Function distinct

Only emit values of an Iterable that have not been emitted yet.

The values are by default compared by identity (===). An optional Mapper function can be used to map the values to a different representation for the comparison.

Example

Distinct by value

const distinctByValue = distinct();
const distinctValues = distinctByValue([1,2,1,3]);
console.log(distinctValues); // [1,2,3]

Example

Distinct by keyMapper Function

const distinctByValue = distinct(isEven);
const distinctValues = distinctByValue([1,2,1,3]);
console.log(distinctValues); // [1,2]

See

filter for similar operations.

Returns

an Iterable containing only unique values