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What are the differences in die() and exit() in PHP?

What are the differences between die() and exit() functions in PHP? 16 Answers 16 ...
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What is the difference between NaN and None?

I am reading two columns of a csv file using pandas readcsv() and then assigning the values to a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead ...
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Should I use px or rem value units in my CSS? [closed]

I am designing a new website and I want it to be compatible with as much browsers and browser settings as possible. I am trying to decide what unit of measurement I should use for the sizes of my fonts and elements, but am unable to find a conclusive answer. ...
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C++ multiline string literal

...le string. " "The disadvantage is that you have to quote " "each part, and newlines must be literal as " "usual."; The indentation doesn't matter, since it's not inside the quotes. You can also do this, as long as you take care to escape the embedded newline. Failure to do so, like my first...
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Difference between git checkout --track origin/branch and git checkout -b branch origin/branch

Does anybody know the difference between these two commands to switch and track a remote branch? 4 Answers ...
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Centering a view in its superview using Visual Format Language

I just started learning AutoLayout for iOS and had a look at Visual Format Language. 14 Answers ...
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Executing injected by innerHTML after AJAX call

... idea is to move the script that you want to execute into an external file and create a script tag when you get your Ajax response. You then set the src attribute of your script tag and voila, it loads and executes the external script. This other StackOverflow post may also be helpful to you: Can s...
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In Python how should I test if a variable is None, True or False

... Don't fear the Exception! Having your program just log and continue is as easy as: try: result = simulate(open("myfile")) except SimulationException as sim_exc: print "error parsing stream", sim_exc else: if result: print "result pass" else: print...
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download file using an ajax request

... Update April 27, 2015 Up and coming to the HTML5 scene is the download attribute. It's supported in Firefox and Chrome, and soon to come to IE11. Depending on your needs, you could use it instead of an AJAX request (or using window.location) so long ...
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Are duplicate keys allowed in the definition of binary search trees?

I'm trying to find the definition of a binary search tree and I keep finding different definitions everywhere. 12 Answers ...