X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;ds=sidebyside;f=mnemon.c;h=ac7c7652d5fd07c6c0dc8c32669eeede5a52947f;hb=cb853e60989f34c4608ac3c521bf90a01d0387d9;hp=dfcc60e78fe3a931c60f0d8b9d1a8d82ca798e0d;hpb=776dfc7b017ad307113ed9634de3adedcf61c28f;p=mnemon

diff --git a/mnemon.c b/mnemon.c
index dfcc60e..ac7c765 100644
--- a/mnemon.c
+++ b/mnemon.c
@@ -26,6 +26,7 @@
 
 #include <sys/types.h>
 #include <sys/time.h>
+#include <unistd.h>
 #include <dirent.h>
 #include <errno.h>
 #include <string.h>
@@ -730,6 +731,7 @@ mnemon_save (mnemon_t *mnemon)
 
 	category_print (category, file);
 
+	fsync (fileno (file));
 	fclose (file);
 
 	err = rename (lock_filename, filename);
@@ -863,9 +865,20 @@ mnemon_select_item (mnemon_t	 *mnemon,
     category_t *category;
 
     bin_index = rand_within_exponential (mnemon->num_bins);
-
     bin = &mnemon->bins[bin_index];
 
+    /* The most intuitive understanding of the to_introduce counter is
+     * that it's tracking never-before-learned items as they are
+     * pulled from the bin with score 0. But that bin can become
+     * empty. So the refined rule is that we decrement to_introduce
+     * whenever we pull from the lowest-indexed bin with a
+     * non-negative score. */
+    if (mnemon->to_introduce && bin->score >=0 &&
+	(bin_index == 0 || mnemon->bins[bin_index-1].score < 0))
+    {
+	mnemon->to_introduce--;
+    }
+
     item_index = rand_within (bin->num_items);
 
     item = bin->items[item_index];
@@ -1146,9 +1159,6 @@ mnemon_do_challenges (mnemon_t *mnemon)
 	mnemon_select_item (mnemon, &bin, &item_index, &category);
 	item = bin->items[item_index];
 
-	if (bin->score == 0)
-	    mnemon->to_introduce--;
-
 	while (1) {
 	    if (category->time_limit > 0.0) {
 		response = readline ("The next one is timed. Press enter when ready:");
@@ -1184,14 +1194,13 @@ mnemon_do_challenges (mnemon_t *mnemon)
     } while (mnemon->to_introduce ||
 	     mnemon->unlearned ||
 	     mnemon->to_master > 0);
-
-    printf ("Great job.\n");
 }
 
 int
 main (int argc, char *argv[])
 {
     mnemon_t mnemon;
+    char *response;
 
     srand (time (NULL));
 
@@ -1205,5 +1214,15 @@ main (int argc, char *argv[])
 
     mnemon_fini (&mnemon);
 
+    mnemon_init (&mnemon);
+    mnemon_load (&mnemon);
+
+    printf ("Great job.\nHere are your current results:\n");
+    mnemon_print_histogram (&mnemon, NULL, 0);
+    response = readline ("Press enter to quit.\n");
+    free (response);
+
+    mnemon_fini (&mnemon);
+
     return 0;
 }