(->>
(string/split " " "this is an example yes, an example")
(filter (complement empty?))
(frequencies))
# -> @{"is" 1 "example" 2 "yes," 1 "an" 2 "this" 1}
# same as:
(frequencies
(filter
(complement empty?)
(string/split " " "this is an example yes, an example")))