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Why should I learn Lisp? [closed]
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One of the main uses for Lisp is in Artificial Intelligence. A friend of mine at college took a graduate AI course and for his main project he wrote a "Lights Out" solver in Lisp. Multiple versions of his program utilized sl...
Why should I prefer to use member initialization lists?
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Apart from the performance reasons mentioned above, if your class stores references to objects passed as constructor parameters or your class has const variables then you don't have any choice except using initializer lists.
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Average of 3 long integers
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Note that the above sample does not always work properly when having one or more negative values.
As discussed with Ulugbek, since the number of comments are exploding below, here is the current BEST solution for both positive and negative values.
Thanks to answers and comments of Ulugbek Um...
Is it possible to run one logrotate check manually?
Is it possible to run one iteration of logrotate manually without scheduling it on some interval?
8 Answers
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Can I have multiple primary keys in a single table?
...as, but I came here looking to see if I could uniquely identify a row with one of a set of keys. For instance, I would like to identify a unique user with either a username OR a userid, without needing both. I guess RB's answer of unique indexes would do the trick there.
– Burr...
Which machine learning classifier to choose, in general? [closed]
...ion Approach
There are different algorithms within each approach mentioned above. The choice of a particular algorithm depends upon the size of the dataset.
Source: http://scikit-learn.org/stable/tutorial/machine_learning_map/
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Definition of “downstream” and “upstream”
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In terms of source control, you're "downstream" when you copy (clone, checkout, etc) from a repository. Information flowed "downstream" to you.
When you make changes, you usually want to send them back "upstream" so they make it into that repository so that everyone pulling from the same ...
What are the performance characteristics of sqlite with very large database files? [closed]
...Single Table
I tried to insert multiple rows into a sqlite file with just one table. When the file was about 7GB (sorry I can't be specific about row counts) insertions were taking far too long. I had estimated that my test to insert all my data would take 24 hours or so, but it did not complete ev...
Remove an entire column from a data.frame in R
Does anyone know how to remove an entire column from a data.frame in R? For example if I am given this data.frame:
6 Answer...
Catch multiple exceptions at once?
...n ex) when (ex is ... || ex is ... )
Except that I still kind of hate the one-long-line layout and would personally lay the code out like the following. I think this is as functional as it is aesthetic, since I believe it improves comprehension. Some may disagree:
catch (Exception ex) when (
e...