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How do you debug PHP scripts? [closed]

...r_dump and print at various points to see where your flow goes wrong. When all else fails though and all I have is SSH and vim I still var_dump()/die() to find where the code goes south. share ...
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How to create a video from images with FFmpeg?

...pix_fmt yuv420p out.ogg Your images should of course be sorted alphabetically, typically as: 0001-first-thing.jpg 0002-second-thing.jpg 0003-and-third.jpg and so on. I would also first ensure that all images to be used have the same aspect ratio, possibly by cropping them with imagemagick or n...
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Getting number of elements in an iterator in Python

...ve an answer, this answer avoids instantiation of a list, and it is empirically faster by a constant than the reduce method listed above. – Phillip Nordwall Aug 2 '12 at 15:27 5 ...
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Will the base class constructor be automatically called?

... age of customer be 2? It seems like the base class's constructor will be called no matter what. If so, why do we need to call base at the end sometimes? ...
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What to do Regular expression pattern doesn't match anywhere in string?

... Contrary to all the answers here, for what you're trying to do regex is a perfectly valid solution. This is because you are NOT trying to match balanced tags-- THAT would be impossible with regex! But you are only matching what's in one ...
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Is it possible to make abstract classes in Python?

...nitions of those methods: >>> Abstract() Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: Can't instantiate abstract class Abstract with abstract methods foo >>> class StillAbstract(Abstract): ... pass ... >>> StillAbstr...
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How to manually create icns files using iconutil?

...following instructions (link): Use iconutil to Create an icns File Manually The iconutil command-line tool converts iconset folders to deployment-ready, high-resolution icns files. (You can find complete documentation for this tool by entering man iconutil in Terminal.) Using this tool al...
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Is it safe to push_back an element from the same vector?

If the second push_back causes a reallocation, the reference to the first integer in the vector will no longer be valid. So this isn't safe? ...
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Convert PDF to clean SVG? [closed]

...t they often lose the font data, but don't seem to approximate a good, installed font. How does PDF display it if SVG can't? – DanRedux Apr 23 '12 at 21:30 ...
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How do I filter ForeignKey choices in a Django ModelForm?

... can populate the validation data by making using the super(...).__init__ call in your overridden method. If you are making several of these queryset changes its a lot more elegant to package them by overriding the init method. – michael Aug 7 '09 at 4:53 ...