# pdf

Hello, Scala (free preview) alvin April 9, 2019 - 9:13am

Note: The print version of Hello, Scala on Amazon will be going up to $20 (USD) this Saturday, April 13, 2019. It’s currently just$10, so you know, buy it while it’s on sale and all that. :)

If you like free things, here’s a link to a free preview (PDF) of the new version of my book, “Hello, Scala.” The book is 257 pages long, and the free preview contains the first 120 pages of it, so I hope it’s a significant preview. Hello, Scala is now available for sale, so you can buy the PDF, Kindle ebook, and/or printed book at this link.

## Hello, Scala book (an introduction to Scala book)

I’m pleased to announce that my book, Hello, Scala, is now available in three formats:

As the subtitle of the book shows, the purpose of this book is to help you learn the Scala programming language with small, easy lessons. The book consists of a little over 50 lessons, and it’s 258 pages long.

Warren Buffett’s shareholder letters alvin August 15, 2018 - 9:52am

I just learned that Warren Buffett’s shareholder letters can be found here in PDF format.

## How to control LaTeX titlepage top margin spacing

As a brief note to self, when you need to control spacing at the top of the title page (titlepage) in a LaTeX document, use the \vspace command, as shown in this example:

Great printable infographics on mast cell disease alvin June 5, 2018 - 2:36pm

If you or someone you know has a mast cell disease — a type of autoimmune disease — the tmsforacure.com website has several great infographics. I printed them out so I can take them to new doctors who don’t know me, when I have to go to emergency departments, and for things like my upcoming surgery.