IndexList (QDL root module 1.6.0 API)

java.lang.Object
- java.util.AbstractCollection<E>
- - java.util.AbstractList<E>
  - - java.util.ArrayList
    - - org.qdl_lang.expressions.IndexList

All Implemented Interfaces:

Serializable, Cloneable, Iterable, Collection, List, RandomAccess
```
public class IndexList
extends ArrayList
```
A simple list of indices for a stem. This refers to a single value. so if this is [1,2,3,4] then this is interpreted when accessing the stem as

a.1.2.3.4 == a.[1,2,3,4]

It is assumed that all values have been resolved, so these are just constants, though they may be used to resolve other values. E.g.
```
     a.2.b.[1,2] == a.2.(b.1.2)
 
```
So the index is used to resolve b.
Created by Jeff Gaynor
on 6/12/21 at 6:47 AM
See Also:

Serialized Form

Field Summary
- Fields inherited from class java.util.AbstractList
  modCount

Constructor Summary

Constructors
Constructor	Description
`IndexList()`
`IndexList(int initialCapacity)`	Unlike standard `ArrayList`, this fills up the list with nulls.
`IndexList(QDLStem stemVariable)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`IndexList`	`clone()`
`List<IndexList>`	`clone(int n)`	Return n clones of this object, so if this object has m elements, this returns n*m elements.
`IndexList`	`tail(int n)`	return the last n elements of this index list
`void`	`truncate(int n)`	Drops everything from index n on.

Methods inherited from class java.util.ArrayList
add, add, addAll, addAll, clear, contains, ensureCapacity, equals, forEach, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeIf, removeRange, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractCollection
containsAll, toString

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection
parallelStream, stream, toArray

Methods inherited from interface java.util.List
containsAll

- Constructor Detail
  - IndexList
```
public IndexList(int initialCapacity)
```
    Unlike standard ArrayList, this fills up the list with nulls. This is because it allows the individual elements to be managed later
    
    Parameters:
    
    initialCapacity -
  - IndexList
```
public IndexList()
```
  - IndexList
```
public IndexList(QDLStem stemVariable)
```
- Method Detail
  - tail
```
public IndexList tail(int n)
```
    return the last n elements of this index list
    
    Parameters:
    
    n -
    
    Returns:
  - truncate
```
public void truncate(int n)
```
    Drops everything from index n on. New index list has n elements
    
    Parameters:
    
    n -
  - clone
```
public IndexList clone()
```
    Overrides:
    
    clone in class ArrayList
  - clone
```
public List<IndexList> clone(int n)
```
    Return n clones of this object, so if this object has m elements, this returns n*m elements.
    
    Parameters:
    
    n -
    
    Returns: