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Django. Override save for model

...self._image_changed = True # Or put whole logic in here small = rescale_image(self.image,width=100,height=100) self.image_small=SimpleUploadedFile(name,small_pic) def get_image(self): return self._image image = property(get_image, set_image) # this is ...
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JSON serialization of Google App Engine models

... There is a small mistake in the code: Where you have "output[key] = to_dict(model)" it should be: "output[key] = to_dict(value)". Besides that it's perfect. Thanks! – arikfr Nov 7 '09 at 22:02 ...
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Is there a __CLASS__ macro in C++?

Is there a __CLASS__ macro in C++ which gives the class name similar to __FUNCTION__ macro which gives the function name ...
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How to detect the end of loading of UITableView

...htafoya's comment is right. If you want this code to detect end of loading all data from source, it wouldn't, but that's not the original question. This code is for detecting when all cells that are meant to be visible are displayed. willDisplayCell: used here for smoother UI (single cell usually di...
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How to manually expand a special variable (ex: ~ tilde) in bash

... Using eval is a horrible suggestion, it's really bad that it gets so many upvotes. You will run into all sorts of problems when the variable's value contains shell meta characters. – user2719058 Aug 31 '14 at 19:47 ...
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How do I time a method's execution in Java?

... actually, its "new-fashioned" because you used nanoTime, which wasn't added until java5 – John Gardner Oct 7 '08 at 22:26 ...
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Standard alternative to GCC's ##__VA_ARGS__ trick?

... It is possible to avoid the use of GCC's ,##__VA_ARGS__ extension if you are willing to accept some hardcoded upper limit on the number of arguments you can pass to your variadic macro, as described in Richard Hansen's answer to this question. If you do not want to hav...
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How to suppress scientific notation when printing float values?

...cify how many digit after the . you wish to display, this depends on how small is the floating number). See this example: >>> a = -7.1855143557448603e-17 >>> '{:f}'.format(a) '-0.000000' as shown above, default is 6 digits! This is not helpful for our case example, so instead we...
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How do you create a daemon in Python?

...Sander Marechal's code sample is superior to the original, which was originally posted in 2004. I once contributed a daemonizer for Pyro, but would probably use Sander's code if I had to do it over. share | ...
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Are there any JavaScript static analysis tools? [closed]

... Dec 14 '11 at 4:54 Andrew Marshall 87.3k1818 gold badges202202 silver badges204204 bronze badges answered Apr 2 '09 at 17:46 ...