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How to delete a folder with files using Java

I want to create and delete a directory using Java, but it isn't working. 25 Answers 2...
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Remove all the elements that occur in one list from another

Let's say I have two lists, l1 and l2 . I want to perform l1 - l2 , which returns all elements of l1 not in l2 . 7 ...
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Python add item to the tuple

I have some object.ID-s which I try to store in the user session as tuple. When I add first one it works but tuple looks like (u'2',) but when I try to add new one using mytuple = mytuple + new.id got error can only concatenate tuple (not "unicode") to tuple . ...
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Set markers for individual points on a line in Matplotlib

I have used Matplotlib to plot lines on a figure. Now I would now like to set the style, specifically the marker, for individual points on the line. How do I do this? ...
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android fragment- How to save states of views in a fragment when another fragment is pushed on top o

In android, a fragment (say FragA ) gets added to the backstack and another fragment (say FragB ) comes to the top. Now on hitting back FragA comes to the top and the onCreateView() is called. Now I had FragA in a particular state before FragB got pushed on top of it. ...
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Get properties and values from unknown object

From the world of PHP I have decided to give C# a go. I've had a search but can't seem to find the answer of how to do the equivalent to this. ...
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cscope or ctags why choose one over the other? [closed]

I primarily use vim / gvim as an editor and am looking at using a combination of lxr (the Linux Cross Reference) and either cscope or ctags for exploring the kernel source. However, I haven't ever used either cscope or ctags and would like to hear why one might choose one over the other t...
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What is your most productive shortcut with Vim?

I've heard a lot about Vim , both pros and cons. It really seems you should be (as a developer) faster with Vim than with any other editor. I'm using Vim to do some basic stuff and I'm at best 10 times less productive with Vim. ...
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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]

I've seen Bash scripts test for a non-zero length string in two different ways. Most scripts use the -n option: 6 Answers...
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Redis strings vs Redis hashes to represent JSON: efficiency?

I want to store a JSON payload into redis. There's really 2 ways I can do this: 3 Answers ...