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What does the NS prefix mean?

Many classes in Cocoa/Cocoa Touch have the NS prefix. What does it mean? 9 Answers 9 ...
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WPF: Setting the Width (and Height) as a Percentage Value

Say I want a TextBlock to have its Width equal to it's Parent container's Width (ie, stretch from side to side) or a percentage of it's Parent Container Width , how can I accomplish this in XAML without specifying absolute values? ...
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Converting array to list in Java

How do I convert an array to a list in Java? 19 Answers 19 ...
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How to convert a table to a data frame

I have a table in R that has str() of this: 5 Answers 5 ...
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PDOException “could not find driver”

I have just installed Debian Lenny with Apache, MySQL, and PHP and I am receiving a PDOException could not find driver . 3...
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ETag vs Header Expires

I've looked around but haven't been able to figure out if I should use both an ETag and an Expires Header or one or the other. ...
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Why does this go into an infinite loop?

I have the following code: 26 Answers 26 ...
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How to view file diff in git before commit

This often happens to me: 9 Answers 9 ...
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git undo all uncommitted or unsaved changes

I'm trying to undo all changes since my last commit. I tried git reset --hard and git reset --hard HEAD after viewing this post . I responds with head is now at 18c3773... but when I look at my local source all the files are still there. What am I missing? ...
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Add timestamps to an existing table

I need to add timestamps ( created_at & updated_at ) to an existing table. I tried the following code but it didn't work. ...