Code Explainers

Code explainers tagged #weakmap

typescript 
import { Pipe, PipeTransform } from '@angular/core';
 
@Pipe({
  name: 'chunk',

A memoized chunk pipe in Angular

memoization weakmap pure-pipes
Intermediate 7 steps
typescript 
type CacheEntry<V> = {
  value: V;
  computedAt: number;
};

A TTL cache keyed by object identity

caching weakmap generics
Intermediate 8 steps
typescript 
type CloneInput = Record<string, unknown> | unknown[] | Map<unknown, unknown> | Set<unknown>;
 
export function deepClone<T>(value: T): T {
  if (typeof structuredClone === "function") {

Building a deepClone with cycle safety

recursion deep-copy cycle-detection
Intermediate 8 steps