This Week I Learned - 2017 Week 08

Last week post or the whole series.

Interesting week where your body is giving up on you. Not only adequate and timely sleep is important, it's also crucial for you to keep alert, especially when riding a bike.

#1 Git merge vs. rebase. While I'm almost doing it on daily basis, yet I can can learn a few tricks from time to time. First, is to rebase local commits before commit. One of the mistake I did with another teammate while working on a topic branch is that we `git pull` instead of `git pull --rebase` before committing to the topic branch. Alternatively, we can rebase from remote topic branch before committing. Second, is that I always rebase from `master` branch but always have to resolve a lot of merge conflicts. Instead of rebasing, maybe I should merge instead?
$ git checkout branchX
$ git merge master
$ git rebase -i @{u} # @{u} stands for upstream
$ git push origin branchX

#2 Laura Vanderkam on gaining control of your free time. The key to time management is to focus on the priority. If you don't have time for something, then something is not a priority. If someone willing to pay you 100k for that task, then you will find time to do that task! In short, lacking time is not the actual reason, but you just don't want to do it. You are procrastinating.


How to find those priority items? Start with the end in mind. List down 3 to 5 items. Imagine writing your own performance review for next year for either personal or professional. Foresee what great things you're expecting. Now you've a list of items, how do you manage it?

Friday afternoon (is a low opportunity cost, you don't have to give up a lot). Make three categories, career, relationship, and self. Put two or three items into the three categories and plan these items for the next week. Normally, things aren't always proceed with what we planned.

168 hours. This is equivalent to 24 hours times 7 days. Typical breakdown of the hours spent per week for me are:
  • Work plus travel : 10 hours / day, 50 hours / week
  • Sleep: 8 hours / day, 56 hours / week
  • Total hours left: 168 - 106 = 62 hours / week, 8.8 hours / day
62 hours?! What was I doing all these years?

Having awareness is a key step for moving forward. The question right now is what can you do with those 62 hours? Schedule your items according to these 62 hours. Develop a system accordingly. Easy right? No, we're not busy, Sometimes, we're just plain lazy.

#3 Browsing through MSP430 Q&A in StackExchange's Electronic Engineering forum. Some interesting selected questions.
#4 ARM Cortex-M4. Another interesting microcontrollers which support 32-bit processing capability and quite a few number of brands to choose from. TI MSP432 LaunchPad and STM32 F4 Discovery Kit caught my attention. I prefer the later due to the embedded 2.4" QVGA TFT LCD screen. Will proceed with this microcontrollers once I've done enough with my MSP430.

#5 Dual in-line package (DIP) is one of the packaging types of integrated circuit. When switching different processor from the microcontrollers board, you will need a DIP extraction tool, the professional one. Due to budget constraint, I bought the cheapest I can find, roughly around MYR7.

#6 Buying a TV? The Cnet TV buying guide is best I've read so far. I was surprised to learn some of my generalizations regarding TV were far off. In short, at least 40 inches LED LCD TV with local dimming, full-array LED backlights, and dumb TV. Unfortunately, the recommended brand, TCL is not available in MY. Something interesting and coincident. While going through my photos, I've noticed I've took the same TV model at the same day at two different years. Maybe it's a sign for me to get that TV instead?

This Week I Learned - 2017 Week 07

Last week post or the whole series.

When come to getting new stuff, I really should have a one-item policy. For example, if I'm going to get a new bag, either I sell off the existing bag or donate it out. Otherwise, no point having two bags where you only going to use one. Not only is wasteful, it's also a hassle to store it and clean it as well. Something for me ponder upon when I'm thinking of getting any new stuff.

#1 Six modern keys to wealth. HN user, monodeldiablo describes six possible ways for anyone to accumulate wealth. In essence, you should be competent (both book smart and street smart), persistent (perseverance), and extraordinary lucky (right place, right time, and right people).

Developers are generally book smart but always having difficulties to monetize their projects or technical ability (turn it into a business). The most recent example is JWE, the author and maintainer for GNU Octave is looking for job after 25 years of maintaining the software (I think he is doing a great job since he have been doing it for 25 years but having some financial difficulties these few years). I've made a small contribution to him and being a FSF associate member can help too (just make a note in your monthly contribution). Expect some blog posts on GNU Octave in coming future.

#2 Coroutines in Perl? Use Coro module. More on asynchronous programming in Perl in coming posts. Busy week and I can't seem to allocate any time to look into this. So many things to follow up and so little time.

#3 Prioritize! Prioritize! This reminds me of Stephen Covey's four quadrants approach (similar to The Eisenhower Method) of prioritizing to-do list and time management.

#4 theXeffect subreddit. Fundamental approach to build habits and prevent procrastination. Also known as the "Seinfeld Strategy". Following Bombjoke advice, the steps as follow.
  • Buy a pack of index card. Get the one from Daiso with 5mm grid.
  • Start with BolĂ©ro by Maurice Ravel as your background music.
  • Pick a daily habit you want to develop. May I recommend meditation?
  • Write the reasons on why you want to develop the habit on the back of the card.
  • Start now. Do the habit. Once done, mark a big 'X' on the box. If you fail, mark a big 'O'.
  • Continue for 66 days or 2 months. A habit is formed after that period.
The index card by hardcase00 shown below is a good example to illustrate the steps mentioned. Look closely at the card. In order to continue the streak, he have different minimum meditation time ranging from 5 seconds till 15 minutes. Set your goal so low and easy that you don't have any excuses of not doing it. Remember the main purpose is not to focus on how long you can meditate but to develop a habit of daily meditation.



#5 Software developers who started after 35. I have mixed feeling about this. Is good that anyone who are diligent enough can pick up software development skill but Peter Norvig's post on teaching yourself programming in ten years reminded me otherwise. Well, it depends on how you see software development itself. Is it a tool for your to achieve your goal? Or a skill you wish to gain and master? Different people have different motivations.

#6 Is PostgreSQL good enough? (via HN) By far, best written technical post I've read this year. Sad about the font size though. Seriously, who read at such small font size? I've seen quite a few systems which can benefit greatly if they switch to PostgreSQL instead of MySQL. MySQL, being popular and easy to learn doesn't means that it's suitable for all scenarios.There are other requirements where PostgreSQL fits, for example, PostGIS. For a comparison between two to programming languages, MySQL is like dynamic-typed programming language and PostgreSQL is like static-typed programming language. If I'm going to develop any intranet web application which involves critical financial information, my first choice is definitely PostgreSQL.

#7 Goals are for Losers. Passion is Overrated. Provocative opinion but make sense. You need to implement a system or habit to achieve what you want in life. Not passions or goals. Example from the slide is losing 10kg is a goal but eating the right way is a system. To increase the success of what you want in life, use a system approach to acquire more skills which can increase your odd. Summary of this appraoch. Item #4 is also another good example of systematic approach increasing the success rate of what you want to achieve in life.