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How do you connect to multiple MySQL databases on a single webpage?
...spread out across a few databases and want to put all the information onto one webpage using PHP. I was wondering how I can connect to multiple databases on a single PHP webpage.
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Why use pointers? [closed]
...d printf to print the content of the memory address pointed to by 'a' plus one (in this example above), and we wouldn't have had to put the * in front:
printf("Second char is: %s", (a+1)); /* WRONG */
But this would not have just printed the second character, but instead all characters in the nex...
Are there any naming convention guidelines for REST APIs? [closed]
...standards for naming conventions within the API (eg: URL endpoint path components, querystring parameters)? Are camel caps the norm, or underscores? others?
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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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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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Average of 3 long integers
.../ 3
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...
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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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...
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...