大约有 5,213 项符合查询结果（耗时：0.0160秒） [XML]
How to remove convexity defects in a Sudoku square?
... Sudoku from an input image using OpenCV (as in Google goggles etc). And I have completed the task, but at the end I found a little problem for which I came here.
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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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How do I base64 encode (decode) in C?
I have binary data in an unsigned char variable.
I need to convert them to PEM base64 in c.
I looked in openssl library but i could not find any function.
Does any body have any idea?
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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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Total size of the contents of all the files in a directory [closed]
When I use ls or du , I get the amount of disk space each file is occupying.
12 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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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
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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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