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What is the smallest possible valid PDF?

...00010 00000 n 0000000053 00000 n 0000000102 00000 n trailer<</Size 4/Root 1 0 R>> startxref 149 %EOF which is 291 bytes of PDF joy. Acrobat opens it, but it complains somewhat. There is one page in it and it is 3/72" square, the minimum allowed by the spec. However, Acrobat X doesn'...
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What is PostgreSQL explain telling me exactly?

MySQL's explain output is pretty straightforward. PostgreSQL's is a little more complicated. I haven't been able to find a good resource that explains it either. ...
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Loop through all nested dictionary values?

...ycle), the stack/recursion will run infinitely. root<-------back edge / \ | _key1 __key2__ | / / \ \ | |->key1.1 key2.1 key2.2 key2.3 |...
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Version vs build in Xcode

...ps if you want to write your version/build numbers to your Settings.bundle/Root*.plist file(s). This is extended from the how-to article here. In Xcode 4.2 - 5.0: Load your Xcode project. In the left hand pane, click on your project at the very top of the hierarchy. This will load the project se...
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Eclipse executable launcher error: Unable to locate companion shared library

... on XP 32 bit I had to: Move the zip file to the root. Rename it to e.zip. Open in it in 7Zip and rename the "eclipse" folder in there to "e". Unzip it - rename the extracted folder to "eclipse". Bonkers. – RedYeti Mar 26 '13 at 18:30 ...
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What is the use of “assert” in Python?

... errors. The goal of using assertions is to let developers find the likely root cause of a bug more quickly. An assertion error should never be raised unless there’s a bug in your program. share | ...
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How to check iOS version?

...e if < iOS 4.0, and send it to the Detail View Controller myself in the Root View's -didSelectRowAtIndexPath. – jww Jul 17 '11 at 9:36 10 ...
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Why does DEBUG=False setting make my django Static Files Access fail?

...urls in urlpatterns: url(r'^media/(?P<path>.*)$', serve,{'document_root': settings.MEDIA_ROOT}), url(r'^static/(?P<path>.*)$', serve,{'document_root': settings.STATIC_ROOT}), and both static and media files were accesible when DEBUG=FALSE. Hope it helps :) ...
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Can I use __init__.py to define global variables?

...e thought that the best place would be in in the __init__.py file of the root package. But I don't know how to do this. Suppose I have a few subpackages and each with several modules. How can I access that variable from these modules? ...
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How do you create a daemon in Python?

...g a well-behaved daemon process: prevent core dumps (many daemons run as root, and core dumps can contain sensitive information) behave correctly inside a chroot gaol set UID, GID, working directory, umask, and other process parameters appropriately for the use case relinquish elevated suid, sgid ...