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jremmen/zipw.js

Last active August 29, 2015 13:57
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js: zip with function, takes 2 lists/arrays and zips them by mapping function (f) over each pair
Raw
zipw.js
zipw = function(a,b,f) {
var c = a.length < b.length ? {a:a, b:b} : {a:b, b:a};
return c.a.map(function(x,i) {
return f(x,c.b[i]);
});
}
zipw([1,2,3],[10,11,12], function(x,y) { return x + y; }); // [11,13,15]
zipw([1,2,3],[10,11,12], function(x,y) { return x * y; }); // [10,22,36]
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