# type

- [ArrayLen](/boxlang-language/reference/built-in-functions/type/arraylen.md)
- [GetMetaData](/boxlang-language/reference/built-in-functions/type/getmetadata.md)
- [Len](/boxlang-language/reference/built-in-functions/type/len.md)
- [NullValue](/boxlang-language/reference/built-in-functions/type/nullvalue.md)
- [StringLen](/boxlang-language/reference/built-in-functions/type/stringlen.md)
- [StructCount](/boxlang-language/reference/built-in-functions/type/structcount.md)