ByRggV

ByRggV.markdown

ByRggV

A Pen by Pete Wildsmith on CodePen.

License.

script.js

var list = Immutable.List([{ x: 1} , {x: 2},{x: 3}]), list2 = Immutable.List([{ foo: 3} , {foo: 6},{foo: 9}]);

document.write(
  "<p>", !!list
  .map(function (x) { return x.x; }).toSet()
  .intersect(list2.map(function (x) { return x.foo; }))
  .size, "</p>"
);


document.write(
  "<p>", list.some(function (x) {
    return list2.some(function (y) {
      return x.x == y.foo;
    });
  }), "</p>"
);