Writing’s been going very well this week and I have now finished the last two chapters of Object-oriented Programming in R. These chapters cover the S4 and the R6 object systems.
I have uploaded the complete (draft) manuscript to Leanpub now (you can get it for $0.99 + VAT or if you promise to give me feedback I’ll get it to you for free). I will leave it alone for a week or two now so I can read it with fresh eyes when I need to edit it (and I am sure a lot of editing is needed; I have just written it and not actually read it yet).
While this manuscript is resting I will go back to Functional Programming in R. I want to edit it after it has rested a bit and I am thinking of adding a chapter or two but I’ll have to see how that goes. Essentially, I would like to add some algorithmic stuff to it; perhaps some functional data structures and such. I’ll give it a go, at least, and see how it fits in.
If you want both Functional Programming in R and Object-oriented Programming in R really cheap, as in cheaper than the sum of the the minimal prices, you can get them bundled as Advanced Statistical Programming in R. There is only a minimal price of $1.45 (+VAT) and no suggested price, but feel free to increase the price if you want to support me writing these books. I will soon start on a third one to add to the bundle but it costs me $123.75 to put a new book on Leanpub so I would like at least one of the two books to have sold for that much before I put the next one up…
Not that I am loosing money on writing any more. The Data Science book sold enough to pay for the object-oriented programming book, and the books in total have now paid for my writing software and my Grammarly subscription as well. Still, I would like for each book to at least pay for itself. Neither the functional programming nor the object-oriented programming book has reached that point yet.
Not that they necessarily have to, it would be nice if they did but as long as the total royalties can pay for the fee for putting up new books I am okay.
In other news, I also managed to get through editing of my data science book for Apress. The title will be changed to Beginning Data Science in R and I need to come up with a sub-title. Other than that, it is now in the hands of a production editor and if all goes well it will be out around March.