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Linux command or script counting duplicated lines in a text file?
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answered Jun 22 '11 at 22:55
borribleborrible
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What is memory fragmentation?
...emory fragmentation" used a few times in the context of C++ dynamic memory allocation. I've found some questions about how to deal with memory fragmentation, but can't find a direct question that deals with it itself. So:
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How to change Elasticsearch max memory size
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I can confirm this works for aws ami instance (installed with RPM), but first set MAX_LOCKED_MEMORY=unlimited in /etc/sysconfig/elasticsearch and bootstrap.memory_lock: true in /etc/elasticsearch/elasticsearch.yml
– mork
May 4 '17 at 16:...
Difference between Django's annotate and aggregate methods?
...rage_price': 34.35}
Returns a dictionary containing the average price of all books in the queryset.
Annotation
>>> q = Book.objects.annotate(num_authors=Count('authors'))
>>> q[0].num_authors
2
>>> q[1].num_authors
1
q is the queryset of books, but each book has been...
What is mattr_accessor in a Rails module?
I couldn't really find this in Rails documentation but it seems like 'mattr_accessor' is the Module corollary for 'attr_accessor' (getter & setter) in a normal Ruby class .
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Passport.js - Error: failed to serialize user into session
...d serializing user information but only id's (for bloat/perf reasons personally).
– electblake
Jan 22 '16 at 20:03
2
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.NET: Simplest way to send POST with data and read response
...d reference RFC2616 (w3.org/Protocols/rfc2616/rfc2616.txt). Answers from jball and BFree follow that attempt.
– Chris Hutchinson
Nov 3 '10 at 15:30
9
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How to get last items of a list in Python?
... python CLI interpreter:
>>> a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a[-9:]
[4, 5, 6, 7, 8, 9, 10, 11, 12]
the important line is a[-9:]
shar...
How can you dynamically create variables via a while loop? [duplicate]
I want to create variables dynamically via a while loop in Python. Does anyone have any creative means of doing this?
8 Ans...
Notification click: activity already open
...current task, then instead of launching a new instance of that
activity, all of the other activities on top of it will be closed and
this Intent will be delivered to the (now on top) old activity as a
new Intent.
For example, consider a task consisting of the activities: A, B, C, D.
If...