Turtle, Observer, Patch

empty? data

Parameters:
data List or string list or string to test for emptiness

Description:
If data is a list of data, reports true if data is empty.

If data is a string, reports true if data has no characters (i.e. = "").

Examples:
empty? [0 0] returns false.

empty? [] returns true.

empty? "hello" returns false.

Related Commands:
first last make-list sentence