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Delete all files in directory (but not directory) - one liner solution
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import org.apache.commons.io.FileUtils;
FileUtils.cleanDirectory(directory);
There is this method available in the same file. This will also recursively deletes all sub-folders and files under them.
Docs: org.apache.commons.io.FileUtils.cleanDirectory
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iOS: Use a boolean in NSUserDefaults
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You can set your boolean by using:
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"logged_in"];
[[NSUserDefaults standardUserDefaults] synchronize];
and read it by using this code:
if(![[NSUserDefaults standardUserDefaults] boolForKey:@"logged_in"]) {
[self d...
cancelling a handler.postdelayed process
I am using handler.postDelayed() to create a waiting period before the next stage of my app takes place. During the wait period I am displaying a dialog with progress bar and cancel button.
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How do I handle the window close event in Tkinter?
How do I handle the window close event (user clicking the 'X' button) in a Python Tkinter program?
6 Answers
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Why can I access private variables in the copy constructor?
...eiterating what behaviour's valid. "access modifiers work on class level, and not on object level." - yes, but why?
The overarching concept here is that it's the programmer(s) designing, writing and maintaining a class who is(are) expected to understand the OO encapsulation desired and empowered t...
How to debug a Flask app
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Running the app in development mode will show an interactive traceback and console in the browser when there is an error. To run in development mode, set the FLASK_ENV=development environment variable then use the flask run command (remember to point FLASK_APP to your app as well).
For Linux, M...
Windows batch: sleep [duplicate]
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Haha, so simple and yet so genius :-) Exactly what I was looking for. +1
– Simon
Apr 13 '12 at 21:19
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How to create a new database after initally installing oracle database 11g Express Edition?
I have installed Oracle Database 11g Express Edition on my pc (windows 7)
and I have installed Oracle SQL Developer as well.
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About catching ANY exception
...ght it!"
However, this will also catch exceptions like KeyboardInterrupt and you usually don't want that, do you? Unless you re-raise the exception right away - see the following example from the docs:
try:
f = open('myfile.txt')
s = f.readline()
i = int(s.strip())
except IOError as (...
“’” showing on page instead of “ ' ”
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Ensure the browser and editor are using UTF-8 encoding instead of ISO-8859-1/Windows-1252.
Or use ’.
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