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“On-line” (iterator) algorithms for estimating statistical median, mode, skewness, kurtosis?
...many data points you have, in theory you only have to partially sort, e.g. by using a selection algorithm. However, that doesn't help too much with billions of values. I would suggest using frequency counts, see the next section.
Median and Mode with Frequency Counts
If it is integers, I would cou...
How to get the contents of a webpage in a shell variable?
...ld read all man pages for those commands. And don't forget to replace $url by your URL :)
Good luck :)
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Font scaling based on width of container
... container is not the viewport (body)?
This question is asked in a comment by Alex under the accepted answer.
That fact does not mean vw cannot be used to some extent to size for that container. Now to see any variation at all one has to be assuming that the container in some way is flexible in size...
How to drop columns using Rails migration
...olumn :table_name, :column_name
For instance:
remove_column :users, :hobby
would remove the hobby Column from the users table.
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How do I get git to default to ssh and not https for new repositories
...stead of HTTPS when connecting to GitHub/BitBucket, so you'll authenticate by certificate by default, instead of being prompted for a password.
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Maven-like dependency management for C++? [closed]
... main project, is there a way to avoid having to build all the subprojects by myself?
12 Answers
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PG::ConnectionBad - could not connect to server: Connection refused
...s postgres didn't delete the PID (process id) file.
The PID file is used by postgres to make sure only one instance of the server is running at a time. So when it goes to start again, it fails because there is already a PID file which tells postgres that another instance of the server was started ...
Strings are objects in Java, so why don't we use 'new' to create them?
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By using String a = new String("abcd"), does it means two string with similar content are present in memory.
– changed
Jan 5 '10 at 21:54
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How to set up fixed width for ?
...refer this but it seems not affect to my case, the column width not extend by col-md-*
– Osify
Jul 30 '15 at 8:06
I li...
How do ACID and database transactions work?
...were executing sequentially, and if one needs to read data that is written by another, it will have to wait until the other is finished.
Durability means that once a transaction is complete, it is guaranteed that all of the changes have been recorded to a durable medium (such as a hard disk), and t...