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MySQL get row position in ORDER BY
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120
Use this:
SELECT x.id,
x.position,
x.name
FROM (SELECT t.id,
t...
Are negative array indexes allowed in C?
I was just reading some code and found that the person was using arr[-2] to access the 2nd element before the arr , like so:
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Circle line-segment collision detection algorithm?
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27 Answers
27
Active
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PHP best way to MD5 multi-dimensional array?
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265
(Copy-n-paste-able function at the bottom)
As mentioned prior, the following will work.
md5(...
How to get the second column from command output?
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29
Or use sed & regex.
<some_command> | sed 's/^.* \(".*"$\)/\1/'
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How to make rpm auto install dependencies
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edited Dec 14 '12 at 11:34
answered Dec 14 '12 at 11:24
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Draw a perfect circle from user's touch
...port java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.HeadlessException;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.util....
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
...t know what I've done incorrectly, but I can't include JSTL. I have jstl-1.2.jar, but unfortunately I get exception:
16 An...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
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26
Since dplyr 0.8 group_by gained the .drop argument that does just what you asked for:
df = dat...
How to detect a Christmas Tree? [closed]
... is just a simple monochrome brightness test; any pixels with values above 220 on a 0-255 scale (where black is 0 and white is 255) are saved to a binary black-and-white image. The second threshold tries to look for red and yellow lights, which are particularly prominent in the trees in the upper l...