# IsArray

Determine whether a value is an array

## Method Signature

```
IsArray(value=[any], number=[numeric])
```

### Arguments

| Argument | Type      | Required | Description                             | Default |
| -------- | --------- | -------- | --------------------------------------- | ------- |
| `value`  | `any`     | `true`   | The value to test for array-ness.       |         |
| `number` | `numeric` | `false`  | If passed, the array dimension to test. |         |

## Examples

### simple isArray example

[Run Example](https://try.boxlang.io/?code=eJxLzs%2FJL3IsKkqsVLBViFbg4lSqTM3JyS9X0gEy04tSU%2FPArKLUFCWuWGuu8qLMklT%2F0pKC0hINhcxisEYNhWSEIZoKmtZcAGG2GiQ%3D)

```java
colorArray = [ 
	"yellow",
	"green",
	"red"
];
writeOutput( isArray( colorArray ) );

```

Result: yes

### simple isArray example

[Run Example](https://try.boxlang.io/?code=eJxLzs%2FJL3IsKkqsVLBViFbg4lSqTM3JyS9X0gEy04tSU%2FPArKLUFCWuWGuu8qLMklT%2F0pKC0hINhcxisEYNhWSEIZoKmtZcAGG2GiQ%3D)

```java
colorArray = [ 
	"yellow",
	"green",
	"red"
];
writeOutput( isArray( colorArray ) );

```

Result: true

### isArray example with number

[Run Example](https://try.boxlang.io/?code=eJzLK81NSi1yLCpKrFSwVYhW4OI01OHiNAJiY65Ya67yosySVP%2FSkoLSEg2FzGKwOg2FPIQmHQVDBU0FTWsuABqtFVc%3D)

```java
numberArray = [ 
	1,
	2,
	3
];
writeOutput( isArray( numberArray, 1 ) );

```

Result: yes

### isArray example with number

[Run Example](https://try.boxlang.io/?code=eJzLK81NSi1yLCpKrFSwVYhW4OI01OHiNAJiY65Ya67yosySVP%2FSkoLSEg2FzGKwOg2FPIQmHQVDBU0FTWsuABqtFVc%3D)

```java
numberArray = [ 
	1,
	2,
	3
];
writeOutput( isArray( numberArray, 1 ) );

```

Result: true

### Additional Examples

[Run Example](https://try.boxlang.io/?code=eJwrL8osSXUpzS3QUMhJTErNsVVyzS0oqVRwLCpKrFTSUShLLLLNLAbzNBSiYxU0FTStucoxNIEV%2BKWWo%2BtIhIprKBiCtOLXrFCQX5xZkpmfZ4zbGGMFTR0Qgd0kp%2Fz8nNTEPKDmnNJUdENKikpTcWkMLinKzEvHrk8JbLsSRCsAyt1jGg%3D%3D)

```java
writeDump( label="Empty Array", var=isArray( [] ) );
writeDump( label="ArrayNew", var=isArray( arrayNew( 1 ) ) );
writeDump( label="ArrayNew position3", var=isArray( arrayNew( 3 ), 3 ) );
writeDump( label="Boolean value", var=isArray( true ) );
writeDump( label="String value", var=isArray( "array" ) );

```

## Related

* [ArrayIsEmpty](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/arrayisempty)
* [arrayIsEmpty](https://github.com/ortus-boxlang/boxlang-docs/blob/v1.x/boxlang-language/reference/built-in-functions/decision/arrayIsEmpty.md)
* [Attempt](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/attempt)
* [IsBinary](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isbinary)
* [IsBoolean](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isboolean)
* [IsClosure](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isclosure)
* [IsCustomFunction](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/iscustomfunction)
* [IsDate](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isdate)
* [IsDateObject](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isdateobject)
* [IsDebugMode](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isdebugmode)
* [IsDefined](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isdefined)
* [IsEmpty](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isempty)
* [IsFileObject](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isfileobject)
* [IsIPv6](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isipv6)
* [IsJSON](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isjson)
* [IsLeapYear](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isleapyear)
* [IsLocalHost](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/islocalhost)
* [IsNull](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isnull)
* [IsNumeric](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isnumeric)
* [IsNumericDate](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isnumericdate)
* [IsObject](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isobject)
* [IsQuery](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isquery)
* [IsSimpleValue](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/issimplevalue)
* [IsStruct](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isstruct)
* [IsValid](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isvalid)
* [IsXML](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isxml)
* [IsXmlAttribute](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isxmlattribute)
* [IsXMLDoc](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isxmldoc)
* [IsXMLElem](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isxmlelem)
* [IsXMLNode](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isxmlnode)
* [IsXMLRoot](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isxmlroot)
* [LSIsNumeric](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/lsisnumeric)
* [structIsEmpty](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/structisempty)


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