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Swapping column values in MySQL
I have a MySQL table with coordinates, the column names are X and Y. Now I want to swap the column values in this table, so that X becomes Y and Y becomes X. The most apparent solution would be renaming the columns, but I don't want to make structure changes since I don't necessarily have permission...
How do I put an already-running process under nohup?
...ve a process that is already running for a long time and don't want to end it.
11 Answers
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How to fix a locale setting warning from Perl?
...produce your problem:
% uname -a
OSF1 hunter2 V5.1 2650 alpha
% perl -e exit
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the...
Volatile boolean vs AtomicBoolean
...(i) { i = temp + 5 }
}
If a variable is volatile, every atomic access to it is synchronized, but it is not always obvious what actually qualifies as an atomic access. With an Atomic* object, it is guaranteed that every method is "atomic".
Thus, if you use an AtomicInteger and getAndAdd(int delta...
How can I find an element by CSS class with XPath?
In my webpage, there's a div with a class named Test .
6 Answers
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What is a “bundle” in an Android application
What is a bundle in an Android application? When to use it?
12 Answers
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Example using Hyperlink in WPF
...application to open the link in a web browser you need to add a HyperLink with the RequestNavigate event set to a function that programmatically opens a web-browser with the address as a parameter.
<TextBlock>
<Hyperlink NavigateUri="http://www.google.com" RequestNavigate="Hy...
How do I disable the “Press ENTER or type command to continue” prompt in Vim?
...
I'm not sure how to do it globally though for one command:
:silent !<command>
Be sure to include a space after silent
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How to delete/create databases in Neo4j?
Is it possible to create/delete different databases in the graph database Neo4j like in MySQL? Or, at least, how to delete all nodes and relationships of an existing graph to get a clean setup for tests, e.g., using shell commands similar to rmrel or rm ?
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Split string into array of character strings
I need to split a String into an array of single character Strings.
11 Answers
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