# # `mapSpread()`

The mapSpread method iterates over the collection's items, passing each nested item value into the given callback. The callback is free to modify the item and return it, thus forming a new collection of modified items:

    const collection = collect([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);

    const chunks = collection.chunk(2);

    const sequence = chunks.mapSpread((even, odd) => {
      return even + odd;
    });

    sequence.all();

    //=> [1, 5, 9, 13, 17]

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