ui
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# `mapSpread()`
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The mapSpread method iterates over the collection's items, passing each nested item value into the given callback.
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The callback is free to modify the item and return it, thus forming a new collection of modified items:
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```js
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const collection = collect([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
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const chunks = collection.chunk(2);
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const sequence = chunks.mapSpread((even, odd) => even + odd);
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sequence.all();
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// [1, 5, 9, 13, 17]
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```
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[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/mapSpread.js)
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