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Prevent user from seeing previously visited secured page after logout
...; // HTTP 1.1.
response.setHeader("Pragma", "no-cache"); // HTTP 1.0.
response.setDateHeader("Expires", 0); // Proxies.
chain.doFilter(req, res);
}
// ...
}
Map this Filter on an url-pattern of interest, for example *.jsp.
@WebFilter("*.jsp")
Or if you want to ...
Get Output From the logging Module in IPython Notebook
... This does not work any more. Not with the Jupyter Notebook 5.3.0
– Wesam
Apr 27 '18 at 5:17
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C# Iterating through an enum? (Indexing a System.Array)
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204
Array values = Enum.GetValues(typeof(myEnum));
foreach( MyEnum val in values )
{
Console.Wr...
Remove the complete styling of an HTML button/submit
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edited Nov 5 '18 at 15:50
answered Mar 17 '10 at 12:13
a ...
Print “hello world” every X seconds
...any other method
Timer timer = new Timer();
timer.schedule(new SayHello(), 0, 5000);
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Calculating days between two dates with Java
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UPDATE: The original answer from 2013 is now outdated because some of the classes have been replaced. The new way of doing this is using the new java.time classes.
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd MM yyyy");
String inputString1 = "23 0...
pandas GroupBy columns with NaN (missing) values
...ore doing the groupby (e.g. -1):
In [11]: df.fillna(-1)
Out[11]:
a b
0 1 4
1 2 -1
2 3 6
In [12]: df.fillna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this g...
Calculating Distance between two Latitude and Longitude GeoCoordinates
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Nigel SampsonNigel Sampson
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Color Tint UIButton Image
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edited Mar 1 '17 at 4:08
answered Jul 27 '14 at 9:21
Ri...
How does this code generate the map of India?
...equence converted to ASCII. The first for statement makes b start out at 10, and the [b+++21] after the string yields 31. Treating the string as an array, offset 31 is the start of the "real" data in the string (the second line in the code sample you provided). The rest of the code simply loops t...