# GetBuiltInFunction()

Returns a built-in function as an object, matching the given name, throws an exception when the function does not exist.

```
GetBuiltInFunction( name=string );
```

**Returns:** any

# Arguments

| Argument | Type | Required | Description | Default |
|----------|------|----------|-------------|---------|
| name | string | Yes | name of the build in function, for example "StructKeyExists" |  |

# Examples

```cfml
	dump(getBuiltinFunction('isArray'));
```







# Categories

[Lucee Server related Tags, Functions and Guides](../../categories/server.md)

# See Also

[GetFunctionCalledName()](getfunctioncalledname.md), [GetFunctionData()](getfunctiondata.md), [GetFunctionKeywords()](getfunctionkeywords.md), [GetFunctionList()](getfunctionlist.md), [GetTagData()](gettagdata.md), [GetTagList()](gettaglist.md)