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In Unix, how do you remove everything in the current directory and below it?
I know this will delete everything in a subdirectory and below it:
10 Answers
10
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Getting the current Fragment instance in the viewpager
Below is my code which has 3 Fragment classes each embedded with each of the 3 tabs on ViewPager . I have a menu option. As shown in the onOptionsItemSelected() , by selecting an option, I need to update the fragment that is currently visible. To update that I have to call a method which is in t...
Android: Go back to previous activity
I want to do something simple on android app.
How is it possible to go back to a previous activity.
23 Answers
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...butter :and :jelly
0 1 2 3 4
4 is still within the array, just barely; if you request 0 elements, you get the empty end of the array. But there is no index 5, so you can't slice from there.
When you do index (like array[4]), you are pointing at elements themselves,...
How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
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If I understand the question correctly, you want to update a document with the contents of another document, but only the fields that are not already present, and completely ignore the fields that are already set (even if to another value).
There is no way to do that in a single command.
You h...
Source code highlighting in LaTeX
...ckage listings seems to be the best choice for most use-cases and for me it was, until now.
3 Answers
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Can I 'git commit' a file and ignore its content changes?
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Sure, I do exactly this from time to time using
git update-index --assume-unchanged [<file> ...]
To undo and start tracking again (if you forgot what files were untracked, see this question):
git update-index --no-assume-unchanged [<file> ...]
Relevant documen...
throws Exception in finally blocks
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I usually do it like this:
try {
// Use the resource.
} catch( Exception ex ) {
// Problem with the resource.
} finally {
// Put away the resource.
closeQuietly( resource );
}
Elsewhere:
protected void closeQuietly( Resource r...
How do short URLs services work?
... TinyURL or Metamark work?
Do they simply associate the tiny URL key with a [virtual?] web page which merely provide an "HTTP redirect" to the original URL? or is there more "magic" to it ?
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How to create a file in memory for user to download, but not through server?
... can create a text file on the client side and prompt the user to download it, without any interaction with the server?
I know I can't write directly to their machine (security and all), but can I create and prompt them to save it?
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