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How do I calculate the normal vector of a line segment?
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243
if we define dx=x2-x1 and dy=y2-y1, then the normals are (-dy, dx) and (dy, -dx).
Note that n...
How to calculate the number of days between two dates? [duplicate]
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const oneDay = 24 * 60 * 60 * 1000; // hours*minutes*seconds*milliseconds
const firstDate = new Date(2008, 1, 12);
const secondDate = new Date(2008, 1, 22);
const diffDays = Math.round(Math.abs((firstDate - secondDate) / oneDay));
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Java, Classpath, Classloading => Multiple Versions of the same jar/project
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answered May 24 '11 at 9:07
Luca PutzuLuca Putzu
1,3881717 silver badges2424 bronze badges
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Immediate function invocation syntax
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edited Jul 29 '14 at 19:24
answered Jun 2 '09 at 13:11
cg...
Should import statements always be at the top of a module?
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answered Sep 24 '08 at 17:38
John MillikinJohn Millikin
178k3636 gold badges199199 silver badges215215 bronze badges
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How to add item to the beginning of List?
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answered Dec 24 '08 at 0:37
Matt HamiltonMatt Hamilton
183k5959 gold badges376376 silver badges317317 bronze badges
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How to change field name in Django REST Framework
...ate and edit requests?
– iankit
Oct 24 '15 at 21:24
1
Line no 13 of 'Zen of Python' : "There sho...
I've found my software as cracked download on Internet, what to do?
...y.
– Aaron Ransley
Aug 23 '10 at 23:24
59
I suspect the impact/effect of piracy varies from marke...
Is 'switch' faster than 'if'?
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answered Jul 24 '11 at 5:09
Billy ONealBilly ONeal
95.4k4141 gold badges279279 silver badges518518 bronze badges
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How to check if an intent can be handled from some activity?
... android api 30+, it doesn't always work now)
– user924
Jun 24 at 14:30
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