;; https://github.com/phoe/quicklisp-stats
(ql:quickload :quicklisp-stats) 

(in-package :quicklisp-stats)

(defparameter *best-hundred* (subseq (month 2020 01) 0 100)
    "The 100 most downloaded libraries of January, 2020.")

(defparameter *best-hundred-names* (mapcar #'car *best-hundred*)
    "List of names (string) of the most popular libraries.")

;; For each month of 2020 (`all` is actually all of 2020), 
;; addition the number of downloads of the 100 principal libraries.
(loop for ((year month) . data) in (all)
                       do (format t ";; ~4,'0D-~2,'0D: ~D~%" year month 
                                  (loop for (name . nb) in data 
                                     when (position name *BEST-HUNDRED-NAMES* :test #'equalp)
                                     sum nb)))

#|
;; 2020-01: 620972
;; 2020-02: 525631
;; 2020-03: 643481
;; 2020-04: 571901
;; 2020-05: 539852
;; 2020-06: 515753
;; 2020-07: 538514
;; 2020-08: 418577
;; 2020-09: 500678
;; 2020-10: 533413
;; 2020-11: 436870
;; 2020-12: 402688

|#