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..."/path/to/image"><img src="/path/to/image" /></a> in a web app.
10 Answers
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Imitate Facebook hide/show expanding/contracting Navigation Bar
In the new iOS7 Facebook iPhone app, when the user scrolls up the navigationBar gradually hides itself to a point where it completely vanishes. Then when the user scrolls down the navigationBar gradually shows itself.
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What is the most efficient way to store a list in the Django models?
...the root of all evil."
With that firmly in mind, let's do this! Once your apps hit a certain point, denormalizing data is very common. Done correctly, it can save numerous expensive database lookups at the cost of a little more housekeeping.
To return a list of friend names we'll need to create a ...
About catching ANY exception
...hat being said, it's good to track down as many as you can and handle them appropriately and then have a backup catch all for the ones you miss.
– Blaze
Oct 19 '15 at 8:04
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In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
...ng get_readonly_fields.
Usually you should declare something like this in app/admin.py:
class ItemAdmin(admin.ModelAdmin):
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readonly_fields = ('url',)
I've adapted in this way:
# In the admin.py file
class ItemAdmin(admin.ModelAdmin):
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def get_readonly_fields(self, request...
How do I use Ruby for shell scripting?
...h()
For file system operations I almost always use Pathname. This is a wrapper for many of the other file system related classes. Also useful: Dir, File...
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py2exe - generate single executable file
...t release (1.3) is somewhat outdated. It's been working really well for an app which depends on PyQt, PyQwt, numpy, scipy and a few more.
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When is a C++ destructor called?
...te an item in the (previously) unused part of its memory space.
Now, what happens when/if you erase an item from the vector? It can't just use delete -- that would release its entire block of memory; it needs to destroy one object in that memory without destroying any others, or releasing any of the...
getting the screen density programmatically in android?
...ources().getDisplayMetrics();
Though Android doesn't use a direct pixel mapping, it uses a handful of quantized Density Independent Pixel values then scales to the actual screen size. So the metrics.densityDpi property will be one of the DENSITY_xxx constants (120, 160, 213, 240, 320, 480 or 640 d...
Date vs DateTime
...ce that using date for anything is a bad idea unless you're 100% sure your app will only ever operate in one time zone. Saving everything as datetime gives you the best of both worlds, including most critically, an easy way to avoid timezone nightmares if your server's timezone configs ever change....