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How can I check if an ip is in a network in Python?
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Additionally, struct.unpack('L',socket.inet_aton(ip))[0] will fail on architectures where 'L' unpacks to something different than 4 bytes, regardless of endianness.
– Rafał Dowgird
May 4 '09 at...
How can I see the raw SQL queries Django is running?
...t the output of the query is not valid SQL, because:
"Django never actually interpolates the parameters: it sends the query and the parameters separately to the database adapter, which performs the appropriate operations."
From Django bug report #17741.
Because of that, you should not send qu...
JavaScript: Class.method vs. Class.prototype.method
... are extending the constructor function prototype, it will be available to all the object instances created with the new keyword, and the context within that function (the this keyword) will refer to the actual object instance where you call it.
Consider this example:
// constructor function
funct...
How to create a checkbox with a clickable label?
...can explain the comment @John left please do, because it makes no sense at all to me.
– Wesley Murch
Jul 30 '15 at 13:45
16
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Insert, on duplicate update in PostgreSQL?
...it would be much slower, because each upsert would be its' own individual call into the database.
– baash05
Mar 1 '12 at 0:27
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Updating MySQL primary key
I have a table user_interactions with 4 columns:
3 Answers
3
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Is using a lot of static methods a bad thing?
I tend to declare as static all the methods in a class when that class doesn't require to keep track of internal states. For example, if I need to transform A into B and don't rely on some internal state C that may vary, I create a static transform. If there is an internal state C that I want to be ...
Disable ALL CAPS menu items in Visual Studio 2013
...l Studio 2013 (as in VS 2012), MS reinforced their design decision to make ALL CAPS MENU ITEMS the default. The methods for reverting the menu style are almost the same methods used for Visual Studio 2012, which has been discussed before.
Update (after Visual Studio 2013 Update 4)
As of Visual Stu...
More elegant way of declaring multiple variables at the same time
...variables with Boolean values is the best way to write your routine (especially if they really have one-letter names :)
Depending on what you're doing, it may make sense to use a dictionary instead. For example, if you want to set up Boolean preset values for a set of one-letter flags, you could d...
Starting python debugger automatically on error
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You can use traceback.print_exc to print the exceptions traceback. Then use sys.exc_info to extract the traceback and finally call pdb.post_mortem with that traceback
import pdb, traceback, sys
def bombs():
a = []
print a[0]
if __name__ == '...