Hacker News: 00098345

New comment by 00098345 in "Hello, I’m Mr. Null. My Name Makes Me Invisible to Computers"

00098345 — Mon, 05 Sep 2016 00:21:47 +0000

SQL summation without coalescing null addenda to zero. The sum result was a null. This had been going on for years. Oops!

The lesson/mitigation was to add a NOT NULL attribute on top of a DEFAULT 0.

New comment by 00098345 in "Hello, I’m Mr. Null. My Name Makes Me Invisible to Computers"

00098345 — Sun, 04 Sep 2016 23:47:09 +0000

I have to disagree with Hoare sensei there. The number is nowhere near a billion. I personally know of one case that totaled to a billion.

New comment by 00098345 in "When to Avoid JSONB in a PostgreSQL Schema"

00098345 — Fri, 02 Sep 2016 01:03:56 +0000

This is good but please, to preserve your own sanity, first design the table struct properly to capture all attributes you can think of in separate columns and add the appropriate primary key. Then add the extra JSON(B) column for unforeseen data. Keep iterating till the table is still small.

New comment by 00098345 in "How Mathematicians Cut Cake"

00098345 — Wed, 31 Aug 2016 01:06:51 +0000

Another interesting piece: equal pizza slices.

http://www.popsci.com/cut-better-slice-pizza-with-math

http://arxiv.org/pdf/1512.03794v1.pdf

New comment by 00098345 in "Everyone is quitting"

00098345 — Wed, 10 Aug 2016 14:07:59 +0000

Operation success; patient died.

New comment by 00098345 in "“I Want to Know What Code Is Running Inside My Body”"

00098345 — Tue, 09 Aug 2016 05:31:29 +0000

Not necessary because this is realised to a certain extent through safety standards. Certified earthquake proof. Done.

Now, in this case, FDA approval should include software standards that prevent this scenario. Done*.

New comment by 00098345 in "Moving 12 years of email from GMail to FastMail"

00098345 — Mon, 08 Aug 2016 22:50:59 +0000

The founder, Sridhar, is on here: https://news.ycombinator.com/user?id=sridharvembu

Very talented and humble guy.

New comment by 00098345 in "The Melancholy of Infinite Space (1996)"

00098345 — Sat, 30 Jul 2016 01:57:01 +0000

It is interesting that Mr. Landis mentions entropy (in Thermodynamical sense I hope). I have always wondered what it means here, in this solar system. Assuming the solar system has negligible energy flowing in, what does it mean when life on earth is reducing entropy in this system? We are tipping the balance by assimilating atoms in a more orderly fashion with each birth. This means something bad is happening somewhere close-by. ;-(

New comment by 00098345 in "Jupiter’s Great Red Spot Likely a Massive Heat Source"

00098345 — Fri, 29 Jul 2016 00:13:32 +0000

The current understanding of waves on a liquid surface is attributed to a clear boundary between two fluids with a density difference and a velocity gradient. Gravity plays no role in this.

Kelvin-Helmholtz instability: https://en.wikipedia.org/wiki/Kelvin%E2%80%93Helmholtz_insta...

New comment by 00098345 in "Xen exploitation part 2: XSA-148, from guest to host"

00098345 — Thu, 28 Jul 2016 00:30:05 +0000

Security on bare metal OS is a hard problem.

Square or cube that to get an idea of security in virtualization.

New comment by 00098345 in "LastPass autofill exploit"

00098345 — Wed, 27 Jul 2016 22:42:56 +0000

You are approaching from the wrong angle. How much was the exploit "worth" to the company?

Some people want to watch the burn. An attacker could make it known anonymously and LastPass will never recover from that onslaught.

New comment by 00098345 in "Ask HN: Why isn't there a professional body for Computer Science?"

00098345 — Wed, 27 Jul 2016 00:09:25 +0000

Then my friendly advice is to add an "/s" after your comment so that you leave no doubt about the interpretation.

New comment by 00098345 in "Super-hard metal 'four times tougher than titanium'"

00098345 — Mon, 25 Jul 2016 00:26:20 +0000

> Elasticity is how much you can deform (stretch) an object, before the deformation is no longer reversible. Think of a rubber band, you can stretch it a little, and it returns to its original shape. Stretch it a lot, and it breaks down and does not return to its original shape. > Plasticity is how much you can deform an object before it breaks. This is the snapping point in the rubber band, where it completely breaks.

These both are completely false.

Elasticity is the idealistic property of a solid material to get back to it's original shape after a deformation force is retracted. (property of most solid metals where stress is much below the yield point)

Plasticity is the idealistic property of a solid material to stay in the deformed shape after a deformation force is retracted. (Plasticine)

New comment by 00098345 in "I got arrested in Kazakhstan and represented myself in court"

00098345 — Fri, 22 Jul 2016 05:18:35 +0000

It is unclear what exactly happened. And my guess would be that it was deliberately left out because the blogger initiated the convo.

One should try it in the US after having his visa expired there.

New comment by 00098345 in "We need to call American breakfast what it often is: dessert"

00098345 — Tue, 12 Jul 2016 07:14:40 +0000

Way to go ahead to twist your parent comment into something else. You will never get any amount of sweetness in a south indian breakfast.

But in general, you are correct in that diabetics are off the charts in India. We lead in cardio vascular diseases as well. :-(

New comment by 00098345 in "The Bongard Problems"

00098345 — Sun, 10 Jul 2016 05:59:06 +0000

Interesting tidbit: The author's PhD advisor is the author of the celebrated text "Godel, Escher, Bach".

New comment by 00098345 in "Performance Comparison of JavaScript Frameworks"

00098345 — Sun, 10 Jul 2016 00:45:14 +0000

Just for reference, the fastest framework can be found here: [Vannilajs](http://vanilla-js.com/) .

New comment by 00098345 in "Dispelling myths about the autistic programmer"

00098345 — Sun, 10 Jul 2016 00:35:09 +0000

> All, like Jobs, are considered to be "assholes" by some, and absolutely loved by others.

I think the results are appreciated by-and-large by the people who haven't worked with them. For people who have, they might add the "...but he is an asshole" postscript/disclaimer.

New comment by 00098345 in "Dispelling myths about the autistic programmer"

00098345 — Sun, 10 Jul 2016 00:30:53 +0000

It is difficult to judge Phil Katz's case. Phil was very very attached to his father. His fathers' passing destroyed him. His father was probably his best friend. I think that is more important that anything else in Phil's case.

New comment by 00098345 in "Has Physics Gotten Something Really Important Really Wrong?"

00098345 — Sun, 10 Jul 2016 00:26:55 +0000

World-over, the degree conferred for significant contribution through original work in Science (and Engineering) has principally been Doctor of Philosophy. I doubt if it will ever change.