Turning a URL into a QR (Quick Response) code is an illuminating exercise. Following the description of the algorithm posted by Vidurangi Kalpana, and setting aside the business of representing a boolean matrix in print or on a screen, the steps are:...
Now here’s a task that cries out for a simple solution: put a border round a matrix. My matrix is boolean and represents a QR code (yes, we’ll come to that) but it’s the same problem as, say, putting a 1px border on an image. So let’s examine it as w...
I am trying to create a continues futures contacts based on volume. But the problem I am facing is the symbols are flipping back and forth. How did you fixed the sym being flipping back and forth?posted my query on stackoverflow, but no luck with sol...
suppose i have a table t: ([]isMatched: (1b,1b,0b,0b;1b,1b,0b,0b;0b,0b,1b,1b); index:((0,1,2,3);(0,1,2,3);(0,1,2,3));id: ((`a,`b,`c,`d);(`a,`b,`c,`d);(`a,`b,`c,`d))) so each row will find use the first element in idx which the corresponding element i...
suppose i have a table with three columns first one denotes the sequence of items to pick each person allowed to pick (here only two and same seq, the front ones will have higher dollar reward) whenever available, rewards is the dollar amount corresp...
