> For the complete documentation index, see [llms.txt](https://boxlang.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraysplice.md).

# ArraySplice

Modifies an array by removing elements and adding new elements.

It starts from the index, removes as many elements as specified by elementCountForRemoval, and puts the replacements starting from index position.

## Method Signature

```
ArraySplice(array=[modifiablearray], index=[Integer], elementCountForRemoval=[Integer], replacements=[array])
```

### Arguments

| Argument                 | Type              | Required | Description                                   | Default |
| ------------------------ | ----------------- | -------- | --------------------------------------------- | ------- |
| `array`                  | `modifiablearray` | `true`   | The array to splice                           |         |
| `index`                  | `Integer`         | `true`   | The initial position to remove or insert from |         |
| `elementCountForRemoval` | `Integer`         | `false`  | The number of elemetns to remove              | `0`     |
| `replacements`           | `array`           | `false`  | An array of elements to insert                |         |

## Examples

### arraySplice inserting replacements at position 2 while removing 0 elements

[Run Example](https://try.boxlang.io/?code=eJzLzc8ryShWsFWIVuDiVPJKzFPSAdK%2BiUXJGWCWY0FRZg6Y5VWal6rEFWvNlVmSmgvSABRzS00CCyUWFSVWBhfkZCanaijkgo3UUTDSUTDQUQCr1rTmKi8CslJKcwtgCkCCAGPBI3Y%3D)

```java
months = [ 
	"Jan",
	"March",
	"April",
	"June"
];
item = [
	"Feb"
];
arraySplice( months, 2, 0, item );
writedump( months );

```

Result: \["Jan","Feb","March","April","June"]

### arraySplice inserting replacements at position 3 while removing 2 elements

[Run Example](https://try.boxlang.io/?code=eJzLzc8ryShWsFWIVuDiVPJKzFPSAdK%2BiUXJGWCWY0FRZg6Y5VWal6rEFWvNlVmSmgvSABRzS00CCyUWFSVWBhfkZCanaijkgo3UUTDWUTDSUQCr1rTmKi8CslJKcwtgCkCCAGQkI3k%3D)

```java
months = [ 
	"Jan",
	"March",
	"April",
	"June"
];
item = [
	"Feb"
];
arraySplice( months, 3, 2, item );
writedump( months );

```

Result: \["Jan","March","Feb"]

### arraySplice inserting replacements at position -3 while removing 0 elements

[Run Example](https://try.boxlang.io/?code=eJzLzc8ryShWsFWIVuDiVPJKzFPSAdK%2BiUXJGWCWY0FRZg6Y5VWal6rEFWvNlVmSmgvSABRzS00CCyUWFSVWBhfkZCanaijkgo3UUdA11lEw0FEAK9e05iovArJSSnMLYCpAggCDJyOk)

```java
months = [ 
	"Jan",
	"March",
	"April",
	"June"
];
item = [
	"Feb"
];
arraySplice( months, -3, 0, item );
writedump( months );

```

Result: \["Jan","Feb","March","April","June"]

### arraySplice inserting replacements at position 5 which is greater than the length of the array

[Run Example](https://try.boxlang.io/?code=eJzLzc8ryShWsFWIVuDiVPJKzFPSAdK%2BiUXJGWCWY0FRZg6Y5VWal6rEFWvNlVmSmgvSABRzS00CCyUWFSVWBhfkZCanaijkgo3UUTDVUTDQUQCr1rTmKi8CslJKcwtgCkCCAGQqI3k%3D)

```java
months = [ 
	"Jan",
	"March",
	"April",
	"June"
];
item = [
	"Feb"
];
arraySplice( months, 5, 0, item );
writedump( months );

```

Result: \["Jan","March","April","June","Feb"]

### Splice an array using member function

[Run Example](https://try.boxlang.io/?code=eJzLzc8ryShWsFWIVuDiVPJKzFPSAdK%2BiUXJGWCWY0FRZg6Y5VWal6rEFWvNlVmSmgvSABRzS00CC%2BWCTdErLsjJTE7VUDDSUTDQUQCr07TmKi8CslJKcws0FCDqQIIAiRAhWQ%3D%3D)

```java
months = [ 
	"Jan",
	"March",
	"April",
	"June"
];
item = [
	"Feb"
];
months.splice( 2, 0, item );
writedump( months );

```

Result: \["Jan","Feb","March","April","June"]

### Additional Examples

[Run Example](https://try.boxlang.io/?code=eJxzSawsVrBViFbg4lQKLs1T0gHSvvkQOjw1BUyHZJQWFYNZbkWZYDo4sUSJK9aaK7MkNRekG6SoNLUYLOZYVJRYGVyQk5mcqqHgAjReR8FYR8FARwGsWNOaq7wIyEopzS2ASIOEALc4Iyo%3D)

```java
Days = [ 
	"Sun",
	"Mon",
	"Wed",
	"Thurs",
	"Fri",
	"Sat"
];
item = [
	"Tues"
];
ArraySplice( Days, 3, 0, item );
writedump( Days );

```

## 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)
* [ArrayPush](/boxlang-language/reference/built-in-functions/array/arraypush.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)
* [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)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/array/arraysplice.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.