Alvin Alexander | Java, Scala, Unix, Perl, Mac OS X

Here’s a link to some Effective Scala slides, as presented by Mirco Dotta in 2013.

Effective Scala slides

Via a friend on Facebook:

“My advice: Don’t let yesterday contain the greatest things you’ve ever done. Make tomorrow contain your next great goal. Because once you feel your greatest days are behind you, you begin to die.”

At the very least that quote is about the importance of having goals.

“If you think you know what the state of the payments system 10 years out you're in a state of delusion.”

~ Charlie Munger talking about AMEX

I use the Java StringTemplate library in my Android applications, and Brian Clapper has created a Scala wrapper around it that he calls Scalasti. His intro: “Scalasti is a Scala interface to the StringTemplate Java template library. It provides a subset of the features of StringTemplate, using a more Scala-friendly syntax.”

“Matter is frozen energy.” ~ Einstein

Got this in an email last week, seems appropriate for today: “Marry a person you love to talk to.”

“Conscience, when it is flawless, is the voice of our soul, whispering in our ear.”

~ B.K.S. Iyengar, in the book, Light on Life: The Yoga Journey to Wholeness

If it seems like someone is winking at you, a) they might be, it’s Valentine’s week, or, b) they may have a condition known as blepharospasm, which is a symptom of MCAS. My right eye started doing this 10-15 years ago, long before I knew anything about MCAS.

(Turns out there are ~5,000 mast cells per cubic mm of conjunctival tissue, i.e., the inside of the eyelids.)

blepharospasm, or trembling of the eye

Back in the days before global warming the winters could be cold and long, and one year on February 11th I was on a yoga retreat in Mexico, which is where this picture was taken.

In the days before global warming

“The way we experience every part of our lives is affected by the qualities of our mind and by the coloring filters of our mental attitude.”

From the book, When the Chocolate Runs Out

For many years I’ve dreamt of a basement with secret walls and hidden compartments. The basement is underneath a store, and I always assumed that someone lived in the hidden compartments, but I could never find who it was that lived down there, or find all of the compartments.

With my newfound ability to stay conscious most of the night I found all of the compartments this morning, and I was stunned to learn that dozens of people lived in them. I was further surprised that I “knew” most of the people from previous dreams.

At first a few of them tried to kill me. One of them stabbed me with a syringe of some sort. That knocked me down pretty good, and under normal circumstances I might have gone back to sleep, but a few people, including an advanced yoga instructor I met several years ago, helped me recover. When everyone learned that I wouldn't/couldn’t die, they gave up.

I watched the movie Deuce Bigalow a few nights ago, and ever since then I keep hearing the song Call Me by Blondie on the radio. I think the universe may be suggesting a new career path, though I could be reading it wrong.

As a quick note, this stackexchange.com page has some good background information on how to install a deb package file from the command line on Debian Linux (which in my case is Ubuntu 16.04). The short answer is that if you have a deb file named google-chrome-stable_current_amd64.deb, you’ll want to run these two commands, one after the other, as shown:

If you need to dump the contents of an array to the Android Log (Logcat) output, I can confirm that this approach works, at least with simple arrays of integers and strings that know how to print themselves:

Log.i("MyAndroidClass", Arrays.toString(arr));

If you’re trying to print more complicated arrays of custom objects you’ll probably need to implement good toString methods on those objects, and then this technique should work.

As a quick note, if you need some examples of the syntax of how to write a Java method that returns a generic type, I hope these are helpful:

As a quick note, here’s the source code for a Java “approximately equal” function that I use in an Android application:

I went of my diet a little last night by eating some mozzarella cheese and half a beer, and this morning I woke up extremely itchy with several bumps. That’s how I roll with my version of MCAS.

“As your practice proceeds you’ll be able to remain conscious as you transition from your normal waking state into the states of sleep ... once you can remain conscious like this, you’ll no longer sleep but merely pass through the night by going into deeper states of meditation.”

To those who know me that sounds like something I might write, but those words were published by Ram Dass in 1971.

This image shows a little more of his text. I deleted a few sentences that were repetitive or used obscure words.

Ram Dass on sleep and dreaming

From a Phys.org article titled The thermodynamics of learning:

“The greatest significance of our work is that we bring the second law of thermodynamics to the analysis of neural networks,” Sebastian Goldt at the University of Stuttgart, Germany, told Phys.org. “The second law is a very powerful statement about which transformations are possible — and learning is just a transformation of a neural network at the expense of energy. This makes our results quite general and takes us one step towards understanding the ultimate limits of the efficiency of neural networks.”

The thermodynamics of learning