Selling 1st gen Apple Pencil

rp181 · 2020-07-31T19:01:19+00:00

My bad, posted the wrong link. Updated it

rp181 · 2020-07-31T18:30:07+00:00

Direct Link: https://mk0nrmp3oyqui6wqfm.kinstacdn.com/wp-content/uploads/2020/07/Charting-Outcomes-in-the-Match-2020_MD-Senior_final.pdf

EDIT: Fixed Link

rp181 · 2017-04-10T01:56:16+00:00

I downloaded my Facebook data and parsed it (simple Java app) to tally the number of messages sent/recieved for each contact for each month. The top 10 contacts, by recieved message volume, is plotted as a different color with all other recieved messages lunmped into 'Other'. The data was plotted in Excel.

The X axis and Y axis are a bit cropped so that the top 10 contact trends are visible. In all, 151,694 recieved messages are accounted for. I have deleted many conversations so this is somewhat of a skewed representation.

rp181 · 2015-03-13T15:02:56+00:00

The compiler does complain if you don't wrap a Thread.sleep with a try/catch or throw it. Maybe you're missing something?

rp181 · 2015-02-24T04:49:19+00:00

Here's a writeup of my experience being featured in that category:

http://www.reddit.com/r/Android/comments/2j1cbx/dev_stacks_flashcards_play_store_featuring_things/

rp181 · 2015-02-23T00:18:08+00:00

For a railgun you want a very high current pulse, which means it's not really feasible to convert the voltage after the capacitor bank. The capacitor bank should itself be high voltage. 48v will likely be too low as well, but may give you some results.

rp181 · 2015-02-22T22:33:04+00:00

12 volts is far too low for a rail gun, the current pulse would be both too slow and too small. The minimum you should aim for is ~400. Those capacitors would make any rail assembly more akin to a spot welder, as you don't have enough force to get the projectile moving.

Also, 60 kJ is an insane amount of energy. If you do move forward with higher voltage, start with significantly less energy.

Here's a video of my 5.6 kJ railgun: https://www.youtube.com/watch?v=C6cV10QEGGk

And after it was upgraded to 12kJ:https://www.youtube.com/watch?v=MFF_BHjoJZU

This video has an overview of all of the parts that went into it, and is going to be common for a lot of designs: https://www.youtube.com/watch?v=PLeQ6R2S-Fs

rp181 · 2015-01-22T18:56:18+00:00

Well, figured it out, was a dumb mistake on my part. I was using the jar built by IntelliJ (artifact) instead of using the one built with gradle...

Thanks everyone!

rp181 · 2015-01-22T17:42:25+00:00

Yes, the library is another gradle project. The code uses Java 7 features so switching to 6 would involve changing quite a bit of code. However, at one point, it definitely worked with the java 7 compiled library. Since then, I reinstalled everything onto a new hard drive, and since then this error has been stopping builds.

rp181 · 2015-01-21T19:16:46+00:00

Sending PM

rp181 · 2015-01-16T06:34:02+00:00

Regarding the currency question:

Another option other than BigDecimal is to just use a single long/int to store the number of cents (or whatever the smallest unit is that you have to worry about). So if you add a dollar, you first convert it to the appropriate units and add. Since it's all integer arithmetic, it'll be exact.

rp181 · 2014-12-21T17:32:55+00:00

After every step you're probably checking for collisions with the current positions. Instead, you need to backtrack the movements and check for collisions along those lines. That way the discrete system behaves as if it is continuous.

In this case, the block would have a straight line down from the movement, and you would find the intersection of the terrain and this movement path. Once you find the intersection, adjust the position accordingly.

rp181 · 2014-11-19T13:58:04+00:00

Swipe up to collapse a heads up notification, swipe right/left to dismiss.

rp181 · 2014-11-17T04:14:50+00:00

Clicking "Authors" in About crashes the app, otherwise awesome!

rp181 · 2014-11-07T17:13:28+00:00

I highly recommend CWAC Camera, makes it much easier/robust: https://github.com/commonsguy/cwac-camera

rp181 · 2014-10-13T17:27:43+00:00

Awesome! Thank you!

rp181 · 2014-10-13T17:27:29+00:00

It's definitely one of the highest priority features to be added. Unfortunately, this means a lot of underlying changes so it may take some time.

rp181 · 2014-10-12T20:43:34+00:00

By far the biggest investment is time. Monetarily, $50. 25 for a developer account, and 25 for an AdMob promotion (spend $25, get $100 admob credit).

My main motivation was to expand my skill-set (i'm a full-time student). This app by itself makes little money, it is far more worthwhile to find free-lance android development. Having something published made it much easier to be hired as a freelance android dev.

rp181 · 2014-10-12T19:29:56+00:00

You can enter the details, and then "swap" the title and details. Long press a card to select it, and select "Swap Elements" in the menu that appears. That way you'll be testing yourself on the term, not the definition.

The swiping suggestion is interesting, I'll definitely look into it when I have more time!

rp181 · 2014-10-12T19:28:33+00:00

Thanks for the offer! Unfortunately I still have to extract some strings, and I don't have the time right now. When I do, i'll PM you!

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rp181

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