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How do I compute derivative using Numpy?
How do I calculate the derivative of a function, for example
8 Answers
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Can Android do peer-to-peer ad-hoc networking?
Is it possible to set up Android in ad-hoc peer-to-peer wifi mode? For example, I would like to have one phone broadcast a message, and have all peers in the network receive the broadcast, without having a server. I would like to use wifi since bluetooth range is more limited.
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What Vim command(s) can be used to quote/unquote words?
...nge quoting (e.g. from ' to " ) in Vim? I know about the surround.vim plugin, but I would like to use just Vim.
16 An...
How to pause a YouTube player when hiding the iframe?
...licks on a link, this div becomes visible, the user should then be able to play the video.
14 Answers
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linq query to return distinct field values from a list of objects
Assume there is list with 100 elements of obj, but only 10 unique typeIDs.
Is it possible to do write a LINQ query return the 10 unique ints from the list of objs?
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How to duplicate a whole line in Vim?
How do I duplicate a whole line in Vim in a similar way to Ctrl + D in IntelliJ IDEA/ Resharper or Ctrl + Alt + ↑ / ↓ in Eclipse ?
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How to query as GROUP BY in django?
... you can use the aggregation features of the ORM:
from django.db.models import Count
Members.objects.values('designation').annotate(dcount=Count('designation'))
This results in a query similar to
SELECT designation, COUNT(designation) AS dcount
FROM members GROUP BY designation
and the output ...
Keyboard Interrupts with python's multiprocessing Pool
How can I handle KeyboardInterrupt events with python's multiprocessing Pools? Here is a simple example:
10 Answers
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Ruby: Can I write multi-line string with no concatenation?
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There are pieces to this answer that helped me get what I needed (easy multi-line concatenation WITHOUT extra whitespace), but since none of the actual answers had it, I'm compiling them here:
str = 'this is a multi-line string'\
' ...
How can I use “sizeof” in a preprocessor macro?
Is there any way to use a sizeof in a preprocessor macro?
13 Answers
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