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View's getWidth() and getHeight() returns 0

...e it will fire on every layout event. If you have to support apps SDK Lvl < 16 use this to unregister the listener: public void removeGlobalOnLayoutListener (ViewTreeObserver.OnGlobalLayoutListener victim) 2. Add a runnable to the layout queue: View.post() Not very well known and my favourite so...
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What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?

...ducer a (key, value) pair, output of the map phase, will be sent. The default Partitioner uses a hashing on the keys to distribute them to the reduce tasks, but you can override it and use your own custom Partitioner. A great source of information for these steps is this Yahoo tutorial. A nice gra...
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regex for matching something if it is not preceded by something else

... You want to use negative lookbehind like this: \w*(?<!foo)bar Where (?<!x) means "only if it doesn't have "x" before this point". See Regular Expressions - Lookaround for more information. Edit: added the \w* to capture the characters before (e.g. "beach"). ...
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How do you change a repository description on GitHub?

... community wiki Oleg Valter ...
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Read a zipped file as a pandas DataFrame

...on : {‘infer’, ‘gzip’, ‘bz2’, ‘zip’, ‘xz’, None}, default ‘infer’ For on-the-fly decompression of on-disk data. If ‘infer’ and filepath_or_buffer is path-like, then detect compression from the following extensions: ‘.gz’, ‘.bz2’, ‘.zip’, or ‘.xz’ (otherw...
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Is there a way for multiple processes to share a listening socket?

...ed to work out which handle needs to be duplicated by some IPC mechanism (although this could be as simple as a file in the filesystem) CLARIFICATION: In answer to the OP's original question, no, multiple processes cannot bind(); just the original parent process would call bind(), listen() etc, th...
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What's the difference between the various methods to get a Context?

...terReceiver(); } private void registerReceiver() { IntentFilter mIntentFilter = new IntentFilter(); mIntentFilter.addAction(Intent.ACTION_SCREEN_OFF); this.mBroadcastReceiver = new MyBroadcastReceiver(); this.registerReceiver(this.mBroadcastReceiver, mIntentFi...
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Docker can't connect to docker daemon

... # It's helps to get environment variables eval "$(docker-machine env default)" # Set environment variables The docker-machine start command outputs the comments to guide the process. share | impr...
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Types in Objective-C on iOS

...n on an iPhone 3GS (iPod Touch and older iPhones should yield the same result) you get: Primitive sizes: The size of a char is: 1. The size of short is: 2. The size of int is: 4. The size of long is: 4. The size of long long is: ...
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What is the difference between old style and new style classes in Python?

...lass, then x.__class__ designates the class of x, but type(x) is always <type 'instance'>. This reflects the fact that all old-style instances, independently of their class, are implemented with a single built-in type, called instance. New-style classes were introduced in Py...