X-Git-Url: https://git.xandkar.net/?a=blobdiff_plain;f=tt.rkt;h=409ef51296b8e88fc1d997924179e6d6ab66b934;hb=6df41218feef6f9a5fb726a49abfbdf4f80b5030;hp=c606b2e3a803bd3b018d556ddbf2c585f29a7480;hpb=78398948dd83a319ed91a2fa8d843fbf30af39bc;p=tt.git

diff --git a/tt.rkt b/tt.rkt
index c606b2e..409ef51 100644
--- a/tt.rkt
+++ b/tt.rkt
@@ -34,6 +34,9 @@
 ; - d | download
 ; - u | upload
 ;   - calls user-configured command to upload user's own feed file to their server
+;
+; Looks like a better CLI parser than "racket/cmdline":
+; https://docs.racket-lang.org/natural-cli/
 
 #lang racket
 
@@ -50,6 +53,7 @@
 (struct feed (nick uri))
 
 (define (concurrent-filter-map num_workers f xs)
+  ; TODO preserve order of elements OR communicate that reorder is expected
   ; TODO switch from mailboxes to channels
   (define (make-worker id f)
     (define parent (current-thread))
@@ -83,6 +87,15 @@
   (for-each thread-wait threads)
   results)
 
+(module+ test
+  (define n-workers 10)
+  (define given (list
+                  (λ (x) (if (even? x) x #f))
+                  (range 11)))
+  (check-equal?
+    (sort (apply concurrent-filter-map (cons n-workers given)) <)
+    (sort (apply            filter-map                 given ) <)))
+
 (define (msg-print out-format odd msg)
   (printf
     (match out-format