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How to combine multiple conditions to subset a data-frame using “OR”?

... Note: I want to thank the anonymous contributor that attempted to fix the error in the code immediately above, a fix that got rejected by the moderators. There was actually an additional error that I noticed when I was correcting the first one. The conditional clause that checks for NA values needs...
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git selective revert local changes from a file

... This seems to fail a lot for me when discarding changes ("error: patch failed <file>", "error: <file> patch does not apply"). Strangely enough I'll receive those errors when using the a option in patch mode to discard an entire file, yet git checkout -- <file> work...
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How do I edit /etc/sudoers from a script?

...he following output: visudo: unable to run /tmp/edit_sudoers: Exec format error visudo: /etc/sudoers.tmp unchanged – Jose Diaz-Gonzalez Oct 25 '13 at 5:58 ...
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File Upload ASP.NET MVC 3.0

... _SQLReader.Read(); } catch (Exception e) { // log errors here } } } // this method will be called as part of the Stream ímplementation when we try to write to our VarbinaryStream class. public override void Write(byte[] buffer, int index, int count) { try { i...
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How to write to an existing excel file without overwriting data (using pandas)?

...Writer(filename, engine='openpyxl') # Python 2.x: define [FileNotFoundError] exception if it doesn't exist try: FileNotFoundError except NameError: FileNotFoundError = IOError try: # try to open an existing workbook writer.book = load_workbook(file...
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How to get size of mysql database?

... Note: MySQL Workbench will spit out a Syntax error: {column title} (double quoted text) is not valid input here. error. The column titles should be wrapped in tick marks. I.e. Database Name. – KareemElashmawy Jul 17 '17 at 22:15 ...
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Initializing a static std::map in C++

... I'm using your first sample as <int,string> to bind error-numbers (from an enum) with messages - it is working like a charm - thank you. – slashmais Sep 22 '10 at 10:57 ...
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Selecting text in an element (akin to highlighting with your mouse)

... jQuery solution gives me Uncaught TypeError: Cannot read property 'msie' of undefined – egmfrs May 28 at 19:41 ...
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How to exit if a command failed?

...it out and it makes sense: "do this command (successfully)" OR "print this error and exit" – simpleuser Mar 14 '14 at 22:18 2 ...
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Format a date using the new date time API

I was playing with the new date time API but when running this: 3 Answers 3 ...