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How to detect duplicate values in PHP array?

...he presence of duplicate values, then count the number of duplicate values and out put the results. For example, given the following array: ...
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Calling constructors in c++ without new

... I guess these types of actions are optimized and therefore, do not significantly differ in performance aspects. – M. Williams Apr 27 '10 at 16:14 14 ...
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Have a fixed position div that needs to scroll if content overflows

...d this for an adaptation of a Codrops article. Some might need to use left and right set to 0 also. Thank a lot, luck – Santiago Baigorria Oct 14 '13 at 18:56 20 ...
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Is SQL or even TSQL Turing Complete?

...e programming languages, so that's kinda cheating). In this set of slides Andrew Gierth proves that with CTE and Windowing SQL is Turing Complete, by constructing a cyclic tag system, which has been proved to be Turing Complete. The CTE feature is the important part however -- it allows you to crea...
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Check if all elements in a list are identical

...sions are that: In checkEqual2 the content must be hashable. checkEqual1 and checkEqual2 can use any iterators, but checkEqual3 must take a sequence input, typically concrete containers like a list or tuple. checkEqual1 stops as soon as a difference is found. Since checkEqual1 contains more Python...
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(Mac) -bash: __git_ps1: command not found

I'm trying to change my command promt in terminal. I keep getting the error: 19 Answers ...
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“X-UA-Compatible” content=“IE=9; IE=8; IE=7; IE=EDGE”

... If you support IE, for versions of Internet Explorer 8 and above, this: <meta http-equiv="X-UA-Compatible" content="IE=9; IE=8; IE=7" /> Forces the browser to render as that particular version's standards. It is not supported for IE7 and below. If you separate with semi...
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?

In case I do not care about the order of task completion and just need them all to complete, should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?): ...
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What does it mean for a data structure to be “intrusive”?

I've seen the term intrusive used to describe data structures like lists and stacks, but what does it mean? 2 Answers ...
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Why does the Scala compiler disallow overloaded methods with default arguments?

... I think your proposal here makes a lot of sense, and I don't see what would be so complex about specifying/implementing it. Essentially, the parameter types are part of the function's ID. What does the compiler currently do with foo(String) and foo(Int) (i.e., overloaded ...