Darkhogg/polyethylene

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[Home](./index.md) &gt; [polyethylene](./polyethylene.md) &gt; [IndexedTypePredicate](./polyethylene.indexedtypepredicate.md)

## IndexedTypePredicate type

A function that receives an object (`elem`<!-- -->) and its `index` in the iteration and returns a `boolean` value indicating if `elem` is of the generic type `U`

<b>Signature:</b>

```typescript
export declare type IndexedTypePredicate<T, U extends T> = (elem: T, index: number) => elem is U;
```