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Why this line xmlns:android=“http://schemas.android.com/apk/res/android” must be the first in the la

Why is this line needed in xml layout file? 12 Answers 12 ...
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Why does comparing strings using either '==' or 'is' sometimes produce a different result?

I've got a Python program where two variables are set to the value 'public' . In a conditional expression I have the comparison var1 is var2 which fails, but if I change it to var1 == var2 it returns True . ...
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How to overload __init__ method based on argument type?

Let's say I have a class that has a member called data which is a list. 10 Answers 1...
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Find an item in List by LINQ?

Here I have a simple example to find an item in a list of strings. Normally I use for loop or anonymous delegate to do it like this: ...
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What is the Swift equivalent of respondsToSelector?

I've googled but not been able to find out what the swift equivalent to respondsToSelector: is. 17 Answers ...
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Recommended website resolution (width and height)? [closed]

Is there any standard on common website resolution? 23 Answers 23 ...
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How to prevent browser to invoke basic auth popup and handle 401 error using Jquery?

I need to send authorization request using basic auth. I have successfully implemented this using jquery. However when I get 401 error basic auth browser popup is opened and jquery ajax error callback is not called. ...
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Must JDBC Resultsets and Statements be closed separately although the Connection is closed afterward

It is said to be a good habit to close all JDBC resources after usage. But if I have the following code, is it necessary to close the Resultset and the Statement? ...
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When restoring a backup, how do I disconnect all active connections?

My SQL Server 2005 doesn't restore a backup because of active connections. How can I force it? 10 Answers ...
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How can I implement a tree in Python?

I am trying to construct a General tree. 17 Answers 17 ...