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  1. var concatMap = require('../');
  2. var xs = [ 1, 2, 3, 4, 5, 6 ];
  3. var ys = concatMap(xs, function (x) {
  4. return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
  5. });
  6. console.dir(ys);