SizableIterable (Apache TinkerPop 3.6.2 API)

java.lang.Object
- org.apache.tinkerpop.gremlin.algorithm.generator.SizableIterable<T>

All Implemented Interfaces:

Iterable<T>
```
public class SizableIterable<T>
extends Object
implements Iterable<T>
```
Utility class to make size determinations for Iterable for efficient.
If the number of elements in an Iterable is known, then the Iterable can be wrapped in this class to make determining the size a constant time operation rather than an iteration over the whole Iterable.
Some generators need to know the number of vertices prior to generation. Using this class can speed up the generator.

Author:

Matthias Broecheler (me@matthiasb.com)

Constructor Summary

Constructors
Constructor Description

SizableIterable(Iterable<T> iterable, int size)
Wraps the given Iterable with the given size.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Iterator<T>`	`iterator()`
`int`	`size()`	Returns the size of the Iterable
`static <T> int`	`sizeOf(Iterable<T> iterable)`	Utility method to determine the number of elements in an Iterable.

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

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Constructor Detail
  - SizableIterable
```
public SizableIterable(Iterable<T> iterable,
                       int size)
```
    Wraps the given Iterable with the given size.
    NOTE: the size MUST be the size of the Iterable. This is not verified.
- Method Detail
  - size
```
public int size()
```
    Returns the size of the Iterable
    
    Returns:
    
    Size of the Iterable
  - iterator
```
public Iterator<T> iterator()
```
    Specified by:
    
    iterator in interface Iterable<T>
  - sizeOf
```
public static <T> int sizeOf(Iterable<T> iterable)
```
    Utility method to determine the number of elements in an Iterable.
    Checks if the given Iterable is an instance of a Collection or SizableIterable before iterating to improve performance.
    
    Returns:
    
    The size of the given Iterable.