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Remove carriage return in Unix

What is the simplest way to remove all the carriage returns \r from a file in Unix? 20 Answers ...
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Error: The processing instruction target matching “[xX][mM][lL]” is not allowed

...ng error The processing instruction target matching "[xX][mM][lL]" is not allowed. when an XML declaration is encountered anywhere other than at the top of an XML file. This is a valid diagnostic message; other XML parsers should issue a similar error message in this situation. To correct the p...
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Best practice? - Array/Dictionary as a Core Data Entity Attribute [closed]

...m the data store (if it's an SQLite data store) just to read or modify a small part of the collection. The alternative is to use Core Data to-many relationships to model the semantics of the array or dictionary collection. Arrays are easier, so lets start with that. Core Data to-many relationships ...
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Need to handle uncaught exception and send log file

...st: filter your activity to be recognized by your exception handler. Optionally, setup Proguard to strip out Log.d() and Log.v(). Now, here are the details: (1 & 2) Handle uncaughtException, start send log activity: public class MyApplication extends Application { public void onCreate () ...
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What does the property “Nonatomic” mean?

... Take a look at the Apple Docs. Basically, if you say nonatomic, and you generate the accessors using @synthesize, then if multiple threads try to change/read the property at once, badness can happen. You can get partially-written values or over-released/retaine...
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Jump to function definition in vim

... / is almost always not precise, as it's going to match all ocurrences. I found out you can actually do :tag <function_name> to jump to the definition via ctags. – Fuad Saud Mar 5 '14 at 20:00 ...
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Setting direction for UISwipeGestureRecognizer

...ple swipe gesture recognition to my view based iPhone project. Gestures in all directions (right, down, left, up) should be recognized. ...
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In C#, how do I calculate someone's age based on a DateTime type birthday?

... This answer does not work with all locales and all ages. Several countries have skipped dates after the birth of current living people, including Russia (1918), Greece (1924) and Turkey (1926). – Lars D Nov 9 '09 at 2...
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Rotating videos with FFmpeg

...ine). Note that this will re-encode the audio and video parts. You can usually copy the audio without touching it, by using -c:a copy. To change the video quality, set the bitrate (for example with -b:v 1M) or have a look at the H.264 encoding guide if you want VBR options. A solution is also to u...
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What is the fastest method for selecting descendant elements in jQuery?

...ce is that method 1 needs to parse the scope passed and translate it to a call to $parent.find(".child").show();. Method 4 and Method 5 both need to parse the selector and then just call: $('#parent').children().filter('.child') and $('#parent').filter('.child') respectively. So method 3 will alw...