26 lines
499 B
Markdown
26 lines
499 B
Markdown
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# `union()`
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The union method adds the given array to the collection. If the given array contains keys that are already in the original collection, the original collection's values will be preferred:
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```js
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const collection = collect({
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a: 'A',
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b: 'B',
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});
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const union = collection.union({
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a: 'AAA',
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c: 'CCC',
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b: 'BBB',
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});
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union.all();
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// {
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// a: 'A',
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// b: 'B',
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// c: 'CCC',
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// }
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```
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[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/union.js)
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