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Hidden Features of MySQL
...SET=latin1 AUTO_INCREMENT=1
TIMESTAMPS:
Values for TIMESTAMP columns are converted from the current time zone to UTC for storage,
and from UTC to the current time zone for retrieval.
http://dev.mysql.com/doc/refman/5.1/en/timestamp.html
For one TIMESTAMP column in a table, you can assign the cur...
Group by with multiple columns using lambda
... Balance = g.Sum(x => Math.Round(Convert.ToDecimal(x.Worth), 2)),
}
);
foreach (var item in CompanyDetails)
{
Console.WriteLine(item.Typ...
Analyze audio using Fast Fourier Transform
...Ed.. It was very helpful for me.
So that is what those numbers represent. Converting to a percentage of height could be done by scaling each frequency component magnitude by the sum of all component magnitudes. Although, that would only give you a representation of the relative frequency distributi...
Simplest way to read json from a URL in java
...LConnection request = url.openConnection();
request.connect();
// Convert to a JSON object to print data
JsonParser jp = new JsonParser(); //from gson
JsonElement root = jp.parse(new InputStreamReader((InputStream) request.getContent())); //Convert the input stream to a json element...
How do I kill all the processes in Mysql “show processlist”?
...
that is a good idea. Lemme try converting that to a shell script on a cron...!
– M. Faraz
Sep 13 '13 at 7:07
5
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Positioning MKMapView to show multiple annotations at once
...es. in fact, you can simplify this even further because there's no need to convert to MKCoordinateRegion – just call setVisibleMapRect: on your MKMapView with the MKMapRect that you create here.
– lensovet
Jan 26 '13 at 9:51
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Is it possible to set a number to NaN or infinity?
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The numpy functions also work for numpy arrays and everything that can be converted to one (like lists, tuple, etc.)
There are also functions that explicitly check for positive and negative infinity in NumPy: numpy.isposinf and numpy.isneginf.
Pandas offers two additional functions to check for NaN...
How do I use reflection to call a generic method?
...f you know the return type of the function call then you should implicitly convert it to the required type so the rest of the code is statically typed:
string result = ProcessItem((dynamic)testObjects[i], "test" + i, i);
You'll get a runtime error if the type doesn't match.
Actually, if you try ...
Python set to list
How can I convert a set to a list in Python? Using
7 Answers
7
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C++ unordered_map using a custom class type as the key
...am getting the following error: Error 57 error C2440: 'type cast' : cannot convert from 'const Key' to 'size_t' c:\program files (x86)\microsoft visual studio 10.0\vc\include\xfunctional. I am guessing that the compiler is not finding my hash method? Should I be adding anything to my Key.h file?
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