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Django Model - Case-insensitive Query / Filtering
....objects.filter(name__iexact=my_parameter)
There is even a way to use it for substring search:
MyClass.objects.filter(name__icontains=my_parameter)
There's a link to the documentation.
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Get all related Django model objects
How can I get a list of all the model objects that have a ForeignKey pointing to an object? (Something like the delete confirmation page in the Django admin before DELETE CASCADE).
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Why does HTML5 form-validation allow emails without a dot?
I'm writing a very simple mock-up to demonstrate some HTML5 form-validation. However, I noticed the email validation doesn't check for a dot in the address, nor does it check for characters following said dot.
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Fastest way to determine if an integer is between two integers (inclusive) with known sets of values
... a huge improvement are pretty remote. The code looks like:
// use a < for an inclusive lower bound and exclusive upper bound
// use <= for an inclusive lower bound and inclusive upper bound
// alternatively, if the upper bound is inclusive and you can pre-calculate
// upper-lower, simply ad...
How do you read CSS rule values with JavaScript?
...d like to return a string with all of the contents of a CSS rule, like the format you'd see in an inline style. I'd like to be able to do this without knowing what is contained in a particular rule, so I can't just pull them out by style name (like .style.width etc.)
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Flatten an Array of Arrays in Swift
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what's the difference between joined(formally known as flatten) with flatMap? Is it that while flatMap joins, it can also map/transform things. but here in the example we really don't need ie we return $0
– Honey
Dec 4 '16 ...
Fix warning “Capturing [an object] strongly in this block is likely to lead to a retain cycle” in AR
... to use __unsafe_unretained __block together to get the same behavior as before when using ARC and blocks.
– Hunter
Sep 6 '11 at 21:20
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Using multiple arguments for string formatting in Python (e.g., '%s … %s')
...- you need to supply a tuple.
However from Python 2.6 onwards you can use format instead of %:
'{0} in {1}'.format(unicode(self.author,'utf-8'), unicode(self.publication,'utf-8'))
Usage of % for formatting strings is no longer encouraged.
This method of string formatting is the new standard...
Using “super” in C++
...handled multiple inheritance. On the other hand, there wasn't enough bang for the buck, and the committee should handle a thornier problem.
Michael Tiemann arrived late, and then showed that a typedef'ed super would work just fine, using the same technique that was asked about in this post.
So, n...
Count how many records are in a CSV Python?
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You need to count the number of rows:
row_count = sum(1 for row in fileObject) # fileObject is your csv.reader
Using sum() with a generator expression makes for an efficient counter, avoiding storing the whole file in memory.
If you already read 2 rows to start with, then you ...