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


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