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Why are global variables evil? [closed]
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They are essential, the screen being a good example. However, in a multithreaded environment or with many developers involved, in practice often the question arises: who did (erraneously) set or clear it? Depending on the architecture, analysis can ...
How to delete a file or folder?
...: ")
## Try to remove tree; if failed show an error using try...except on screen
try:
shutil.rmtree(mydir)
except OSError as e:
print ("Error: %s - %s." % (e.filename, e.strerror))
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Is there still any reason to learn AWK?
...(s ", " $1);}
/<tr|<TR/ { print s; s="" }
Which is great if you're screen scraping. Actually, it might be the case that I love AWK because it allows me to build the wrong solution to problems so quickly :) more examples. It's also mentioned in Jon Bentley's lovely Programming Pearls.
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Recommendation for compressing JPG files with ImageMagick
...filesize 753 kB
Resolution 2048x2048
and I can't see any changes in full screen with my 1920x1080 resolution monitor. 2048 resolution is the best for developing 10 cm photos at maximum quality of 360 dpi. I don't want to strip it.
edit: I noticed that I even get much better results without blurri...
android asynctask sending callbacks to ui [duplicate]
...eference to your Activity, it will stay in memory even after user left the screen (or rotated the device).
AsyncTask is not delivering result to Activity if Activity was already destroyed. You have to add extra code to manage all this stuff or do you operations twice.
Convoluted code which does ever...
How to run a Runnable thread in Android at defined intervals?
...lication to display some text at defined intervals in the Android emulator screen. I am using the Handler class. Here is a snippet from my code:
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Can Powershell Run Commands in Parallel?
... @SteveTownsend Thanks ! Actually viewing output is a not so good on screen. Comes with delay, so not useful for me. Instead I started a process on new terminal (shell), so now each process is running on different terminal which gives the view of progress much better and much cleaner.
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Why does Oracle 9i treat an empty string as NULL?
...se corresponded to a field in a form that a data entry operator saw on his screen. If the operator didn't type anything into a field, whether that's "birthdate" or "address" then the data for that field is "unknown". There's no way for an operator to indicate that someone's address is really an empt...
Handling Dialogs in WPF with MVVM
... that has its own ViewModel and it is shown from the ViewModel of the main screen but triggered from the UI via DelagateCommand binding.
See full Silverlight 4 solution here Modal dialogs with MVVM and Silverlight 4
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Force drop mysql bypassing foreign key constraint
...h constraint,solution already explained in the above comment, i just added screen shot for that -
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