# ArrayPush

Adds an element or an object to the end of an array, then returns the size of the modified array.

## Method Signature

```
ArrayPush(array=[modifiableArray], value=[any])
```

### Arguments

| Argument | Type              | Required | Description                                        | Default |
| -------- | ----------------- | -------- | -------------------------------------------------- | ------- |
| `array`  | `modifiableArray` | `true`   | The array to which the element should be appended. |         |
| `value`  | `any`             | `true`   | The element to append. Can be any type.            |         |

## Examples

### Push a value onto an array

This is the full function version of arrayPush to push a value onto the end of the array.

[Run Example](https://try.boxlang.io/?code=eJxLLCpSsFWIVuDiNNTh4jQCYmOuWGuuxKKixMqA0uIMDQUw0xZI6iiUJeaUptqaGCloWnOVF2WWpPqXlhSUlmgoKIVkZBZDVCpkJBYrKCmoQXg%2BqXlgExQ0gSJKCqk5qbmpeSXFekogIwCmqCRL)

```java
arr = [ 
	1,
	2,
	3
];
arrayPush( array=arr, value=42 );
writeOutput( "This array has " & arrayLen( arr ) & " elements." );

```

Result: This array has 4 elements.

### Member function version.

Using the member function. This version also works in ACF2018.

[Run Example](https://try.boxlang.io/?code=eJxLLCpSsFWIVuDiNNTh4jQCYmOuWGuuxBygaGJRkV5BaXGGhoKJkYKmNVd5UWZJqn9pSUFpiYaCUkhGZjFISWKlQkZisYKSgpoCUJcakJGak5qbmldSrKcE0gUA358aew%3D%3D)

```java
arr = [ 
	1,
	2,
	3
];
al = arr.push( 42 );
writeOutput( "This array has " & al & " elements." );

```

Result: This array has 4 elements.

### Push an object onto an array.

This demonstrates pushing an object onto an array.

[Run Example](https://try.boxlang.io/?code=eJxLLCpSsFWIVuDijObi5DTk4ozVgTCVSsrzlRDcaiDmdFSwUjAGMmqB4lyx1lyJOUC9iUVFegWlxRkaCkB1JkZcsQqa1lzlRZklqf6lJQWlJRoKSiEZmcUgdYmVChmJxQpKCmoKQK1qQEZqTmpual5JsZ4SSBcAPPchZQ%3D%3D)

```java
arr = [ 
	[
		1
	],
	[
		"two"
	],
	[
		{
			A : 3
		}
	]
];
al = arr.push( [
	42
] );
writeOutput( "This array has " & al & " elements." );

```

Result: This array has 4 elements.

### Additional Examples

[Run Example](https://try.boxlang.io/?code=eJzLK81NSi0qVrBViFbg4jTU4eI0AmJjIDbhirXmcinNLdBQcCwqSqwMKC3O0FDIg6jXUTBQ0FTQtFbQ11fwLy0pKC0pVjDlys0vSvVDGMjFaQo0xwyIzYHYAqt5SFp0FEzAZnKhGgoAoF8rrw%3D%3D)

```java
numbers = [ 
	1,
	2,
	3,
	4
];
Dump( ArrayPush( numbers, 0 ) ); // Outputs 5
moreNumbers = [
	5,
	6,
	7,
	8
];
Dump( ArrayPush( moreNumbers, 4 ) );
 // Outputs 5

```

## Related

* [ArrayAppend](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayappend)
* [ArrayAvg](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayavg)
* [ArrayChunk](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraychunk)
* [ArrayClear](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayclear)
* [ArrayContains](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraycontains)
* [ArrayContainsNoCase](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraycontainsnocase)
* [ArrayDelete](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraydelete)
* [ArrayDeleteAt](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraydeleteat)
* [ArrayDeleteNoCase](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraydeletenocase)
* [ArrayEach](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayeach)
* [ArrayEvery](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayevery)
* [ArrayFilter](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayfilter)
* [ArrayFind](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayfind)
* [ArrayFindAll](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayfindall)
* [ArrayFindAllNoCase](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayfindallnocase)
* [ArrayFindFirst](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayfindfirst)
* [ArrayFindNoCase](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayfindnocase)
* [ArrayFirst](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayfirst)
* [ArrayFlatMap](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayflatmap)
* [ArrayFlatten](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayflatten)
* [ArrayGetMetadata](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraygetmetadata)
* [ArrayGroupBy](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraygroupby)
* [ArrayIndexExists](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayindexexists)
* [ArrayInsertAt](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayinsertat)
* [ArrayIsDefined](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayisdefined)
* [ArrayLast](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraylast)
* [ArrayMap](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraymap)
* [ArrayMax](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraymax)
* [ArrayMedian](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraymedian)
* [ArrayMerge](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraymerge)
* [ArrayMid](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraymid)
* [ArrayMin](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraymin)
* [ArrayNew](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraynew)
* [ArrayNone](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraynone)
* [ArrayPop](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraypop)
* [ArrayPrepend](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayprepend)
* [ArrayRange](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayrange)
* [ArrayReduce](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayreduce)
* [ArrayReduceRight](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayreduceright)
* [ArrayReject](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayreject)
* [ArrayResize](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayresize)
* [ArrayReverse](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayreverse)
* [ArraySet](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayset)
* [ArrayShift](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayshift)
* [ArraySlice](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayslice)
* [ArraySome](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraysome)
* [ArraySort](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraysort)
* [ArraySplice](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraysplice)
* [ArraySum](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraysum)
* [ArraySwap](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayswap)
* [ArrayToList](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraytolist)
* [ArrayToStruct](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraytostruct)
* [ArrayTranspose](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraytranspose)
* [ArrayUnique](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayunique)
* [ArrayUnshift](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayunshift)
* [ArrayZip](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arrayzip)