4.2 The Predicates for Strings

For more information about general sequence and array predicates, see 6. Sequences, Arrays, and Vectors, and 6.2 Arrays.

Function: stringp object

This function returns t if object is a string, nil otherwise.

Function: char-or-string-p object

This function returns t if object is a string or a character (i.e., an integer), nil otherwise.