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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
... with x[numpy.ix_([0,2],[1,3])]. This can save you from having to enter in all of those extra brackets.
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The object cannot be deleted because it was not found in the ObjectStateManager
...bove worked for me since i was deleting registers from more than one class/service and each of of them was instantiating it's own database connection context.
What i did to solve it was to send the first created context to the rest of the classes/services that where going to access the database.
F...
What's the best Django search app? [closed]
...nsider letting Yahoo do all the hard work with their Build your own Search Service (BOSS). Here is a great blog post that walks you through the process:
http://www.peterkrantz.com/2008/yahoo-search-in-django/
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Cleaner way to do a null check in C#? [duplicate]
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Is this really considered cleaner?
– ClassicThunder
Jul 16 '13 at 13:35
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How to git log from all branches for the author at once?
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Python Empty Generator Function
... list(f())
[None]
Why not just use iter(())?
This question asks specifically about an empty generator function. For that reason, I take it to be a question about the internal consistency of Python's syntax, rather than a question about the best way to create an empty iterator in general.
If ques...
Count number of occurrences of a given substring in a string
..."It works because I checked it", you could include an example on an online service like repl.it with some sample data.
– Valentin
Jul 15 '17 at 15:48
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Formatting code snippets for blogging on Blogger [closed]
... I spent a couple hours on it and I can't get this to work at all.
– thepaulpage
Mar 21 '13 at 15:43
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Is there a max array length limit in C++?
...se memory is full. For example, a vector<int> of a given size n typically takes multiple times as much memory as an array of type vector<char> (minus a small constant value), since int is usually bigger than char. Therefore, a vector<char> may contain more items than a vector<in...
Is it safe to parse a /proc/ file?
.../proc/mounts was a consistent snapshot.
For example:
/proc/uptime is totally atomic, as someone mentioned in another answer -- but only since Linux 2.6.30, which is less than two years old. So even this tiny, trivial file was subject to a race condition until then, and still is in most enterpris...