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Creating a new directory in C

I want to write a program that checks for the existence of a directory; if that directory does not exist then it creates the directory and a log file inside of it, but if the directory already exists, then it just creates a new log file in that folder. ...
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UIDevice uniqueIdentifier deprecated - What to do now?

It has just come to light that the UIDevice uniqueIdentifier property is deprecated in iOS 5 and unavailable in iOS 7 and above. No alternative method or property appears to be available or forthcoming. ...
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Programmatically Request Access to Contacts

Since updating to iOS 6 I've noticed that my code to add a contact to iPhone's address book no longer works. I believe this is a permission related problem, since Apple now requires user permission before accessing contacts (fixing this issue). ...
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ggplot2 plot without axes, legends, etc

I want to use bioconductor's hexbin (which I can do) to generate a plot that fills the entire (png) display region - no axes, no labels, no background, no nuthin'. ...
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How to get process ID of background process?

I start a background process from my shell script, and I would like to kill this process when my script finishes. 7 Answers...
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How do you print out a stack trace to the console/log in Cocoa?

I'd like to log the call trace during certain points, like failed assertions, or uncaught exceptions. 6 Answers ...
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Can't connect to local MySQL server through socket '/tmp/mysql.sock

When I attempted to connect to a local MySQL server during my test suite, it fails with the error: 32 Answers ...
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examining history of deleted file

If I delete a file in Subversion, how can I look at it's history and contents? If I try to do svn cat or svn log on a nonexistent file, it complains that the file doesn't exist. ...
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Emulate a do-while loop in Python?

I need to emulate a do-while loop in a Python program. Unfortunately, the following straightforward code does not work: 16 ...
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How to tell where a header file is included from?

How can I tell where g++ was able to find an include file? Basically if I 4 Answers 4...