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Are Javascript arrays sparse?

... undefined So perhaps using a dense array to get a feel for the original AIX kernel bug might need to be forced with a range-alike: > denseArray = [...Array(2**24).keys()] [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28...
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Vertical (rotated) label in Android

...vate var padTop = 0 private var layout1: Layout? = null override fun setText(text: CharSequence, type: BufferType) { super.setText(text, type) layout1 = null } private fun makeLayout(): Layout { if (layout1 == null) { metrics.width = height ...
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Why is isNaN(null) == false in JS?

... Won't work if myInt="123d". parseInt converts "123d" to 123, which then fails the isNaN test. – divesh premdeep Feb 18 '15 at 13:34 ...
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std::function and std::bind: what are they, and when should they be used?

I know what functors are and when to use them with std algorithms, but I haven't understood what Stroustrup says about them in the C++11 FAQ . ...
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Format a number as 2.5K if a thousand or more, otherwise 900

...rx, "$1") + si[i].symbol; } /* * Tests */ var tests = [ { num: 1234, digits: 1 }, { num: 100000000, digits: 1 }, { num: 299792458, digits: 1 }, { num: 759878, digits: 1 }, { num: 759878, digits: 0 }, { num: 123, digits: 1 }, { num: 123.456, digits: 1 }, { num: 123.45...
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Can you change what a symlink points to after it is created?

... MacOS X, there is no such call. Is there a call to do that on ... Linux, AIX, HP-UX, anything else that looks like Unix? Windows doesn't really have symlinks in the same way, AFAICT, so it is not critical to my analysis - but information about the equivalent Windows API would be useful. ...
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Size of Matrix OpenCV

...So the size in terms of elements of elementary type is M.rows * M.cols * M.cn To find the max element one can use Mat src; double minVal, maxVal; minMaxLoc(src, &minVal, &maxVal); share | ...
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In Ruby, how do I skip a loop in a .each loop, similar to 'continue' [duplicate]

...from within a block intentionally can be confusing. For instance: def my_fun [1, 2, 3].map do |e| return "Hello." if e == 2 e end end my_fun will result in "Hello.", not [1, "Hello.", 2], because the return keyword pertains to the outer def, not the inner block. ...
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c++编译错误:invalid new-expression of abstract class type - C/C++ - ...

...全部需要实现,这样才能new 子类。 纯虚函数例如 void fun() = 0; 是纯虚函数,不是纯虚函数不作要求。 另外,void fun() { } 空函数体也是实现。 纯虚函数相当于C#中abstract抽象类。 =0 说明函数是抽象的方法...
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c++编译错误:invalid new-expression of abstract class type - c++1y / s...

...实现,这样才能new 子类。 纯虚函数例如  void fun() = 0; 是纯虚函数,不是纯虚函数不作要求。 另外,void fun()  {  }  空函数体也是实现。 纯虚函数相当于C#中abstract抽象类。 =0 说明函数是...