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How can I convert NSDictionary to NSData and vice versa?
I am sending NSString and UIImage using bluetooth. I decided to store both in a NSDictionary and then convert the dictionary to NSData .
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How to search DOM elements using XPath or CSS selectors in Chrome Developer Tools?
...ntext) This allows you to select a particular iframe content, for example, and run an xpath query against it. So for the first iframe: myframe = document.getElementsByTagName("iframe")[0].contentWindow.document.body; #to xpath query that iframe for table cells: $x("//td",myframe);
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How do I shutdown, restart, or log off Windows via a bat file?
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The most common ways to use the shutdown command are:
shutdown -s — Shuts down.
shutdown -r — Restarts.
shutdown -l — Logs off.
shutdown -h — Hibernates.
Note: There is a common pitfall wherein users think -h means "help" (which it does for every other comman...
What does this gdb output mean?
I've got a button that plays a sound, and it seems to work perfectly fine on the simulator, but i'm getting this message:
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Chrome's remote debugging (USB debugging) not working for Samsung Galaxy S3 running android 4.3
Ever since I upgraded my Samsung Galaxy S3 to android 4.3 (from 4.1.2) I am unable to use Chrome's remote debugging for android (more details here ).
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Why would you use Oracle database? [closed]
...ho know any other db hate Oracle, those that don't assume that all DB code and/or ORM tools are difficult to use.
If I started a business that I believed was going to scale to Amazon proportions I might consider NoSQL solutions, otherwise I'd choose PostgreSQL, SQL Server (or indeed even Sybase now...
How to execute an external program from within Node.js?
...lt of the child process. Example... if the process returns an exit code 0, and I want to call a different method, I seem to run into a plethora of errors.
– continuousqa
Mar 20 '15 at 23:59
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SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)
...rror -34018. This doesn't match any of the documented keychain error codes and can't be consistently reproduced. (happens maybe 30% of the time, and it's not clear to me why it happens). What makes debugging this problem very difficult is the total lack of documentation. Any idea what causes this an...
How do I list loaded plugins in Vim?
...vimrcs loaded (super)
:verbose set history? : reveals value of history and where set
:function : list functions
:func SearchCompl : List particular function
share
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impr...
How do I view the list of functions a Linux shared library is exporting?
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What you need is nm and its -D option:
$ nm -D /usr/lib/libopenal.so.1
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00012ea0 T alcSetThreadContext
000140f0 T alcSuspendContext
U atanf
U calloc
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Exported sumbols are indicated by a T. Required symbols that mus...