2020-03-29 13:43:52 +00:00
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<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [@apextoaster/js-utils](./js-utils.md) > [setOrPush](./js-utils.setorpush.md)
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## setOrPush() function
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Set a map key to a new array or push to the existing value.
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<b>Signature:</b>
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```typescript
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export declare function setOrPush<TKey, TVal>(map: Map<TKey, Array<TVal>>, key: TKey, val: TVal | Array<TVal>): void;
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```
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## Parameters
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| Parameter | Type | Description |
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| --- | --- | --- |
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2020-03-31 13:54:31 +00:00
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| map | <code>Map<TKey, Array<TVal>></code> | The destination map and source of existing values. |
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| key | <code>TKey</code> | The key to get and set. |
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| val | <code>TVal | Array<TVal></code> | The value to add. |
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2020-03-29 13:43:52 +00:00
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<b>Returns:</b>
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`void`
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