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Check whether a path is valid in Python without creating a file at the path's target

...DoS-driven attacks. (See below.) We're gonna fix all that. Question #0: What's Pathname Validity Again? Before hurling our fragile meat suits into the python-riddled moshpits of pain, we should probably define what we mean by "pathname validity." What defines validity, exactly? By "pathname val...
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Why does changing the sum order returns a different result?

... Here's what's going on in binary. As we know, some floating-point values cannot be represented exactly in binary, even if they can be represented exactly in decimal. These 3 numbers are just examples of that fact. With this progr...
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Scheduling R Script

...e that task should be done each day, month, ... repeated several times, or whatever you like share | improve this answer | follow | ...
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T-SQL CASE Clause: How to specify WHEN NULL

...it can lead to other side effects – see this excellent article. To solve what was asked, I would rather go with ISNULL(' '+ last_name, '') mentioned in comment below. – miroxlav Apr 2 '16 at 11:31 ...
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Finding out whether a string is numeric or not

... What happens for a string with hundreds of characters all digits? Is there a limit to the NSNumber created? – Biniou Jan 11 '17 at 13:13 ...
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Better naming in Tuple classes than “Item1”, “Item2”

...ore complex datatypes. Why would you want to forcibly use Tuples no matter what (see other answers) – bytecode77 Aug 19 '16 at 15:52 3 ...
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System.Data.SQLite Close() not releasing database file

...DB abstraction layer for C# and I never actually got around to finding out what the issue was. I just ended up throwing an exception when you attempted to delete a SQLite DB using my library. Anyway, this afternoon I was looking through it all again and figured I would try and find out why it was d...
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Difference between onCreateView and onViewCreated in Fragment

What's the essential difference between these two methods? When I create a TextView, should I use one over the other for performance? ...
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parseInt vs unary plus, when to use which?

What are the differences between this line: 5 Answers 5 ...
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How to automatically generate a stacktrace when my program crashes

... What would happen if the crash comes from inside malloc? Wouldn't you then hold a lock and then get stuck as "backtrace" tries to allocate memory? – Mattias Nilsson Apr 17 '12 at 6:39 ...