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Given an emacs command name, how would you find key-bindings ? (and vice versa)
...-h w command-name
If multiple bindings are set for the command they will all be listed.
For the inverse, given a key sequence, you can type
C-h k key-sequence
To get the command that would run.
You can get detailed information about a command, also any non-interactive function defined, by t...
Python logging not outputting anything
...
@Ben where does it say that? All I can see is "The default level is WARNING, which means that only events of this level and above will be tracked, unless the logging package is configured to do otherwise."
– Omri Barel
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What is a “cache-friendly” code?
...her end of the memory spectrum (DRAM), the memory is very cheap (i.e. literally millions of times cheaper) but takes hundreds of cycles after a request to receive the data. To bridge this gap between super fast and expensive and super slow and cheap are the cache memories, named L1, L2, L3 in decre...
Android Webview - Completely Clear the Cache
...te the files older than numDays days from the application cache
* 0 means all files.
*/
public static void clearCache(final Context context, final int numDays) {
Log.i(TAG, String.format("Starting cache prune, deleting files older than %d days", numDays));
int numDeletedFiles = clearCacheF...
How does PHP 'foreach' actually work?
...r the simplest case is Traversable objects, as for these foreach is essentially only syntax sugar for code along these lines:
foreach ($it as $k => $v) { /* ... */ }
/* translates to: */
if ($it instanceof IteratorAggregate) {
$it = $it->getIterator();
}
for ($it->rewind(); $it->v...
How to detect online/offline event cross-browser?
...nows that
such an attempt would fail), and must
return true otherwise.
Finally, the spec notes:
This attribute is inherently
unreliable. A computer can be
connected to a network without having
Internet access.
share
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Convert all strings in a list to int
In Python, I want to convert all strings in a list to integers.
4 Answers
4
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Find all storage devices attached to a Linux machine [closed]
I have a need to find all of the writable storage devices attached to a given machine, whether or not they are mounted.
7...
Algorithm to find top 10 search terms
... looks like an awful lot of data, with a perhaps prohibitive cost to store all frequencies. When the amount of data is so large that we cannot hope to store it all, we enter the domain of data stream algorithms.
Useful book in this area:
Muthukrishnan - "Data Streams: Algorithms and Applications"
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Mipmap drawables for icons
...when building an APK for hdpi devices. If you're building a single APK for all devices, then this doesn't really matter as the launcher can access the drawable resources for the desired density.
The actual mipmap API from 4.3. I haven't used this and am not familiar with it. It's not used by the And...