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Checking images for similarity with OpenCV
...Downsides: It may be slow. It is not perfect.
Over on the OpenCV Q&A site I am talking about the difference between feature descriptors, which are great when comparing whole images and texture descriptors, which are used to identify objects like human faces or cars in an image.
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PHP function to get the subdomain of a URL
...There is a list with all domain suffixes at https://publicsuffix.org. This site also links to a PHP library: https://github.com/jeremykendall/php-domain-parser.
Please find an example below. I also added the sample for en.test.co.uk which is a domain with a multi suffix (co.uk).
<?php
requir...
Explicitly calling return in a function or not
... as well :). Do you consider to provide your explanation for users of this site?
– Petr Matousu
Mar 30 '17 at 8:53
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Using boolean values in C
... since it has a convenient, and hopefully meaningful, name. But, the call sites look like
foo(TRUE);
foo(FALSE):
Here, it's essentially impossible to tell what the parameter meant without always looking at the function definition or declaration, and it gets much worse as soon if you add even mor...
Performance optimization strategies of last resort [closed]
There are plenty of performance questions on this site already, but it occurs to me that almost all are very problem-specific and fairly narrow. And almost all repeat the advice to avoid premature optimization.
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Command-line Tool to find Java Heap Size and Memory Used (Linux)?
.... Useful to get an at a glance view of usage.
See jstat docs on Oracle's site.
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Update Eclipse with Android development tools v. 23
... installing Eclipse again with a new and fresh ADT bundle from Android web site.
– greywolf82
Jun 26 '14 at 18:46
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How do you increase the max number of concurrent connections in Apache?
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Please advise: the site linked is currently serving malware (and porn)... It's probably hacked... Quite anoying if you are at work searching for a solution on stackoverflow and a full blown porn site opens... sitecheck.sucuri.net/results/www.ge...
What is a postback?
...ctive integration. Typically the interactive part is done using redirects (site 1 redirects a user to site 2, where they sign in, and are redirected back). The non-interactive part is done using a 'postback', or an HTTP POST from site 2's servers to site 1's servers.
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Is it bad to have my virtualenv directory inside my git repository?
...repo and still deploy to a new server in a single command: virtualenv --no-site-packages --distribute .env && source .env/bin/activate && pip install -r requirements.txt
– RyanBrady
Jul 6 '11 at 2:39
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