kpreid

5 ms·

1.
by kpreid 9y ago
A capability system is sort of like having lots and lots of those roles. But a key element is that within the system you don't have to be an administrator or have any kind of privileged-operation access to create a new capability, you
2.
by kpreid 9y ago
Some people have used it with Raspberry Pis; I don't own any myself. I tried a BeagleBone Black once and found that the CPU couldn't keep up. The CPU use will vary a lot depending on what sample rate you set and what demodulator y
3.
by kpreid 9y ago
The thing that happened is RTL-SDR, which is _not_ the name of a product but refers to the _use_ of a mass-market TV receiver USB device that happened to have a raw IQ signal mode in the hardware (RTL2832U chip). This being so cheap ($15-20
4.
by kpreid 9y ago
A public demo instance is blocked on adding sufficient anti-DoS provisions to the server. One possibility I've considered is to make a simulation-only version packaged for Sandstorm, which would allow for a one-click trial experience —
5.
by kpreid 9y ago
It turns out that UI is hard! But the biggest not-crap thing from back when I wrote that (persistent waterfall) is not actually visible in a screenshot; it would need a video. — a video would make sense, wouldn't it.
6.
by kpreid 9y ago
As the author, I'll say that there's a large amount of "ooh shiny bleeding edge" and "if it works for me it's fine" going on. I see that newer Safari has a _different_ failure mode and I should look into t
7.
by kpreid 9y ago
That is exactly what I plan to do.
8.
by kpreid 12y ago
The metagame (or "the meta") is the long-term game in which the moves are "I am going to play this character/deck and practice/use these strategies" -- decisions you make at the beginning, or before, play star
9.
by kpreid 12y ago
Rotary motion was used for conversion long before semiconductor devices were invented: https://en.wikipedia.org/wiki/Rotary_converter I don't know what the limits on efficiency are, and the Wikipedia article mainl
10.
by kpreid 12y ago
The cable is the least likely part to be the source of the problem. The data lines are inside a shield, and in USB they are balanced (“D+” and “D-”). Both of these act to prevent radiation of the signals. If a keyboard radiates it is like
11.
by kpreid 13y ago
I use this for programs which otherwise output to pagers, when I'd rather have the output just in terminal scrollback. (And unlike the -1 option it's generic to all programs with terminal behaviors.)
12.
by kpreid 13y ago
> Somehow, natural languages appear to fit somewhere in the middle. I don't recall where, but I have heard an argument that there is pressure on the information density of natural language, as follows: If you are frequently misunder
13.
by kpreid 13y ago
The old flat had border lines (usually black lines between light-colored backgrounds). The new flat uses differences between background colors to mark the same sorts of boundaries. I think this makes enough difference that it's worth c
14.
by kpreid 13y ago
For 35 degrees, you don't need 3D; a ring of 72 35-degree angles is a cycle (with a star pattern, rather than a polygon). There is a similar solution for any rational fraction of a full revolution (equivalently, any angle which is rati
15.
by kpreid 13y ago
Not a bad idea to respond to visibility, but to solve the blob problem it would be better to explicitly synchronize text creation and text position. This is basic in game/simulation programming: you don't want the rules of the game to chang
16.
by kpreid 14y ago
Only specific questions: “This question is protected to prevent "thanks!", "me too!", or spam answers by new users. To answer it, you must have earned at least 10 reputation on this site.” It's basically like semi-protection on Wikipedia: t
17.
by kpreid 14y ago
I like it. Feature request: once I've picked a search result, (allow me to) hide the results — that is, have no left sidebar, so the whole UI fits in a smaller window.
18.
by kpreid 14y ago
The halting problem is undecidable over all possible Turing machines (i.e. programs, assuming Turing machines are an adequate model for the sort of programs of interest). It is entirely possible to choose some subset for which you know how
19.
by kpreid 14y ago
A bit of disagreement with your last paragraph: The (Common) Lisp macro processor is Turing-complete trivially because it invokes a Turing-complete language along the way, not because of power inherent in its expansion strategy. Common Lisp
20.
by kpreid 14y ago
display: (table | table-cell | table-row); Same layout functionality, no abuse of HTML semantics.
21.
by kpreid 14y ago
Design by committee ("the players say they really want X, let's include X") is not the same thing as design with consideration of feedback ("the players really liked X_0, let's build X_1, and deemphasize Y because it didn't turn out fun").
22.
by kpreid 15y ago
I note that this is the same workflow as for making a modified copy of some content on a wiki. (And when a page is read-only on MediaWiki, "edit" becomes labeled "view source", but it's the same thing.) Is there a UI solution for this probl
23.
by kpreid 15y ago
So did the Newton (1993 per Wikipedia). I remember it as my first-ever encounter with a (small) switching power supply — it seemed unreasonably light as “wall-warts” went.
24.
by kpreid 15y ago
The integrity of any "static file" which is a HTML or JS component of a web application is necessary to the security of that entire application. (Unfortunately.)
25.
by kpreid 15y ago
Indeed this is good style. The following, however, is not good style for allocating an array: long_struct_name *fooArray = malloc(count * sizeof * fooArray);
26.
by kpreid 15y ago
The esoteric language HQ9+ does this.
27.
by kpreid 15y ago
It's just the not-logged-in view. The alternative would be a security hole in Google.
28.
by kpreid 15y ago
The Nexus One's below-the-screen buttons are capacitive. The Nexus One only has a mechanical trackball.
29.
by kpreid 15y ago
For us MobileMe/.Mac users, the usernames are in the format user(mac.com)@aol.com, and presumably user(me.com)@aol.com. Unfortunately, not @mac.com/@me.com.
30.
by kpreid 15y ago
I have noticed Google has one service which has responsive support: Google Project Hosting. < http://groups.google.com/group/google-code-hosting&#62 ; It may be just due to low volume of requests.

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