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Mongoose (mongodb) batch insert?
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Don't you mean {type:'jellybean'} instead of {type:'jelly bean'}? Btw. what strange types are those? Are they part of Mongoose API?
– Steve K
Sep 17 '14 at 14:56
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How can I extend typed Arrays in Swift?
...s a placeholder for the contained type. For example: var myArray = [Foo]() means that myArray will only contain type Foo. Foo in this case is "mapped" to the generic placeholder Element. If you want to change the general behavior of Array (via extension) you would use the generic placeholder Element...
Why are joins bad when considering scalability?
... surrogate key (autonumer/identity column) rather than a natural key. This means smaller (and therefore faster) comparisons during the join operation
Indexes
Materialized/indexed views (think of this as a pre-computed join or managed de-normalization)
Computed columns. You can use this to hash or ot...
Difference between a “coroutine” and a “thread”?
...ely scheduled by the operating system, coroutine switches are cooperative, meaning the programmer (and possibly the programming language and its runtime) controls when a switch will happen.
In contrast to threads, which are pre-emptive, coroutine switches are
cooperative (programmer controls ...
Removing the fragment identifier from AngularJS urls (# symbol)
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@powtac IE lt 10 means Internet Explorer less then version 10
– Maxim Grach
Aug 6 '13 at 18:26
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What is a magic number, and why is it bad? [closed]
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Just because a magic number will never change doesn't mean it shouldn't be replaced by a constant. My code is full of global constants like HzPerMHz and msecPerSecond. These will never change, but they make the meaning clearer, and provide some protection against typos.
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Insert into … values ( SELECT … FROM … )
...) - note that the paranthesis around the select statement are required ({} meaning optional)
– zapl
Jul 3 '18 at 18:06
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how to get html content from a webview?
...e is much older than my own answer and would probably work for you. Didn't mean anything beyond that. Very glad that you found the answer by looking elsewhere BTW.
– Akash Kurian Jose
Jun 9 at 23:39
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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
...eed:
df[['col1', 'col2', 'col3', 'col4']].groupby(['col1', 'col2']).agg(['mean', 'count'])
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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
8 Answers
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