What's New - December, 2007
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December 19, 2007: One more small program update before we take off for the Christmas holidays. The Binary Card Trick program posted last year has been updated to include better looking cards. The program is one of where someone thinks of a number from 0 to 15 and, as you show them a series of 4 cards, says Yes or No to indicate if their number is on that card. You lay each card in a pile as they answer, and after the 4th card, show them that their number is magically the only one displayed!
December 14, 2007: Version 3.1 of Bitmap Chunks was posted today. The program is an exercise to efficiently find connected "chunks" of a bitmap image. Today's update fixes a memory leak that occurred when multiple images were scanned within a single execution of the program. The lists of pixels belonging to each chunk were not completely released between images.
December 11, 2007: Deer hunting and playing plumber have reduced programming time this past week, but I did find time to update the age problem solver to handle today's Mensa puzzle calendar problem. Age Problem Solver V2.1 with two addition test cases makes the program just a little bit smarter.
December 3, 2007: An updated entry for the programmers today. A viewer wrote recently and pointed out that the techniques to handle international differences in decimal points should also consider thousands separator differences. US value 12,345.67 is written as 12.345,67 in most of Europe and other parts of the world. The DecimalSep2 program posted today in the Delphi_Techniques section of DFF addresses that situation.