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Best way to find the intersection of multiple sets?

... want here, but in case you ever need a generalisation of "take the sum of all these", "take the product of all these", "take the xor of all these", what you are looking for is the reduce function: from operator import and_ from functools import reduce print(reduce(and_, [{1,2,3},{2,3,4},{3,4,5}]))...
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Xcode stuck at “Your application is being uploaded”

... just keep your head cool and check this first method: Check if your firewall protection is off. If not then turn it off. It maybe blocking you to connect your computer with iTunes Store. Try a different internet connection. The purpose for trying a different internet connection is that your curre...
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How do I create directory if none exists using File class in Ruby?

...added a core-only solution to my answer: Be aware, however, that it essentially reimplements FileUtils.mkdir_p (which is the method dedicated to your use case) – Eureka Sep 27 '12 at 9:12 ...
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How do I execute a command and get the output of the command within C++ using POSIX?

...use the C stdio API, I prefer the iostreams API. popen requires you to manually clean up the FILE handle, pstreams do that automatically. popen only accepts a const char* for the argument, which requires care to avoid shell injection attacks, pstreams allows you to pass a vector of strings similar t...
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How to know/change current directory in Python shell?

...now how to change. edit Under Windows: set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib (taken from http://docs.python.org/using/windows.html) edit 2 ... and even better: use virtualenv and virtualenv_wrapper, this will allow you to create a development environment where you can add module paths ...
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How to print struct variables in console?

... @fnr If you have a JSON document, you would need to unmarshall it, before being able to print its field. – VonC Jul 1 '14 at 14:16 ...
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How to do URL decoding in Java?

... { String result = java.net.URLDecoder.decode(url, StandardCharsets.UTF_8.name()); } catch (UnsupportedEncodingException e) { // not going to happen - value came from JDK's own StandardCharsets } Java 10 added direct support for Charset to the API, meaning there's no need to catch Unsuppor...
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Check if SQL Connection is Open or Closed

... as an enum and not turn it into a string..... – marc_s Aug 4 '11 at 15:19 4 Should've added usin...
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How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,

...gular expressions' is checked, and put the following as the text to find: _platformActions.InstallApp\((.+)\) And the following as the text to replace it with: this.Platform().App($1).Install() Note: As SLaks points out in a comment below, the change in regex syntax is due to VS2012 switching to...
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Auto Scale TextView Text to Fit within Bounds

... Ok, so I made an update to the code. Subtracting 1 from the line index was intentional and I added a comment. The error you got was probably from when there was not enough height to render even one line of text. I added a check and cleared the text in that case. (I work in Shibuya so I'd b...