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Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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Timeout jQuery effects
I am trying to have an element fade in, then in 5000 ms fade back out again. I know I can do something like:
7 Answers
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Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
I wish to print a Stack<Integer> object as nicely as the Eclipse debugger does (i.e. [1,2,3...] ) but printing it with out = "output:" + stack doesn't return this nice result.
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“TypeError: (Integer) is not JSON serializable” when serializing JSON in Python?
I am trying to send a simple dictionary to a json file from python, but I keep getting the "TypeError: 1425 is not JSON serializable" message.
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How to paste in a new line with vim?
I often have to paste some stuff on a new line in vim. What I usually do is:
14 Answers
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When should I use cross apply over inner join?
What is the main purpose of using CROSS APPLY ?
13 Answers
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How to limit the amount of concurrent async I/O operations?
Here is the problem, it starts 1000+ simultaneous web requests. Is there an easy way to limit the concurrent amount of these async http requests? So that no more than 20 web pages are downloaded at any given time. How to do it in the most efficient manner?
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Determining if an Object is of primitive type
I have an Object[] array, and I am trying to find the ones that are primitives. I've tried to use Class.isPrimitive() , but it seems I'm doing something wrong:
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How do I remove the first characters of a specific column in a table?
In SQL, how can I remove the first 4 characters of values of a specific column in a table? Column name is Student Code and an example value is ABCD123Stu1231 .
I want to remove first 4 chars from my table for all records
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jQuery SVG, why can't I addClass?
I am using jQuery SVG. I can't add or remove a class to an object. Anyone know my mistake?
15 Answers
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