What's the simplest, library-free code for implementing array intersections in javascript? I want to write  intersection([1,2,3], [2,3,4,5])   and get  [2, 3]...
I've tried searching for a javascript function that will detect if two lines intersect each other.  The function will take the x,y values of both the start end points for each line (we'll call them line A and line B).  Is to return true if th...
I have two object literals like so:  var firstObject = {     x: 0,     y: 1,     z: 2,      a: 10,     b: 20,     e: 30 }  var secondObject = {     x: 0,     y: 1,     z: 2,      a: 10,     c: 20,     d: 30 }   I want to get the intersection of the k...
I would like to know if there is a way to find the intersection of a key value pair in an array of objects. Let's say you have an array of three objects which all have the same keys like this :       arrayOfObj = [     {         "a": 1,...
Is it possible in SVG, using any method, to call an even if two specific elements touch? Or would I have to code the long way, and figure out if their borders touch with complicated maths?...
I have polygon set. In this set some are exterior polygons and some may (or may not) be  holes. I don't know at this stage that which are polygon holes. I want to calculate the final polygon combining all the polygons including holes.   I thought...
Basically what i want to create:   I have a 3D map with objects, i want to select all objects that are in the 2D box x1,y1 to x2,y2 on my screen.  Any ideas how this has to be done, because i'm clueless on how to start.  Thanks in advance!  prevX...
I come across this math problem which is needed to complete my application, so I'm asking for help.  Given 2 (or more, but basically for 2) rectangles with 2 known points for each: Top-left(x1, y1) and Bottom-right(x2, y2) (I can find the length...
Using ES6's Set, given two arrays we can get the intersection like so:  let a = new Set([1,2,3]) let b = new Set([1,2,4]) let intersect = new Set([...a].filter(i => b.has(i)));   How can we get the intersection of n arrays?  Update:  I'm t...

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