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Find lines from a file which are not present in another file [duplicate]

I have two files (let's say a.txt and b.txt ), both of which has a list of names. I have already run sort on both the files. ...
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How to set button click effect in Android?

In Android, when I set background image to Button, I can not see any effect on button. 14 Answers ...
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connecting to MySQL from the command line

How can you connect to MySQL from the command line in a Mac? (i.e. show me the code) 6 Answers ...
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Is a RelativeLayout more expensive than a LinearLayout?

... In a talk at Google I/O 2013 (Writing Custom Views for Android), Romain Guy clarified the misunderstanding that caused everyone to start using RelativeLayouts for everything. A RelativeLayout always has to do two measure passes. Overall it is negligible as long as your view hiera...
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Python : List of dict, if exists increment a dict value, if not append a new dict

...en easier: from collections import defaultdict # available in Python 2.5 and newer urls_d = defaultdict(int) for url in list_of_urls: urls_d[url] += 1 If you access the defaultdict using a key, and the key is not already in the defaultdict, the key is automatically added with a default valu...
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Cannot instantiate the type List [duplicate]

... Raw collection types are dangerous and should not be used or suggested for use in any new code targeted for Java 5+, end of story. – Matt Ball Oct 31 '11 at 22:15 ...
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How to use the 'sweep' function

... sweep() is typically used when you operate a matrix by row or by column, and the other input of the operation is a different value for each row / column. Whether you operate by row or column is defined by MARGIN, as for apply(). The values used for what I called "the other input" is defined by STA...
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time.sleep — sleeps thread or process?

...tantive part of the sleep operation is wrapped in a Py_BEGIN_ALLOW_THREADS and Py_END_ALLOW_THREADS block, allowing other threads to continue to execute while the current one sleeps. You can also test this with a simple python program: import time from threading import Thread class worker(Thread)...
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Align items in a stack panel?

... this is what I meant with the 'etc.' I guess the answer is no, and will have to do it the tough way, read my comment for JMD above – Shimmy Weitzhandler Jan 7 '10 at 20:29 ...
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Error 330 (net::ERR_CONTENT_DECODING_FAILED):

... I enabled zlib.output_compression in php.ini and it seemed to fix the issue for me. share | improve this answer | follow | ...