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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
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.htaccess - how to force “www.” in a generic way?
...%{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
The first condition checks whether the Host value is not empty (in case of HTTP/1.0); the second checks whether the the Host value does not begin with www.; the third checks for HTTPS (%{HTTPS} is either on or off, s...
Android: set view style programmatically
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How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
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When would you use .git/info/exclude instead of .gitignore to exclude files?
...ore in your comment above. My understanding is that ignore rules can be at 3 levels - $PROJECT/.git/info/exclude for (project, user) specific ignore rules, $PROJECT/<any number of directories>/.gitignore which is for project specific ignore rules across any user anywhere (when checked in), ~/...
cancelling queued performSelector:afterDelay calls
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Tim
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answered Nov 27 '09 at 2:40
stefanBstefanB
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python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
...]: df.drop_duplicates(subset='A', keep="last")
Out[10]:
A B
1 1 20
3 2 40
4 3 10
You can do also something like:
In [12]: df.groupby('A', group_keys=False).apply(lambda x: x.loc[x.B.idxmax()])
Out[12]:
A B
A
1 1 20
2 2 40
3 3 10
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Select between two dates with Django
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Use the __range operator:
...filter(current_issue__isnull=True, created_at__range=(start_date,...
Convert a list to a dictionary in Python
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from itertools import izip
i = iter(a)
b = dict(izip(i, i))
In Python 3 you could also use a dict comprehension, but ironically I think the simplest way to do it will be with range() and len(), which would normally be a code smell.
b = {a[i]: a[i+1] for i in range(0, len(a), 2)}
So the iter(...
Post JSON using Python Requests
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As of Requests version 2.4.2 and onwards, you can alternatively use 'json' parameter in the call...