Function disjointBy

disjointBy<TElement, TSecond, TKey, TSecondKey>(
    source: Iterable<TElement>,
    other: Iterable<TSecond>,
    keySelector: Selector<TElement, TKey>,
    otherKeySelector: Selector<TSecond, TSecondKey>,
    keyComparator?: EqualityComparator<TKey | TSecondKey, TKey | TSecondKey>,
): boolean
Determines whether the key projections of source and other are mutually exclusive.
Type Parameters
- TElement
  Type of elements within the source iterable.
- TSecond
  Type of elements within the other iterable.
- TKey
  Key type produced by keySelector.
- TSecondKey
  Key type produced by otherKeySelector.
Parameters
- source: Iterable<TElement>
  The primary iterable.
- other: Iterable<TSecond>
  Iterable compared against source.
- keySelector: Selector<TElement, TKey>
  Projection that produces the key evaluated for each source element.
- otherKeySelector: Selector<TSecond, TSecondKey>
  Projection that produces the key evaluated for each element of other.
- OptionalkeyComparator: EqualityComparator<TKey | TSecondKey, TKey | TSecondKey>
  Optional equality comparator applied to projected keys. Defaults to the library's standard equality comparison.
Returns boolean
true when no projected keys intersect; otherwise, false.
Throws
Re-throws any error encountered while iterating either iterable or executing the selector projections/comparator.

Remarks
When the default comparator is used, the implementation buffers the larger key collection in a Set and short-circuits as soon as an intersecting key is found. Supplying a custom comparator forces a full pairwise comparison, which may iterate both iterables repeatedly; prefer the default comparator when suitable.
Example
```
const left = [{ name: 'Alice' }, { name: 'Bella' }];
const right = [{ name: 'Mel' }];
const areDisjoint = disjointBy(left, right, p => p.name, p => p.name);
console.log(areDisjoint); // true
```
- Defined in src/enumerator/functions/disjointBy.ts:28

Function disjointBy

Type Parameters

Parameters

Returns boolean

Throws

Remarks

Example

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