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What are metaclasses in Python?
In Python, what are metaclasses and what do we use them for?
22 Answers
22
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How to detect a Christmas Tree? [closed]
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I have an approach which I think is interesting and a bit different from the rest. The main difference in my approach, compared to some of the others, is in how the image segmentation step is performed--I used the DBSCAN clustering algorithm from Python's scikit-learn; it...
What is the difference between ELF files and bin files?
The final images produced by compliers contain both bin file and extended loader format ELf file ,what is the difference between the two , especially the utility of ELF file.
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Understanding the Rails Authenticity Token
... a form to create, update, or destroy a resource, the Rails app creates a random authenticity_token, stores this token in the session, and places it in a hidden field in the form. When the user submits the form, Rails looks for the authenticity_token, compares it to the one stored in the session, an...
How to create war files
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You can use Ant to set up, compile, WAR, and deploy your solution.
<target name="default" depends="setup,compile,buildwar,deploy"></target>
You can then execute one click in Eclipse to run that Ant target. Here are examples of each of the steps:
Prec...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...iple Chrome versions, side-by-side. This answer quotes my original answer, and includes a script which does the job for you.
Quoted from: section 7 of Cross-browser testing: All major browsers on ONE machine:
Chrome: Stand-alone installers can be downloaded from File Hippo. It is also pos...
How to saveHTML of DOMDocument without HTML wrapper?
...gling to output the DOMDocument without it appending the XML, HTML, body and p tag wrappers before the output of the content. The suggested fix:
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How to avoid annoying error “declared and not used”
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That error is here to force you to write better code, and be sure to use everything you declare or import. It makes it easier to read code written by other people (you are always sure that all declared variables will be used), and avoid some possible dead code.
But, if you real...
Has reCaptcha been cracked / hacked / OCR'd / defeated / broken? [closed]
...re relate to the ineffectiveness of the concept of CAPTCHA, in principle - and while I very much agree with them, in fact gave a talk at OWASP a few months ago explaining just that - the question is very specific, so I will provide for a demonstration.
But first, I will reiterate that demonstration ...
Codesign error: Provisioning profile cannot be found after deleting expired profile
...y. Got a message that a profile had expired, so I removed it from the iPod and from iTunes. When I chose a new profile (one with an * in the identifier), I now get an error:
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