Function BY_COMPARE_TO

Compares objects using the compareTo function provided in the first object. If the 'compareTo' function is not available then it falls back to the DEFAULT_COMPARE.

Implements

Comparator

Example: _Usage with a class_

import { BY_COMPARE_TO, DEFAULT_COMPARE } from "apprt-core/comparators"

class Sample {
     constructor({ id, msg = "" }) {
         this.id = id;
         this.msg = msg;
     }
     compareTo(other) {
         return DEFAULT_COMPARE(this.id, other?.id);
     }
 }

 const lotOfSamples = [new Sample({ id: "C" }), new Sample({ id: "F" }), new Sample({ id: "B" })];
 lotOfSamples.sort(BY_COMPARE_TO);
 assert.deepEqual(["B", "C", "F"], lotOfSamples.map((s) => s.id));
  • BY_COMPARE_TO(a: Partial<Comparable<any>>, b: any): number

  • Parameters

    Returns number

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