matthavener

11 ms·

61.
by matthavener 14y ago
For anyone thinking about watching: the presentation is incredibly good. The name is kinda misleading -- they talk more about modern x86 architecture and actual numbers of various algorithms than the lock free algorithms themselves. Both of
62.
by matthavener 14y ago
At some point when they were a few meters away, the NASA video mentioned the Dragon was now "free floating". So, I think they were continuously gently firing the thrusters to maintain orbit until they got extremely close.
63.
A core.logic Primer: gentle introduction to logic programming in Clojure(github.com)
8 points by matthavener 14y ago|0 comments
64.
by matthavener 14y ago
Every RuggedCom device starts with 00-0A-DC ( http://www.coffer.com/mac_find/?string=ruggedcom ). Even without the MAC, you really only have to search 2^24 possible passwords. And that's assuming they randomize their mac allocations.
65.
by matthavener 15y ago
It makes sense to me. The language is designed to be as small as possible.. everything else can be built from macros or reader macros. There's not too much in the actual language itself: http://clojure.org/special_forms
66.
by matthavener 15y ago
They're just adding more default literals to the language. Clojure already has strings "like this", characters \l \i \k \e \t \h \i \s, numbers 1234, regex #".*". Now you can have dates, times, or presumably some other literal that's applic
67.
by matthavener 15y ago
Reminds me of one of my favorite all time John Carmack tweets: "Sometimes, the elegant implementation is just a function. Not a method. Not a class. Not a framework. Just a function." https://twitter.com/#!/ID_AA_Carmack/status/53512300451
68.
by matthavener 15y ago
Not exactly. Some function expecting a c-string could actually read too short. What happens is some attacker sends a message using a channel/format that specifies a length and a buffer. But, the buffer contains a "\0". For example, (10, "wt
69.
by matthavener 15y ago
I may be misinterpreting the patch, but it seems like this is a NULL byte injection vulnerability, all stemming from '\0' termination in C-strings. I wonder if length-buffer pairs are more practical when security is a consideration? Similar
70.
by matthavener 15y ago
from inside the apple corporate IP block?
71.
by matthavener 15y ago
Siboney appears to be a good distance from Guantanamo Bay.
72.
by matthavener 15y ago
This sounds like its designed to compete with pininterest. I wonder if they'll build "walls" of "wants"?
73.
by matthavener 15y ago
I wonder how much of the server aspect is reduced with the existence of parse.com. You still have to build your model, but I would imagine a lot of the server setup and "data format" concerns are no longer valid.
74.
by matthavener 15y ago
Agreed. I think commuting by bike on trails, small streets, or separated from traffic is must less stressful than biking on a busy street. Even taking a bus is a bit more stressful than driving (for me) because the buses are so infrequent.
75.
by matthavener 15y ago
This is even more amazing, because the people know they're not being watched. I wonder how ingrained the image of eyes is? Could you achieve the same effect with a picture of a CCTV camera?
76.
by matthavener 15y ago
Its available on netflix instant http://movies.netflix.com/WiMovie/Objectified/70114976
77.
by matthavener 15y ago
Parse does a lot more than iCloud. You can manage users and share data between users, facebook integration and push notification services.
78.
by matthavener 15y ago
what evidence do you have of an NSA shutdown?
79.
by matthavener 15y ago
In the interest of community justice, what was your original title?
80.
by matthavener 15y ago
I doubt it. RMS uses some laptop specifically because the processor is open source. From his wiki page: "Stallman's only computer is a Lemote Yeeloong netbook (using the same company's Loongson processor) which he chose because it can run w
81.
by matthavener 15y ago
Why?
82.
by matthavener 15y ago
In C, the array as a function parameter is different from an array as a variable/struct member. So, as a parameter, sizeof(x) is sizeof(int*). As a variable, sizeof(x) is sizeof(int[5]).
83.
by matthavener 15y ago
Or, not to be confused with: #include <stdio.h> #include <stdlib.h> #include <string.h> void foo(int x[5]) { printf("%p\n", x); printf("%p\n", x+1); printf("%p\n", &x); printf("%
84.
by matthavener 15y ago
They really should be listing these answers in terms of sizeof(int) instead of assuming all 64-bit platforms have sizeof(int) == 4. Pointers are confusing in C, but so is the common assumption that sizeof(int) is always 4.
85.
by matthavener 15y ago
The ring buffer is a nice trick, but it only works on array sizes that are a multiple of 2. The generalized version would be "array[i++ % ARRAY_SIZE] = data". If ARRAY_SIZE happens to be a multiple of two, I'm sure most compilers would opti
86.
by matthavener 15y ago
I use lsof a lot in combination with strace. E.g. lsof -p some_process tells you that fd 9 is the socket you're interested in. Then you can run something like strace -e read=9 to see all the reads on that socket.
87.
by matthavener 15y ago
I really like your "clarity over cleverness" rule. It seems to incorporate so many good practices: premature optimization, over-design/second system syndrome, and doing the most obvious thing.
88.
by matthavener 15y ago
One of my favorite memories from /. was refreshing to see a new version of the kernel was available. You'd spend a few hours downloading it, compiling, and reboot. Usually there were no new features you wanted, no bugs fixed, just the idea
89.
by matthavener 15y ago
OpenSSH uses OpenSSL for crypto
90.
by matthavener 15y ago
This article skips over CTR mode which is gaining popularity. It has nice properties like parallel enc/dec, no padding requirement, seek to any block, and the ability to lose blocks. AES 128 CTR is the default cipher suite in the SRTP stand

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