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How do I create a file and write to it in Java?

...te that each of the code samples below may throw IOException. Try/catch/finally blocks have been omitted for brevity. See this tutorial for information about exception handling. Note that each of the code samples below will overwrite the file if it already exists Creating a text file: PrintWriter...
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Rolling or sliding window iterator?

...nder why the default window size should be 2? Should it have a default at all? – SingleNegationElimination Jul 25 '11 at 22:02 19 ...
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overlay two images in android to set an imageview

...XML then simply set the image, or you can configure a LayerDrawable dynamically in code. Solution #1 (via XML): Create a new Drawable XML file, let's call it layer.xml: <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@drawable/t" /> ...
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UICollectionView inside a UITableViewCell — dynamic height?

...mic number of items, resulting in a height which must be calculated dynamically as well. However, I am running into problems trying to calculate the height of the embedded UICollectionView . ...
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Lambda function in list comprehensions

... The first one creates a single lambda function and calls it ten times. The second one doesn't call the function. It creates 10 different lambda functions. It puts all of those in a list. To make it equivalent to the first you need: [(lambda x: x*x)(x) for x in range(10)] Or b...
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what is the best way to convert a json formatted key value pair to ruby hash with symbol as key?

... string key } } Method 1: JSON.parse - symbolizes all keys recursively => Does not preserve original mix JSON.parse( h.to_json, {:symbolize_names => true} ) => { :youtube => { :search=> "daffy", :history => ["goofy", "mickey"] } } Method 2: ActiveSup...
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How to check for DLL dependency?

...metimes when I'm doing a little project I'm not careful enough and accidentally add a dependency for a DLL that I am not aware of. When I ship this program to a friend or other people, "it doesn't work" because "some DLL" is missing. This is of course because the program can find the DLL on my syst...
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How to validate IP address in Python? [duplicate]

...ings like "4" and "192.168" and silently pads the rest with zeros. Technically valid, I'm sure, but not quite what I expected. – krupan Nov 25 '08 at 23:58 6 ...
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Better techniques for trimming leading zeros in SQL Server?

... Other answers here to not take into consideration if you have all-zero's (or even a single zero). Some always default an empty string to zero, which is wrong when it is supposed to remain blank. Re-read the original question. This answers what the Questioner wants. Solution #1: --Thi...
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How to check if a file exists in Documents folder?

... Or just [0] via index accessing – temporary_user_name Dec 16 '14 at 0:09 firstObject is more safe than [0] a...