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Simple way to calculate median with MySQL
...um+1 as `row_number`, @total_rows:=@rownum
FROM data d, (SELECT @rownum:=0) r
WHERE d.val is NOT NULL
-- put some where clause here
ORDER BY d.val
) as dd
WHERE dd.row_number IN ( FLOOR((@total_rows+1)/2), FLOOR((@total_rows+2)/2) );
Steve Cohen points out, that after the first pass, @rown...
Why is a pure virtual function initialized by 0?
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The reason =0 is used is that Bjarne Stroustrup didn't think he could get another keyword, such as "pure" past the C++ community at the time the feature was being implemented. This is described in his book, The Design & Evolution of ...
Most popular screen sizes/resolutions on Android phones [closed]
...ng for.
– dfetter88
Jun 7 '11 at 23:07
21
That link says nothing of how common a resolution is......
SVG Positioning
...just put the transformation in the g element:
<g transform="translate(20,2.5) rotate(10)">
<rect x="0" y="0" width="60" height="10"/>
</g>
Links: Example from the SVG 1.1 spec
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Formatting Decimal places in R
I have a number, for example 1.128347132904321674821 that I would like to show as only two decimal places when output to screen (or written to a file). How does one do that?
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Fatal error: Maximum execution time of 300 seconds exceeded
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reformed
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answered Oct 6 '11 at 21:23
TulesTules
4,7...
Split list into multiple lists with fixed number of elements
...esult to a list,
scala> List(1,2,3,4,5,6,"seven").grouped(4).toList
res0: List[List[Any]] = List(List(1, 2, 3, 4), List(5, 6, seven))
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follo...
Clicking the text to select corresponding radio button
... <label for="349">Abe</label>
<br>
<input id="350" type="radio" value="2" name="question1">
<label for="350">Andrew</label>
<br>
<input id="351" type="radio" value="3" name="question1">
<label for="351">Andre</label>
&l...
How to find out which processes are using swap space in Linux?
...
106
Run top then press OpEnter. Now processes should be sorted by their swap usage.
Here is an upd...
SQLite Reset Primary Key Field
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answered Oct 21 '09 at 16:03
Nick DandoulakisNick Dandoulakis
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