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sql “LIKE” equivalent in django query
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Use __contains or __icontains (case-insensitive):
result = table.objects.filter(string__contains='pattern')
The SQL equivalent is
SELECT ... WHERE string LIKE '%pattern%';
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im...
Using Rails serialize to save hash to database
I'm try to save a hash mapping ids to a number of attempts in my rails app. My migration to the database to accommodate this new column:
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Delete sql rows where IDs do not have a match from another table
I'm trying to delete orphan entries in a mysql table.
3 Answers
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std::vector performance regression when enabling C++11
...nd an interesting performance regression in a small C++ snippet, when I enable C++11:
1 Answer
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SELECT * WHERE NOT EXISTS
I think I'm going down the right path with this one... Please bear with me as my SQL isn't the greatest
5 Answers
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Parsing JSON using Json.net
I'm trying to parse some JSON using the JSon.Net library. The documentation seems a little sparse and I'm confused as to how to accomplish what I need. Here is the format for the JSON I need to parse through.
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STL or Qt containers?
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I started by using std::(w)string and the STL containers exclusively and converting to/from the Qt equivalents, but I have already switched to QString and I find that I'm using Qt's containers more and more.
When it comes to strings, ...
Reset keys of array elements in php?
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Riz-waan
54322 silver badges1212 bronze badges
answered May 8 '12 at 5:09
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What's the rationale for null terminated strings?
As much as I love C and C++, I can't help but scratch my head at the choice of null terminated strings:
18 Answers
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Volatile vs. Interlocked vs. lock
Let's say that a class has a public int counter field that is accessed by multiple threads. This int is only incremented or decremented.
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