1amzave

8 ms·

31.
by 1amzave 12y ago
Heck, for a string manipulation that simple you don't even need `sed`, you can just use the shell -- modulo potential escaping errors (I haven't actually tested this), something like this should do the trick: ProxyCommand ss
32.
by 1amzave 12y ago
As of late I've been using a mix of Chrom{e,ium} and Firefox, and frankly at this point I've basically resigned myself to the fact that browsers, as a class of software, are just universally terrible. So I say "fuck it, I&#x
33.
by 1amzave 12y ago
As opposed to LLVM's tblgen?
34.
by 1amzave 12y ago
> CISC was always better externally ...aside from being orders of magnitude more of an ass-pain if you ever have to write software that actually deals with machine code (at least on x86; perhaps other CISCs aren't as bad). Simple
35.
by 1amzave 12y ago
valgrind proper is actually a much more general binary instrumentation/execution engine that supports a number of different useful tools; most of what the article is actually describing is memcheck, the tool it runs by default when y
36.
by 1amzave 12y ago
I sympathize, but I have to say I find it far less annoying than the constant implorings to "follow me on Twitter!" that have become obnoxiously ubiquitous in the last few years.
37.
by 1amzave 12y ago
Maybe the odds of it doing so are smaller, but if you think a broken nvidia.ko can't screw up anyone's data I think you're simply mistaken. Say Nvidia's driver has a use-after-free bug: it kmalloc()s a buffer, kfree()s
38.
by 1amzave 12y ago
That looks neat -- I've been using a somewhat similar little home-baked thing of my own (simple shell script wrapping gpg), largely because I wanted a simple command-line password manager and this 'pass' thing I've been
39.
by 1amzave 12y ago
...and which essentially amount to "hey, look what's in the man page!".
40.
by 1amzave 12y ago
It's less a matter of age than environment -- there are still plenty of places using lots of tape. (It's not like we're talking about vacuum tubes or core memory here...)
41.
by 1amzave 12y ago
I'd say "random access" is basically just a relative term. Tape, yes, is about the least random-access-friendly medium I can think of. Compared to that, HDDs are quite efficient at random access. DRAM then makes HDDs look
42.
Re: compare memcmp with 0(marc.info)
1 points by 1amzave 12y ago|0 comments
43.
by 1amzave 12y ago
I think there were some older mainframes (CDC? System 360?) that may have done this to some extent -- it'd only really be feasible up to a certain (very low) point though, since you have the potential for an exponential explosion in th
44.
by 1amzave 13y ago
> (I'm not even sure you can load your openssh server key into ssh-agent, can you?) Yes, actually, as of OpenSSH 6.3 you can. (I wrote most of the patch that added that feature.) However, even without doing that the OpenSSH serv
45.
by 1amzave 13y ago
> When the serialization format matches the in-memory format, you can mmap directly into a struct, which is fast and convenient. ...and a non-starter if you ever have data interchange between differing types of machines.
46.
by 1amzave 13y ago
> That's exactly equivalent to having a "size" parameter with the same size as the pointer, except you have to use a substract instruction when you want to get the length of the string, so I'd say it's inferior
47.
by 1amzave 13y ago
I've never understood why people always seem to immediately bring up segfaults as scary C behavior. Is it really that different than Python dying with "AttributeError: 'NoneType' object has no attribute 'foo'&
48.
by 1amzave 13y ago
> immutable structures can't create cycles Perhaps I'm misunderstanding something, but doesn't "tying the knot" in Haskell do just that? (Create a cycle from immutable structures.)
49.
by 1amzave 13y ago
Hmm -- I watched "Computers for Cynics 1 - The Nightmare of Files and Directories" (which I won't bother linking to, because frankly I can't recommend watching it), since file and storage systems are a topic of some inte
50.
by 1amzave 13y ago
> It is kind of impressive that you can write code that is as fast as C without writing C, even if it is ugly. Impressive, perhaps -- but from a maintainability perspective I think I might prefer to pay the cost of jumping the language
51.
by 1amzave 13y ago
Turn it into a real computer -- i.e. materialize a keyboard, decent-sized monitor, and ethernet port out of the aether.
52.
by 1amzave 13y ago
I've been doing the same for a while, despite the fact that C-\ is in fact sort of already "taken" by default (SIGQUIT). That's not something I use often, but when I want it it's still easy enough to get by just
53.
by 1amzave 13y ago
Correct me if I'm wrong here, but I believe lsof can only display files held open at a given point in time (when you run lsof), no? So if a process opens a file, does something with it, and then immediately closes it, you're unli
54.
by 1amzave 13y ago
Very cool overall. However: > Searching for hay in the haystack is not a common use case for a regular expression matcher. Where'd that conclusion come from? Surely "does this pattern exist anywhere in this string?" with the answer
55.
by 1amzave 13y ago
OK, bear with me as we get slightly contrived here...(and deviate a little from my earlier, somewhat less thought out example). Say your workload has some inherent requirement for random (throughout its entire execution) access to a dataset
56.
by 1amzave 13y ago
Say you're running a problem of size N on a processor with a cache of size N/2. Adding another processor with another N/2 cache means your whole problem now fits in cache, so you'll probably suffer fewer cache misses, and thus could end up
57.
by 1amzave 14y ago
> Parallel processing models give you, at best, linear speedup. Most commonly, yes, though in practice superlinear speedups can occur in some situations. (Not that this negates your overall point, just a nitpick.)
58.
by 1amzave 14y ago
> One problem that becomes apparent with a longer interval and longer rebuild times: if the make takes say 30s, and you're rebuilding every 60s, then your site will be updated every 1.5 minutes instead of every minute. Maybe not what y
59.
by 1amzave 14y ago
Though that's not strictly a glob, but brace expansion (it will expand to all the numbers in that range regardless of whether or not files with those names exist). bash does have 'shopt -s extglob', which enables a number of useful globbin
60.
by 1amzave 14y ago
> Is Dropbox a toy too? In this context, yes, for exactly the same reasons as GDrive. No one with any sense is going to be running a relational database or MapReduce out of either one. Note that when I say "toy" in this context it's no

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