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Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...type with non-trivial alignment requirements either (a) proving at compile time that the pointer doesn't point to a misaligned member of a packed struct, or (b) generating bulkier and slower code that can handle either aligned or misaligned objects.
I've submitted a gcc bug report. As I said, I do...
How to remove/ignore :hover css style on touch devices
...ts whenever a touch is detected.
function watchForHover() {
// lastTouchTime is used for ignoring emulated mousemove events
let lastTouchTime = 0
function enableHover() {
if (new Date() - lastTouchTime < 500) return
document.body.classList.add('hasHover')
}
function disableHo...
Time complexity of Sieve of Eratosthenes algorithm
...overall, amortized — you will move ahead to find the next number only n times in total, not per step. So this whole part of the algorithm takes only O(n).
So using these two you get an upper bound of O(n log log n) + O(n) = O(n log log n) arithmetic operations. If you count bit operations, sinc...
Django: How to manage development and production settings?
...ODULE=myapp.production_settings.
Note that you can run this export at any time from a shell — it does not need to live in your .bashrc or anything.
Setting DJANGO_SETTINGS_MODULE using a Process Manager
If you're not fond of writing a bootstrap script that sets the environment (and there are ve...
400 vs 422 response to POST of data
...ld now seem to be the best HTTP/1.1 status code for your use case.
At the time of your question (and my original answer), RFC 7231 was not a thing; at which point I objected to 400 Bad Request because RFC 2616 said (with emphasis mine):
The request could not be understood by the server due to m...
nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
...et_size in steps 128, 256, 512, and so on (increasing by a power of 2 each time). eg. server_names_hash_bucket_size 128;
restart the nginx each time until error is gone (error will always be the same no matter what value you already set)
...
java.net.SocketException: Connection reset
...ur TCP connection. This could happen if you don't send any data for a long time (2 hours is a common time-out), or because the peer was rebooted and lost its information about active connections. Sending data on one of these defunct connections will cause a RST too.
Update in response to addition...
What is the difference between background and background-color
...ecifications. It's basically a shorthand, but a reset as well.
I will sometimes use it to overwrite previous background specifications in template customizations, where I would want the following:
background: white url(images/image1.jpg) top left repeat;
to be the following:
background: black;
...
Implementing INotifyPropertyChanged - does a better way exist?
...performance... However I really like the fact that it's checked at compile time, and is correctly refactored by the "Rename" command
– Thomas Levesque
Aug 22 '09 at 21:23
7
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Google Maps Android API v2 - Interactive InfoWindow (like in original android google maps)
...how normal button's pressed state. Even if I pressed the button for a long time, it just remained unpressed on the screen. I believe this is something that is handled by the map framework itself which probably makes sure not to show any transient state in the info windows. But I could be wrong, I di...