mjs

26 ms·

211.
by mjs 14y ago
How does knowing the altitude help figure out which satellite to look for? (Are GPS receivers "directional", anyway??) GPS satellites orbit at ~20,000km; for the initial acquisition I'm surprised that receivers would care if they're 0km or
212.
by mjs 14y ago
"The BlackBerry® 10 platform has recently achieved FIPS 140-2 certification"--not sure how meaningful this is if you can become certified months before the final hardware/software is available...
213.
by mjs 14y ago
The JS assets 4 through 8 all commence loading at the same time.
214.
by mjs 14y ago
Well, images.apple.com is Akamai'd (22ms for me) and it also supports keep-alive.
215.
by mjs 14y ago
The mod_pagespeed service does some of these optimisations (plus others). It's almost certainly applying JS concatenation, and in the end there's not much difference in load time: http://www.webpagetest.org/result/121024_K0_78b60a17cae988
216.
by mjs 14y ago
Concatenating JS doesn't necessarily make things faster, since (as the article mentions) modern browsers will download up to 8 assets in parallel. If JS is delivered separately, the browser doesn't have to wait for all of it to be download
217.
by mjs 14y ago
Sure, but this approach is going to be much more complicated and less predictable than the "switch the docroot to a completely different directory" model. (e.g. you need to distinguish between asset and non-asset directories, and make a de
218.
by mjs 14y ago
This system ensures the server is always in a consistent state, but client race conditions are still possible if the "old" index.html references an asset that isn't available after the deployment has occurred. Is there any good way of de
219.
by mjs 14y ago
1. Graph is a bit suspicious--why does the adoption rate sometimes go down? (Some quite large drops as well.) 2. Any equivalent graphs for other versions? 3. Adoption rate pretty flat since about two weeks after the iOS 6 release. 4. What
220.
by mjs 14y ago
I think I'd almost prefer to read the questions and answers Google Translated from Russian!
221.
by mjs 14y ago
From the Varnish documentation, addressing an assumption of the Varnish source code that unique inputs will produce a unique SHA-1 hash: "The risk of collision is very small however, and I can all but promise you, that you will be fully off
222.
by mjs 14y ago
"A complicating factor for an Open Source effort is that Spanner includes the use of GPS and Atomic clock hardware." (!) Can anyone explain why such an accurate clock is helpful? I can see that it's needed if you create a document on the E
223.
by mjs 14y ago
It seems like the solution is to special case sensitive headers like "Cookie", so that the compressed version doesn't leak information. But isn't every byte equally worthy of protection? What if there's sensitive information in the body?
224.
by mjs 14y ago
Leica do a monochrome camera too http://en.leica-camera.com/photography/m_system/m_monochrom/ with a similar filter (only necessary to capture colour images) removed. Must be an incredibly small market for these, though...
225.
by mjs 14y ago
So whilst the malware will infect machines more or less indiscriminately, the payload itself can only be successfully decrypted (and therefore activated and executed), on machines that have a specific set of programs installed?
226.
by mjs 14y ago
"Rootbeer was created using Test Driven Development and testing is essentially important in Rootbeer" I'm not sure what the "essentially" means here, but this is the first "big" program I'm aware of that name-checks TDD, and a counter-examp
227.
by mjs 14y ago
The UI for curl is awful (--request to change the method??) and wget's is only slightly better, but they do have the advantage of ubiquity, and it's often useful to email/Skype complete curl or wget command lines about the place to explain
228.
by mjs 14y ago
PHP frameworks are pretty decent, and widely liked (if not loved). Though for some reason this doesn't apply to PHP applications: plenty of people dislike Drupal, or WordPress, or Magento. I'm not sure if there's an equivalent situation a
229.
by mjs 14y ago
I also like how he's decided he's figured out the most difficult bits of how to animate people and animals, but needs help with a few minor details, like a "Diagram of how evreything works."
230.
by mjs 14y ago
From the FAQ http://www.akamai.com/html/io/io_faq.html : the data comes from a sample of 600 million requests (out of two trillion (?)) to mostly US sites who are Akamai customers.
231.
by mjs 14y ago
"This approach should be reversed if you're shipping a library for use by third parties" I'm coming to believe more and more strongly that there should be a difference in the way writing library code, and writing code that uses libraries, i
232.
by mjs 14y ago
I don't understand this. In particular I don't understand the sense in which it is "purely functional". Surely a package manager needs to mutate the state of a system, which seems to be an inherently non-functional operation--? If I have a
233.
by mjs 14y ago
The HEAD version is a bit different (less clear?), although the intent is more or less the same: "describe changes in imperative mood, e.g. "make xyzzy do frotz" instead of "[This patch] makes xyzzy do frotz" or "[I] changed xyzzy to do fro
234.
by mjs 14y ago
It's instructive to read Linus's commits to his hobby project "subsurface": https://github.com/torvalds/subsurface/commits/master Even if I can't code like Linus, I can at least try to write commit messages like his…
235.
by mjs 15y ago
During the original piece, host Ira Glass gives the impression that they were originally sceptical, saying that they "actually spent a few weeks checking everything that he says in his show." So I guess they need to check a bit harder next
236.
by mjs 15y ago
Interesting. Is there an Apache FAQ or similar that explains this in more detail? (The Apache License FAQ http://www.apache.org/foundation/license-faq.html doesn't cover it.)
237.
by mjs 15y ago
There's an "IT Security" stackexchange?! WTF?! How many almost identical communities does stackexchange need?
238.
by mjs 15y ago
The list of trusted partners is interesting to see what happens if you spoof mobile phone numbers. They've already said that it's involved in payment in some way...
239.
by mjs 15y ago
Oh, I didn't realise much of Riak was in C, and the website now mentions Erlang a whole lot less than I remember. Still, in the technology stack http://basho.com/technology/technology-stack/ Riak Core seems to be all Erlang. Bitcask is
240.
by mjs 15y ago
I wonder if Riak will ever get to this point.

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