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ld cannot find an existing library

... that works, I am kind of perplexed that it would name the file in a completely useless way by default - can you provide any insight why it would do this by default? – maxpenguin Dec 3 '08 at 1:09 ...
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Showing line numbers in IPython/Jupyter Notebooks

...ent notebook versions Shift-L should toggle for all cells. If you can't remember the shortcut, bring up the command palette Ctrl-Shift+P (Cmd+Shift+P on Mac), and search for "line numbers"), it should allow to toggle and show you the shortcut. ...
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What are free monads?

I've seen the term Free Monad pop up every now and then for some time, but everyone just seems to use/discuss them without giving an explanation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of cat...
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How to Test a Concern in Rails

... have a Personable concern in my Rails 4 application which has a full_name method, how would I go about testing this using RSpec? ...
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Python multiprocessing PicklingError: Can't pickle

...This piece of code: import multiprocessing as mp class Foo(): @staticmethod def work(self): pass if __name__ == '__main__': pool = mp.Pool() foo = Foo() pool.apply_async(foo.work) pool.close() pool.join() yields an error almost identical to the one you pos...
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Adding Only Untracked Files

...hs, I've often found myself in a position where I've interactively added some updates to the index and I want to add all of the untracked files to that index before I commit. ...
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How do I add 1 day to an NSDate?

...ch better solution than the selected answer – Justin Meiners Jul 9 '12 at 16:54 19 +1 for using D...
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How can I find the number of days between two Date objects in Ruby?

... think you mean subtract the begin date from the end date :) – Nader Nov 24 '11 at 0:30 100 ...
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How do the post increment (i++) and pre increment (++i) operators work in Java?

Can you explain to me the output of this Java code? 14 Answers 14 ...
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Windows equivalent to UNIX pwd

... i got access denied and searched for solution , it took time so switched to another answer cd only – shareef Jul 7 '15 at 20:18 ...