# struct.keyList()

Extracts keys from a struct.

```
struct.keyList( delimiter=string )
```

**Returns:** string

# Arguments

| Argument | Type | Required | Description | Default |
|----------|------|----------|-------------|---------|
| delimiter | string | No | Character that separates keys in list. Default: comma. *Alias: delimiters* |  |

# Examples

```cfml
	animals = {
		cow: "moo",
		pig: "oink",
		cat: "meow",
		bird: "chirp"
	};
	// StructKeyList(animals)
	animalList = animals.KeyList();
	echo(animalList);
```

# Categories

[Structures](../../../categories/struct.md)

# See Also

[StructKeyList()](../../functions/structkeylist.md), [Struct](../struct.md)