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Is unsigned integer subtraction defined behavior?
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107
The result of a subtraction generating a negative number in an unsigned type is well-defined:
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How can you sort an array without mutating the original array?
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176
Another way with es6 (non-deep copy):
const sorted = [...arr].sort();
the spread-syntax as ...
How to programmatically set the layout_align_parent_right attribute of a Button in Relative Layout?
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edited May 9 '13 at 22:58
answered Jan 9 '11 at 12:04
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Counting inversions in an array
I'm designing an algorithm to do the following: Given array A[1... n] , for every i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find...
mongodb group values by multiple fields
...dr",
"book": "$book"
},
"bookCount": { "$sum": 1 }
}},
{ "$group": {
"_id": "$_id.addr",
"books": {
"$push": {
"book": "$_id.book",
"count": "$bookCount"
},
},
"count": { "$s...
How does one make random number between range for arc4random_uniform()?
... for access to arc4random_uniform(UInt32). I attempted using the range of (1..7) to avoid randomly getting 0 however that returned an error which I didn't enjoy too much. I tried to do this:
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How to pass an ArrayList to a varargs method parameter?
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edited Oct 10 '19 at 21:52
answered Mar 25 '12 at 20:27
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convert streamed buffers to utf8-string
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edited Jul 19 '16 at 19:20
Sharikov Vladislav
5,88144 gold badges3636 silver badges7171 bronze badges
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How to deny access to a file in .htaccess
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189
Within an htaccess file, the scope of the <Files> directive only applies to that directo...
How to calculate the number of days between two dates? [duplicate]
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581
const oneDay = 24 * 60 * 60 * 1000; // hours*minutes*seconds*milliseconds
const firstDate = new ...