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How to delete files older than X hours

... Using --mmin +X returns all files with my find. My fault for not checking this first, but this command just deleted most of my home directory. For me, --mmin -X is the correct argument. – brandones Oct 16 '13 a...
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When to use LinkedList over ArrayList in Java?

...ements it with a doubly-linked list. ArrayList implements it with a dynamically re-sizing array. As with standard linked list and array operations, the various methods will have different algorithmic runtimes. For LinkedList<E> get(int index) is O(n) (with n/4 steps on average), but O(1) w...
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Fast permutation -> number -> permutation mapping algorithms

... In general, the k'th digit will have base b[k] = k + 2. The highest value allowed for digit k is h[k] = b[k] - 1 = k + 1. Our rule about the weights w[k] of digits requires that the sum of h[i] * w[i], where i goes from i = 0 to i = k, is equal to 1 * w[k+1]. Stated recurrently, w[k+1] = w[k] + h[...
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Rails create or update magic?

I have a class called CachedObject that stores generic serialised objects indexed by key. I want this class to implement a create_or_update method. If an object is found it will update it, otherwise it will create a new one. ...
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What is the cleanest way to disable CSS transition effects temporarily?

I have a DOM element with some/all of the following effects applied: 11 Answers 11 ...
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Detect Click into Iframe using JavaScript

... is cross domain. What I would like to do is track if the user clicked at all in the iframe . I imagine a scenario where there is an invisible div on top of the iframe and the the div will just then pass the click event to the iframe . ...
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Searching for UUIDs in text with regex

...blocks of text using a regex. Currently I'm relying on the assumption that all UUIDs will follow a patttern of 8-4-4-4-12 hexadecimal digits. ...
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How to install XNA game studio on Visual Studio 2012?

...y still having a copy of 2010 for when i want to fiddle with XNA. This installed it easy and with lightning speed for Win7/VS2012. Now i can nuke my copy and fiddle some with an old project of mine. Thanks a lot! – Madmenyo Mar 18 '14 at 18:00 ...
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Assembly code vs Machine code vs Object code?

...e to machine code with the use of an assembler or a compiler, though we usually think of compilers in association with high-level programming language that are abstracted further from the CPU instructions. Building a complete program involves writing source code for the program in either assembly or...
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Parser Error Message: Could not load type 'TestMvcApplication.MvcApplication'

... +1 This was my problem too. The error message and help on this is basically non-existent. Thanks. – Noldorin Jan 6 '12 at 11:50 4 ...