#dependency-injection code explainers

php

<?php
 
namespace App\Providers;

Binding a payment gateway in Laravel

dependency-injection service-container interface-binding

Intermediate 7 steps

java

@RestController
@RequestMapping("/webhooks/stripe")
public class StripeWebhookController {

How a Stripe webhook controller works in Spring

webhooks signature-verification event-handling

Intermediate 7 steps

typescript

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable, shareReplay } from 'rxjs';

Caching HTTP config in an Angular service

caching observables dependency-injection

Intermediate 6 steps

java

@RestController
@RequestMapping("/api/products")
public class ProductController {

How a paginated REST controller works in Spring

pagination dto-mapping dependency-injection

Intermediate 8 steps

python

from fastapi import APIRouter, Depends, Query
from pydantic import BaseModel
from sqlalchemy import func, select
from sqlalchemy.ext.asyncio import AsyncSession

How a paginated list endpoint works in FastAPI

pagination dependency-injection async-orm

Intermediate 8 steps

typescript

import { IsEmail, IsEnum, IsInt, IsOptional, IsString, Length, Max, Min } from 'class-validator';
import { Type } from 'class-transformer';
import { Body, Controller, Post } from '@nestjs/common';

How DTO validation works in NestJS

validation data-transfer-objects decorators

Intermediate 8 steps

go

package handlers
 
import (
	"net/http"

Rendering HTML pages with Gin handlers

http-handlers templating error-handling

Beginner 8 steps