# StructKeyArray

Get keys of a struct as an array

## Method Signature

```
StructKeyArray(structure=[structloose])
```

### Arguments

| Argument    | Type     | Required | Description | Default |
| ----------- | -------- | -------- | ----------- | ------- |
| `structure` | `struct` | `true`   |             |         |

## Examples

### Traditional function

[Run Example](https://try.boxlang.io/?code=eJwrLkksKS12zk9JLVawVahW4OL091awUjAyMNDh4nQOcnUMcXUB8w2BfD%2F%2FkHhffxdPN0%2BwoLGBCVDQydElPsg1MNQ1OAQoZgLWCFLo5h%2Fq5wIWMeGqteYqL8osSXUpzS3QUCguKSpNLvFOrXQsKkqsBPERbtBU0LTmAgBCNyiV)

```java
statusCodes = { 
	OK : 200,
	CREATED : 201,
	NOT_MODIFIED : 304,
	BAD_REQUEST : 400,
	NOT_FOUND : 404
};
writeDump( structKeyArray( statusCodes ) );

```

Result: \[NOT\_FOUND, BAD\_REQUEST, CREATED, OK, NOT\_MODIFIED]

### Using Member Function

Retrieve a comma separated list of keys using the member function

[Run Example](https://try.boxlang.io/?code=eJwrLkksKS12zk9JLVawVahW4OL091awUjAyMNDh4nQOcnUMcXUB8w2BfD%2F%2FkHhffxdPN0%2BwoLGBCVDQydElPsg1MNQ1OAQoZgLWCFLo5h%2Fq5wIWMeGqteYqL8osSXUpzS3QUChG2KmXnVrpWFSUWKmhqaBpzQUAJU0l%2Fg%3D%3D)

```java
statusCodes = { 
	OK : 200,
	CREATED : 201,
	NOT_MODIFIED : 304,
	BAD_REQUEST : 400,
	NOT_FOUND : 404
};
writeDump( statusCodes.keyArray() );

```

Result: \[NOT\_FOUND, BAD\_REQUEST, CREATED, OK, NOT\_MODIFIED]

### Additional Examples

[Run Example](https://try.boxlang.io/?code=eJxLzMvMTcwpVrBVqFbg4nT2D1ewUlDKzc9X0uHiDPB0B%2FHyM%2FOyQVxnxxCwZGp%2BOYjr5BnkAuInZ2QWFShx1VpzpZTmFmgoBJcUlSaXeKdWOhYVJVZqKCRCbdBU0LTmAgB3qB7N)

```java
animals = { 
	COW : "moo",
	PIG : "oink",
	CAT : "meow",
	BIRD : "chirp"
};
dump( StructKeyArray( animals ) );

```

[Run Example](https://try.boxlang.io/?code=eJxLzMvMTcwpVrBViFbg4nT2D1ewUlDKzc9X0uHiDPB0B%2FHyM%2FOyQVxnxxCwZGp%2BOYjr5BnkAuInZ2QWFShxxVpzpZTmFmgoBJcUlSaXeKdWOhYVJVZqKCRCbdBU0LTmAgBmSB6N)

```java
animals = [ 
	COW : "moo",
	PIG : "oink",
	CAT : "meow",
	BIRD : "chirp"
];
dump( StructKeyArray( animals ) );

```

## Related

* [StructAppend](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structappend)
* [StructClear](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structclear)
* [StructCopy](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structcopy)
* [StructDelete](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structdelete)
* [StructEach](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structeach)
* [StructEquals](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structequals)
* [StructEvery](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structevery)
* [StructFilter](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structfilter)
* [StructFind](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structfind)
* [StructFindKey](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structfindkey)
* [StructFindValue](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structfindvalue)
* [StructGet](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structget)
* [StructGetMetadata](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structgetmetadata)
* [StructInsert](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structinsert)
* [StructIsCaseSensitive](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structiscasesensitive)
* [StructIsOrdered](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structisordered)
* [StructKeyExists](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structkeyexists)
* [StructKeyList](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structkeylist)
* [StructKeyTranslate](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structkeytranslate)
* [StructMap](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structmap)
* [StructNew](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structnew)
* [StructNone](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structnone)
* [StructReduce](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structreduce)
* [StructSome](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structsome)
* [StructSort](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structsort)
* [StructToQueryString](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structtoquerystring)
* [StructToSorted](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structtosorted)
* [StructUpdate](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structupdate)
* [StructValueArray](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/struct/structvaluearray)