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Legality of COW std::string implementation in C++11
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@Cheersandhth.-Alf, according to this, at least GCC's COW implementation does do exactly what DaveS is saying. So at least that style of COW is prohibited by the standard.
– Tavian Barnes
Jan 18 '15 at 17:48
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how to release localhost from Error: listen EADDRINUSE
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On Linux (Ubuntu derivatives at least)
killall node
is easier than this form.
ps | grep <something>
kill <somepid>
Neither will work if you have a orphaned child holding the port. Instead, do this:
netstat -punta | grep <port>
If ...
How to redirect to a 404 in Rails?
....find(params[:id]) or not_found
This could certainly be improved, but at least, I have different views for not_found and internal_error without overriding core Rails functions.
share
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improve th...
delete_all vs destroy_all?
...on all matching results of :conditions (if you have one) which could be at least NUM_OF_RESULTS SQL statements.
If you have to do something drastic such as destroy_all() on large dataset, I would probably not do it from the app and handle it manually with care. If the dataset is small enough, yo...
Unable to execute dex: method ID not in [0, 0xffff]: 65536
...at you mentioned? Regarding the build time - there's solution for this, at least for development builds - see my answer here: stackoverflow.com/a/30799491/1233652
– Alex Lipov
Aug 15 '15 at 13:22
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to drawRect or not to drawRect (when should one use drawRect/Core Graphics vs subviews/images and wh
... an image from the GPU, changing it, then uploading the whole image (or at least a comparatively large chunk of it) back to the GPU is rather slow. Also, the actual drawing that Quartz does, while really fast for what you are doing, is way slower than what the GPU does.
That's obvious, considering ...
Android AsyncTask threads limits?
...cutor will create a new thread and execute it immediately. If there are at least core pool size threads running, it will try to queue the job and wait until there is an idle thread available (i.e. until another job is completed). If it is not possible to queue the job (the queue can have a max capac...
Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...u?
With regards to msgpack vs bson vs protocol buffers... msgpack is the least bytes of the group, protocol buffers being about the same. BSON defines more broad native types than the other two, and may be a better match to your object mode, but this makes it more verbose. Protocol buffers have ...
What is the difference between lower bound and tight bound?
...nd lower bound).
For example, an algorithm taking Omega(n log n) takes at least n log n time, but has no upper limit. An algorithm taking Theta(n log n) is far preferential since it takes at least n log n (Omega n log n) and no more than n log n (Big O n log n).
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Creating folders inside a GitHub repository without using Git
...e a new folder from the web interface, but it would require you to have at least one file within the folder when creating it.
When using the normal way of creating new files through the web interface, you can type in the folder into the file name to create the file within that new directory.
For e...