From my editor Trina:

Between now and November 15th, you can enter a sweepstakes that is running on InformIT.com — 10 people who enter the sweepstakes will win a digital learning library, but every entry will earn a a one-time 40% off discount code.

And yes, you can use that discount code to purchase my Swift Developer’s Cookbook. Sounds like a good deal — and it won’t cut into my royalties as far as I can tell, so everyone wins. Here’s the direct link to the sweepstakes page.