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