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Download and open PDF file using Ajax

... Yes, it does work on all modern browsers. If you see a blank pdf, try running the ajax url in a new tab. If you get a blank screen there as well, might be a problem with the pdf itself. If you do see a pdf file there and not in the downloaded fil...
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How to grep for two words existing on the same line? [duplicate]

...imply do: grep "word1" FILE | grep "word2" grep "word1" FILE will print all lines that have word1 in them from FILE, and then grep "word2" will print the lines that have word2 in them. Hence, if you combine these using a pipe, it will show lines containing both word1 and word2. If you just want ...
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Daylight saving time and time zone best practices [closed]

...hanged from the original value recorded. When scheduling future events, usually local time is preferred instead of UTC, as it is common for the offset to change. See answer, and blog post. When storing whole dates, such as birthdays and anniversaries, do not convert to UTC or any other time zone. ...
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What's the difference between “groups” and “captures” in .NET regular expressions?

...hat each Group object contains a collection of Captures representing all the intermediary matches by the group during the match, as well as the final text matched by the group. And a few pages later, this is his conclusion: After getting past the .NET documentation and actually ...
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“Private” (implementation) class in Python

I am coding a small Python module composed of two parts: 7 Answers 7 ...
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What are the advantages of using nullptr?

This piece of code conceptually does the same thing for the three pointers (safe pointer initialization): 7 Answers ...
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Git search for string in a single file's history

So if I have a file called foo.rb and it is giving me an error for a missing method called bar , so I want to search the history of foo.rb for the string bar to see if it was ever defined in the past. ...
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HTML5 Local storage vs. Session storage

...ersists until explicitly deleted. Changes made are saved and available for all current and future visits to the site. For sessionStorage, changes are only available per tab. Changes made are saved and available for the current page in that tab until it is closed. Once it is closed, the stored data ...
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Big O, how do you calculate/approximate it?

..., but be warned that this topic takes my students a couple of months to finally grasp. You can find more information on the Chapter 2 of the Data Structures and Algorithms in Java book. There is no mechanical procedure that can be used to get the BigOh. As a "cookbook", to obtain the BigOh from ...
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How do you log server errors on django sites

... Well, when DEBUG = False, Django will automatically mail a full traceback of any error to each person listed in the ADMINS setting, which gets you notifications pretty much for free. If you'd like more fine-grained control, you can write and add to your settings a middlew...