#debounce code explainers

go

func (w *Watcher) resetDebounce(d time.Duration) {
	if !w.timer.Stop() {
		select {
		case <-w.timer.C:

Debouncing a stream of events in Go

debounce timers channels

Advanced 7 steps

typescript

import { useCallback, useRef, useState } from "react";
 
type Tag = { id: string; label: string };

A debounced, abortable tag-input hook in React

custom-hooks debounce abort-controller

Advanced 10 steps

ruby

class Article < ApplicationRecord
  belongs_to :author
  has_many :taggings, dependent: :destroy
  has_many :tags, through: :taggings

Keeping a search index fresh in Rails

callbacks background-jobs debounce

Intermediate 9 steps

typescript

import { Directive, ElementRef, EventEmitter, inject, NgZone, OnDestroy, Output } from '@angular/core';
 
@Directive({
  selector: '[appResizeDebounced]',

A debounced resize directive in Angular

debounce change-detection host-bindings

Advanced 7 steps

typescript

import { useState, useEffect, useRef, useCallback } from "react";
 
interface Suggestion {
  id: string;

A debounced autocomplete hook in React

debounce custom-hooks abortcontroller

Advanced 7 steps

go

package editor
 
import (
	"context"

How a debouncer coalesces bursts in Go

debounce concurrency timers

Intermediate 8 steps

javascript

const zxcvbn = require('zxcvbn');
 
const STRENGTH_LABELS = ['Very weak', 'Weak', 'Fair', 'Strong', 'Very strong'];
const STRENGTH_COLORS = ['#d64545', '#e0803c', '#d9c94c', '#5aa84f', '#2f8f3a'];

Building a live password strength meter

debounce closures dom-events

Intermediate 8 steps

php

<?php
 
namespace App\Models;

Debouncing Eloquent jobs in Laravel

debounce model-events queued-jobs

Advanced 7 steps

python

import threading
from functools import wraps

A thread-safe debounce decorator in Python

decorators debounce threading

Advanced 6 steps

typescript

type ResizeCallback = (size: { width: number; height: number }) => void;
 
export function observeResize(callback: ResizeCallback, delay = 150) {
  let timeoutId: ReturnType<typeof setTimeout> | undefined;

Debouncing window resize in TypeScript

debounce closures event-listeners

Intermediate 6 steps

javascript

import { useState, useRef, useCallback, useLayoutEffect } from "react";
 
export function useResizeObserver({ debounce = 0 } = {}) {
  const [size, setSize] = useState({ width: 0, height: 0 });

A resize-observing hook in React

custom-hook resizeobserver callback-ref

Advanced 8 steps

php

final class DebouncedSessionStore
{
    private array $pending = [];
    private array $timers = [];

Debouncing session writes with an event loop

debounce event-loop atomic-write

Advanced 9 steps

rust

use std::collections::HashSet;
use std::path::PathBuf;
use std::time::Duration;

Debouncing filesystem events in async Rust

debounce async channels

Advanced 7 steps

java

public final class Debouncer<T> {
 
    private final ScheduledExecutorService scheduler =
            Executors.newSingleThreadScheduledExecutor(runnable -> {

How a debouncer collapses bursts in Java

debounce concurrency scheduling

Intermediate 9 steps

typescript

import { Component } from '@angular/core';
import { FormControl, ReactiveFormsModule } from '@angular/forms';
import { HttpClient } from '@angular/common/http';
import { AsyncPipe } from '@angular/common';

Reactive type-ahead search in Angular

rxjs reactive-forms debounce

Intermediate 9 steps

javascript

import { useState, useEffect, useCallback, useRef } from "react";
 
export function usePersistentForm(storageKey, initialValues) {
  const [values, setValues] = useState(() => {

A React hook that persists form state to localStorage

custom-hooks localstorage debounce

Intermediate 9 steps

javascript

import { useState, useEffect, useMemo } from 'react';
 
function useDebounce(value, delay = 300) {
  const [debounced, setDebounced] = useState(value);

Debounced search with cancellation in React

custom-hooks debounce abortcontroller

Intermediate 9 steps

go

package debounce
 
import (
	"sync"

Building a debouncer in Go

concurrency debounce timers

Intermediate 6 steps