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How to resolve : Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core” [du
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Community♦
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answered May 13 '11 at 6:26
aceace
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Check if a value exists in pandas dataframe index
...uillaume JacquenotGuillaume Jacquenot
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Context switches much slower in new linux kernels
We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to belie...
Dismiss keyboard by touching background of UITableView
...sture recognizer object to your table view.
E.g. Perhaps in your viewDidLoad method:
UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
[self.tableView addGestureRecognizer:gestureRecognizer];
And the hideKeyboard meth...
How to make a HTTP request using Ruby on Rails?
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Martin Tournoij
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answered Jan 2 '11 at 23:29
João SilvaJoão Silva
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Does Java have a using statement?
...mplemented by streams, automagically extends AutoCloseable, so you can already use streams in a try block the same way you would use them in a C# using block. This is equivalent to C#'s using.
As of version 5.0, Hibernate Sessions implement AutoCloseable and can be auto-closed in ARM blocks. In pre...
Android WebView, how to handle redirects in app instead of opening a browser
... redirect, and when this happens the WebView will open a new browser, instead of staying in my app. Is there a way I can change the settings so the View will redirect to the URL like normal, but stay in my app instead of opening a new browser?
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Replace new lines with a comma delimiter with Notepad++?
I have a Notepad++ question.
9 Answers
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How do I concatenate two text files in PowerShell?
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Ian Kemp
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answered Jan 5 '12 at 21:23
SmiSmi
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ALTER TABLE to add a composite primary key
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ALTER TABLE provider ADD PRIMARY KEY(person,place,thing);
If a primary key already exists then you want to do this
ALTER TABLE provider DROP PRIMARY KEY, ADD PRIMARY KEY(person, place, thing);
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