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Invalid date format specification in gemspec

...update --system Edit: You can also try (as suggested by ZeissS) gem install rubygems-update update_rubygems share | improve this answer | follow | ...
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Android getting value from selected radiobutton

... Just a small correction, a very small one rather, you have declared 'rg' twice. It wont make a difference at all, just makes the code more readable. – SanVed Aug 19 '18 at 18:06 ...
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Location Services not working in iOS 8

... I ended up solving my own problem. Apparently in iOS 8 SDK, requestAlwaysAuthorization (for background location) or requestWhenInUseAuthorization (location only when foreground) call on CLLocationManager is needed before starting loc...
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How to delete a row by reference in data.table?

...nce yet. data.table can add and delete columns by reference since it over-allocates the vector of column pointers, as you know. The plan is to do something similar for rows and allow fast insert and delete. A row delete would use memmove in C to budge up the items (in each and every column) after t...
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Compare two files line by line and generate the difference in another file

... diff(1) is not the answer, but comm(1) is. NAME comm - compare two sorted files line by line SYNOPSIS comm [OPTION]... FILE1 FILE2 ... -1 suppress lines unique to FILE1 -2 suppress lines unique to FILE2 -...
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Pandas index column title or name

...ow do I get the index column name in python pandas? Here's an example dataframe: 9 Answers ...
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Add a background image to shape in XML Android

How do you add a background image to a shape? The code I tried below but no success: 6 Answers ...
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Is there a shortcut in Eclipse to Re-run the most recently launched program?

One of the most frequent thing I do with Eclipse is to re-run the last program. I do it by going to Run -> Run History -> [top most item] . ...
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typedef struct vs struct definitions [duplicate]

I'm a beginner in C programming, but I was wondering what's the difference between using typedef when defining a structure versus not using typedef . It seems to me like there's really no difference, they accomplish the same goal. ...
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pandas: How do I split text in a column into multiple rows?

...nswered Jun 14 '13 at 20:44 Dan AllanDan Allan 27.4k66 gold badges6060 silver badges6060 bronze badges ...