Variable findOrDefaultAsyncConst

Type Declaration

• • <T>(
        defaultValue: ValueOrFactory<T>,
        predicate?: MaybeAsyncPredicateFunction<T>,
    ): AsyncCollectorFunction<T, T>

  • Returns a collector that returns the first entry from the Iterable that satisfies the 'predicate' function or the 'defaultValue'.

    Type Parameters

    • T

      Type of items in the source.

    Parameters

    • defaultValue: ValueOrFactory<T>

      Default value to return if no entry satisfies the 'predicate' function.

    • predicate: MaybeAsyncPredicateFunction<T> = ...

      A function that tests each entry for a condition.

    Returns AsyncCollectorFunction<T, T>

    Collector that returns the first entry from the Iterable that satisfies the 'predicate' function or the 'defaultValue'.

    Example

    const result = firstOrDefaultAsync(2)([1, 2, 3]);
    console.log(result); // 2
    Copy