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How do you change Background for a Button MouseOver in WPF?
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edited Apr 22 '16 at 11:09
Drew Noakes
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Is “double hashing” a password less secure than just hashing it once?
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270
Hashing a password once is insecure
No, multiple hashes are not less secure; they are an essent...
What does the Ellipsis object do?
... object that can appear in slice notation. For example:
myList[1:2, ..., 0]
Its interpretation is purely up to whatever implements the __getitem__ function and sees Ellipsis objects there, but its main (and intended) use is in the numpy third-party library, which adds a multidimensional array ty...
How do I obtain the frequencies of each value in an FFT?
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The first bin in the FFT is DC (0 Hz), the second bin is Fs / N, where Fs is the sample rate and N is the size of the FFT. The next bin is 2 * Fs / N. To express this in general terms, the nth bin is n * Fs / N.
So if your sample rate, Fs is say 44.1 kHz a...
How can I see the request headers made by curl when sending a request to the server?
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510
I think curl -v is the easiest. It will spit out the request headers (lines prefixed with '>'...
Weak and strong property setter attributes in Objective-C
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102
You either have ARC on or off for a particular file. If its on you cannot use retain release a...
Speed up the loop operation in R
... accumulates something. (simple operation). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the runtime.
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How to position a table at the center of div horizontally & vertically
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280
Centering is one of the biggest issues in CSS. However, some tricks exist:
To center your table...
How to have an auto incrementing version number (Visual Studio)? [duplicate]
...bute to end with an asterisk, for example:
[assembly: AssemblyVersion("2.10.*")]
Visual studio will increment the final number for you according to these rules (thanks galets, I had that completely wrong!)
To reference this version in code, so you can display it to the user, you use reflection. ...
Using multiple arguments for string formatting in Python (e.g., '%s … %s')
...uple.
However from Python 2.6 onwards you can use format instead of %:
'{0} in {1}'.format(unicode(self.author,'utf-8'), unicode(self.publication,'utf-8'))
Usage of % for formatting strings is no longer encouraged.
This method of string formatting is the new standard in Python 3.0, and shou...