The destination memory region to copy to
    
    offset - The offset into memory region to copy to
    
    Returns:
    
    The number of bytes copied
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - getTo
```
public final int getTo(com.neeve.quark.QuarkBuffer val,
                       int offset)
```
    Copy the serialized double sequence to a QuarkBuffer
    
    Parameters:
    
    val - The destination buffer to copy to
    
    offset - The offset into buffer to copy to
    
    Returns:
    
    The number of bytes copied
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - iterator
```
public final XDoubleIterator iterator()
```
    Get an iterator to iterate over a double sequence values
    
    Returns:
    
    The returned iterator
    
    Throws:
    
    IllegalStateException - Thrown if the sequence has not been initialized via a wrap() or setFrom method
  - reset
```
public final XDoubleSequence reset()
```
    Reset a double sequence
    
    Returns:
    
    Returns this for invocation chaining
    This method resets a double sequence. It releases all resources used by the sequence's private backing store

Class XDoubleSequence

Method Summary

Methods inherited from class java.lang.Object

Method Detail

create

isInitialized

isOwned

toFirst

hasNext

next

remove

wrap

wrap

setFrom

setFrom

setFrom

setFrom

numElements

serializedLength

getTo

getTo

getTo

getTo

iterator

reset