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Get generated id after insert
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I had quite a bit of problems with this on mySQL, the LAST_INSERT_ID is not reliable way to get the ID, if you have users hammering the database, the ID returned may not be the ID that was inserted by the query you have run, several other users might impact on the ret...
Is it bad to have my virtualenv directory inside my git repository?
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If you, say pip install mysql-python, on a 64 bit machine, and then someone with a 32 bit machine tries to use it, it will not work. It uses a C module, like many Python modules do, to increase performance. I imagine Windows->Linux would also not...
How do I add files without dots in them (all extension-less files) to the gitignore file?
...n Git 1.7.1 while it worked fine in 1.9.0. In my case adding a file in the root directory worked fine, but adding a file with an extension inside a subdirectory was shown as ignored. This seems to be because 1.7.1 didn't support the ** pattern yet, see here!
– mxmlnkn
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What is the difference between synchronous and asynchronous programming (in node.js)
...f the sql driver you use. The driver should spawn a new thread, connect to mysql and run the query. Once done, post the result to the event queue, and Node will call the callback.
– Salvatorelab
Oct 21 '13 at 7:36
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Path of assets in CSS files in Symfony 2
...source: .
# type: assetic
Specify the URL as absolute from the web root. For example, background-image: url("/bundles/core/dynatree/skins/skin/vline.gif"); Note: our vhost web root is pointing on web/.
No usage of cssrewrite filter
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JPA EntityManager: Why use persist() over merge()?
...ttached, entityToSave);
return attached;
}
Although if connected to MySQL merge() could be as efficient as persist() using a call to INSERT with ON DUPLICATE KEY UPDATE option, JPA is a very high level programming and you can't assume this is going to be the case everywhere.
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Using arrays or std::vectors in C++, what's the performance gap?
...all efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%".
(Thanks to metamorphosis for the full quote)
Don't use a C array instead of a vector (or whatever) just because you believe it's faster as i...
How to link Docker services across hosts?
...is taken from the blog post:
$ docker run -d -P -e constraint:storage=ssd mysql
One of the supported constraints is "node" that allows you pin a container to a specific hostname. The swarm also resolves links across nodes.
In my testing I got the impression that Swarm doesn't yet work with volum...
Are Java static calls more or less expensive than non-static calls?
... If I trained a parrot to say "premature opimisation is the root of all evil" I'd get 1000 votes from people who know as much about performance as the parrot.
– rghome
Jan 28 '19 at 14:54
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What is the purpose of global.asax in asp.net
.../end events and for global error handling.
When used, it should be in the root of the website.
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