• Intro

Intro

This library provides a language for expressing data manipulations as the composition of more primitive operations.

  DATA-LENS> (funcall (on (compress-runs :collector 'combine-matching-lists)
                          (alexandria:compose 
                           (over (juxt (element 0)
                                       'identity))
                           (sorted 'string<)))
                      '("January"   "February" "March"    "April"
                        "May"       "June"     "July"     "August"
                        "September" "October"  "November" "December"))
  #| ==> ((#\A "April" "August") 
          (#\D "December")
          (#\F "February")
          (#\J "January" "July" "June")
          (#\M "March" "May")
          (#\N "November")
          (#\O "October")
          (#\S "September")) |#