## Function: SB-IMPL::EMPTYP [![package](https://img.shields.io/badge/Package-SB--IMPL-5f9ea0.svg?style=social&colorA=999999)](../) [![type](https://img.shields.io/badge/Type-Function-5f9ea0.svg?style=social&colorA=999999)](../#function) [![github](https://img.shields.io/badge/GitHub-View_the_source-5f9ea0.svg?style=social&colorA=999999&logo=github)](https://github.com/sbcl/sbcl/blob/master/src/code/seq.lisp/) > Returns T if SEQUENCE is an empty sequence and NIL > otherwise. Signals an error if SEQUENCE is not a sequence. ### Lambda list ```cl (sequence) ```