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Function: uniqueBy()

Returns an iterable containing the values of iterable in iteration order, except values for which fn returns the same value are deduplicated.

When values are deduplicated, the value earlier in iteration order wins.

Example​

import { pipe, reduce, toArray, uniqueBy } from 'lfi'

console.log(
  pipe(
    [`sloth`, `lazy`, `sleep`],
    uniqueBy(word => word.length),
    reduce(toArray()),
  ),
)
//=> [ 'sloth', 'lazy' ]
Playground

Since​

v0.0.1

Call Signature​

uniqueBy<Value>(fn): (iterable) => Iterable<Value, any, any>

Type Parameters​

• Value

Parameters​

fn​

(value) => unknown

Returns​

Function

Parameters​

iterable​

Iterable<Value, any, any>

Returns​

Iterable<Value, any, any>

Defined in​

filters.d.ts:434

Call Signature​

uniqueBy<Value>(fn, iterable): Iterable<Value, any, any>

Type Parameters​

• Value

Parameters​

fn​

(value) => unknown

iterable​

Iterable<Value, any, any>

Returns​

Iterable<Value, any, any>

Defined in​

filters.d.ts:437