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How do I migrate a model out of one django app and into a new one?
...n:
# For permissions to work properly after migrating
orm['contenttypes.contenttype'].objects.filter(
app_label='common',
model='cat',
).update(app_label='specific')
def backwards(self, orm):
db.rename_table('specific_cat', 'common_cat')
if n...
ActiveRecord: size vs count
In Rails, you can find the number of records using both Model.size and Model.count . If you're dealing with more complm>ex m> queries is there any advantage to using one method over the other? How are they different?
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Error: Can't set headers after they are sent to the client
...harset = 'utf-8' (m>Ex m>press only; only affects m>Ex m>press-specific methods)
res.contentType(type) (m>Ex m>press only)
Response must be in Head and becomes Body:
res.writeHead(statusCode, [reasonPhrase], [headers])
Response can be in either Head/Body and remains in Body:
res.write(chunk, encoding='utf8')
...
How to replace a hash key with another key
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answered Oct 10 '13 at 14:22
gayavatgayavat
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Converting JSON String to Dictionary Not List
I am trying to pass in a JSON file and convert the data into a dictionary.
6 Answers
6...
Center image horizontally within a div
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CSS flm>ex m>box can do it with justify-content: center on the image parent element. To preserve the aspect ratio of the image, add align-self: flm>ex m>-start; to it.
HTML
<div class="image-container">
<img src="http://placehold.it/100x100" />
</div&...
Using awk to remove the Byte-order mark
How would an awk script (presumably a one-liner) for removing a BOM look like?
5 Answers
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Windows recursive grep command-line
I need to do a recursive grep in Windows, something like this in Unix/Linux:
8 Answers
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Efficient way to apply multiple filters to pandas DataFrame or Series
... a scenario where a user wants to apply several filters to a Pandas DataFrame or Series object. Essentially, I want to efficiently chain a bunch of filtering (comparison operations) together that are specified at run-time by the user.
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Does the JVM prevent tail call optimizations?
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This post: Recursion or Iteration? might help.
In short, tail call optimization is hard to do in the JVM because of the security model and the need to always have a stack trace available. These requirements could in theory be supported, but it would probably ...