# decision

- [ArrayIsEmpty](/boxlang-language/reference/built-in-functions/decision/arrayisempty.md)
- [ArrayIsEmpty](/boxlang-language/reference/built-in-functions/decision/arrayisempty-1.md)
- [Attempt](/boxlang-language/reference/built-in-functions/decision/attempt.md)
- [IsArray](/boxlang-language/reference/built-in-functions/decision/isarray.md)
- [IsBinary](/boxlang-language/reference/built-in-functions/decision/isbinary.md)
- [IsBoolean](/boxlang-language/reference/built-in-functions/decision/isboolean.md)
- [IsClosure](/boxlang-language/reference/built-in-functions/decision/isclosure.md)
- [IsCustomFunction](/boxlang-language/reference/built-in-functions/decision/iscustomfunction.md)
- [IsDate](/boxlang-language/reference/built-in-functions/decision/isdate.md)
- [IsDateObject](/boxlang-language/reference/built-in-functions/decision/isdateobject.md)
- [IsDebugMode](/boxlang-language/reference/built-in-functions/decision/isdebugmode.md)
- [IsDefined](/boxlang-language/reference/built-in-functions/decision/isdefined.md)
- [IsEmpty](/boxlang-language/reference/built-in-functions/decision/isempty.md)
- [IsFileObject](/boxlang-language/reference/built-in-functions/decision/isfileobject.md)
- [IsIPv6](/boxlang-language/reference/built-in-functions/decision/isipv6.md)
- [IsJSON](/boxlang-language/reference/built-in-functions/decision/isjson.md)
- [IsLeapYear](/boxlang-language/reference/built-in-functions/decision/isleapyear.md)
- [IsLocalHost](/boxlang-language/reference/built-in-functions/decision/islocalhost.md)
- [IsNull](/boxlang-language/reference/built-in-functions/decision/isnull.md)
- [IsNumeric](/boxlang-language/reference/built-in-functions/decision/isnumeric.md)
- [IsNumericDate](/boxlang-language/reference/built-in-functions/decision/isnumericdate.md)
- [IsObject](/boxlang-language/reference/built-in-functions/decision/isobject.md)
- [IsQuery](/boxlang-language/reference/built-in-functions/decision/isquery.md)
- [IsSimpleValue](/boxlang-language/reference/built-in-functions/decision/issimplevalue.md)
- [IsStruct](/boxlang-language/reference/built-in-functions/decision/isstruct.md)
- [IsValid](/boxlang-language/reference/built-in-functions/decision/isvalid.md)
- [IsXML](/boxlang-language/reference/built-in-functions/decision/isxml.md)
- [IsXmlAttribute](/boxlang-language/reference/built-in-functions/decision/isxmlattribute.md)
- [IsXMLDoc](/boxlang-language/reference/built-in-functions/decision/isxmldoc.md)
- [IsXMLElem](/boxlang-language/reference/built-in-functions/decision/isxmlelem.md)
- [IsXMLNode](/boxlang-language/reference/built-in-functions/decision/isxmlnode.md)
- [IsXMLRoot](/boxlang-language/reference/built-in-functions/decision/isxmlroot.md)
- [LSIsNumeric](/boxlang-language/reference/built-in-functions/decision/lsisnumeric.md)
- [structIsEmpty](/boxlang-language/reference/built-in-functions/decision/structisempty.md)