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mongodb: insert if not exists
...e() call: {upsert:true}. For example:
key = {'key':'value'}
data = {'key2':'value2', 'key3':'value3'};
coll.update(key, data, upsert=True); #In python upsert must be passed as a keyword argument
This replaces your if-find-else-update block entirely. It will insert if the key doesn't exist and ...
Sequence-zip function for c++11?
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Warning: boost::zip_iterator and boost::combine as of Boost 1.63.0 (2016 Dec 26) will cause undefined behavior if the length of the input containers are not the same (it may crash or iterate beyond the end).
Starting from Boost 1.56.0 (2014 Aug 7) you could use boost::combine (the function...
How to split a comma-separated value to columns
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How to negate the whole regex?
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102
Use negative lookaround: (?!pattern)
Positive lookarounds can be used to assert that a pattern ...
What does the brk() system call do?
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In the diagram you posted, the "break"—the address manipulated by brk and sbrk—is the dott...
NPM - How to fix “No readme data”
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Simply adding a README.md file will not fix it, you should write something inside it; at least...
sed beginner: changing all occurrences in a folder
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edited May 25 '09 at 3:13
answered May 25 '09 at 2:51
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How to get sp_executesql result into a variable?
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254
If you have OUTPUT parameters you can do
DECLARE @retval int
DECLARE @sSQL nvarchar(500);
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How to optimize imports automatically after each save in IntelliJ IDEA
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answered Jul 28 '12 at 20:36
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