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How to add images in select list?
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180
In Firefox you can just add background image to option:
<select>
<option style="back...
Variable's scope in a switch case [duplicate]
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answered Oct 8 '10 at 20:49
Richard CookRichard Cook
28.8k44 gold badges4242 silver badges6767 bronze badges
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Is string in array?
...is something that I am overlooking. The array size will be no larger than 200 elements.
10 Answers
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Calculating arithmetic mean (one type of average) in Python
...x(len(numbers), 1)
>>> mean([1,2,3,4])
2.5
>>> mean([])
0.0
In numpy, there's numpy.mean().
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How to serialize an object to XML without getting xmlns=“…”?
..., _
sr As New StreamReader(ms)
xs.Serialize(sw, obj, ns)
ms.Position = 0
Console.WriteLine(sr.ReadToEnd())
End Using
in C# like this:
//Create our own namespaces for the output
XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
//Add an empty namespace and empty value
ns.Add("", "")...
How do I determine if my python shell is executing in 32bit or 64bit?
... /usr/bin/python2.6 -c 'import sys,platform; print platform.architecture()[0], sys.maxsize > 2**32'
64bit True
$ arch -i386 /usr/bin/python2.6 -c 'import sys,platform; print platform.architecture()[0], sys.maxsize > 2**32'
64bit False
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pull out p-values and r-squared from a linear regression
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attributes(p) <- NULL
return(p)
}
> lmp(fit)
[1] 1.622665e-05
In the case of a simple regression with one predictor, the model p-value and the p-value for the coefficient will be the same.
Coefficient p-values: If you have more than one predictor, then the above will return the m...
Convert Unix timestamp to a date string
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With GNU's date you can do:
date -d "@$TIMESTAMP"
# date -d @0
Wed Dec 31 19:00:00 EST 1969
(From: BASH: Convert Unix Timestamp to a Date)
On OS X, use date -r.
date -r "$TIMESTAMP"
Alternatively, use strftime(). It's not available directly from the shell, but you can access it v...
How do I prevent Android taking a screenshot when my app goes to the background?
...PDATE: it also secures against Now On Tap or other assistants on Android 6.0; they will not get access to the details of widgets and containers in your UI if the user brings up the assistant.
UPDATE #2: however, not everything in the activity will be protected. Any pop-up windows — Dialog, Spinne...
iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...11行，那么程序就会停在11行（注意：程序只运行到了前10行，第11行其实还没有被执行！！！）。只要在代码行旁边点击，就能添加一个断点，再次点击，就能让断点不可用（disable了，仍然存在，只是不起作用了）。在某一行创...