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What's the difference between “declare class” and “interface” in TypeScript
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edited Jan 15 '13 at 22:39
answered Jan 15 '13 at 22:27
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LINQ - Left Join, Group By, and Count
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Mehrdad AfshariMehrdad Afshari
379k8383 gold badges822822 silver badges775775 bronze badges
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How to create full compressed tar file using Python?
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edited Dec 31 '19 at 21:45
ventaquil
2,39133 gold badges1717 silver badges4040 bronze badges
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Re-entrant locks in C#
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edited May 23 '17 at 12:03
Community♦
111 silver badge
answered Dec 24 '08 at 17:44
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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...don't know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(x => !B.includes(x) );
console.log(diff);
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Simple calculations for working with lat/lon and km distance?
...ate conversions are:
Latitude: 1 deg = 110.574 km
Longitude: 1 deg = 111.320*cos(latitude) km
This doesn't fully correct for the Earth's polar flattening - for that you'd probably want a more complicated formula using the WGS84 reference ellipsoid (the model used for GPS). But the error is prob...
Why does only the first line of this Windows batch file execute but all three lines execute in a com
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306
Maven uses batch files to do its business. With any batch script, you must call another scrip...
Is there an equivalent to e.PageX position for 'touchstart' event as there is for click event?
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answered Aug 31 '11 at 0:07
mkoistinenmkoistinen
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Which concurrent Queue implementation should I use in Java?
...ins this.
– Nakedible
May 7 '11 at 13:36
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How do I iterate over a range of numbers defined by variables in Bash?
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1838
for i in $(seq 1 $END); do echo $i; done
edit: I prefer seq over the other methods because I c...