If you'll pardon my bragging a bit, Effective Modern C++ has recently nudged David Pogue's OS X Yosemite: The Missing Manual aside to retake the #1 position on O'Reilly's bestseller list. As such, it qualifies for O'Reilly's "Best of January" promotion, whereby they offer a discount code good for 50% off their 10 best-selling videos and 10 best-selling ebooks. The discount code in question is DEAL.
Despite the "One Day Only" bannerette on the promotion page, the discount runs through the weekend. Hey, one day, three days--who cares if you get 50% off?