# Interface: `ConcatArray`






## Properties

|Property | Description | Type | Optional|
|--- | --- | --- | ---|
|length |  | Number | |

## Methods

|Method | Parameters | Description | ReturnType | Optional|
|--- | --- | --- | --- | ---|
|join | **`separator`**: *(Optional)*  String  |  | String | |
|slice | **`start`**: *(Optional)*  Number <br>**`end`**: *(Optional)*  Number  |  | Array\<T\> | |