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Why is parenthesis in print voluntary in Python 2.7?
In Python 2.7 both the following will do the same
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What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
... sort compares the numbers as floats, this allows scientific notation eg 1.234E10 but is slower and subject to rounding error (1.2345678 could come after 1.2345679), numeric sort is just a regular alphabetic sort that knows 10 comes after 9.
See http://www.gnu.org/software/coreutils/manual/htm...
Get the first N elements of an array?
...ve_keys flag set to trueto avoid this. (4th parameter, available since 5.0.2).
Example:
$output = array_slice($input, 2, 3, true);
Output:
array([3]=>'c', [4]=>'d', [5]=>'e');
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Cast an instance of a class to a @protocol in Objective-C
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jQuery posting JSON
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'data' should be a stringified JavaScript object:
data: JSON.stringify({ "userName": userName...
Iterating over every two elements in a list
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What does the smiley face “:)” mean in CSS?
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How can I extract a good quality JPEG image from a video file with ffmpeg?
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How to display a content in two-column layout in LaTeX?
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Set operations (union, intersection) on Swift array?
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Yes, Swift has the Set class.
let array1 = ["a", "b", "c"]
let array2 = ["a", "b", "d"]
let set1:Set<String> = Set(array1)
let set2:Set<String> = Set(array2)
Swift 3.0+ can do operations on sets as:
firstSet.union(secondSet)// Union of two sets
firstSet.intersection(secondSet)...