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Version: 0.8.0

distinct

Validate that the array has no duplicate values. A non-array value fails.

Signature​

NguardValidators.Array.distinct: ValidatorFn

Reactive forms​

import { FormControl } from '@angular/forms';
import { NguardValidators } from 'ng-nguard';

new FormControl([1, 2, 3], [NguardValidators.Array.distinct]);

Template-driven forms​

<input ngModel name="tags" nguardDistinct />

Error key​

{ distinct: true }

Notes​

  • Uniqueness is determined with Set value-equality: primitives are compared by value, objects by reference. Two structurally-equal objects are therefore treated as distinct.
  • A non-array value (including null/undefined) fails.

See also​