Code Explainers

Code explainers tagged #internationalization

rust 
use axum::{
    extract::{FromRef, FromRequestParts, State},
    http::{header::ACCEPT_LANGUAGE, request::Parts, StatusCode},
    response::{IntoResponse, Response},

A custom Accept-Language extractor in Axum

extractors internationalization http-headers
Advanced 8 steps
java 
@Configuration
public class ValidationConfig implements WebMvcConfigurer {
 
    @Bean

Localized bean validation messages in Spring

internationalization bean-validation configuration
Intermediate 6 steps
typescript 
type CompactOptions = {
  locale?: string;
  maximumFractionDigits?: number;
};

Caching Intl.NumberFormat for compact numbers

memoization internationalization caching
Intermediate 7 steps
go 
package handlers
 
import (
	"net/http"

Locale-aware pricing in a Gin handler

internationalization content-negotiation currency-formatting
Intermediate 9 steps
php 
<?php
 
declare(strict_types=1);
 

Normalizing human names in PHP

unicode text-normalization transliteration
Intermediate 8 steps
typescript 
import { Pipe, PipeTransform, Inject, LOCALE_ID } from '@angular/core';
 
interface MoneyOptions {
  currency?: string;

Building a cached money pipe in Angular

pipes memoization internationalization
Intermediate 8 steps
ruby 
class Contact < ApplicationRecord
  PHONE_FORMATS = {
    "US" => /\A\+1\d{10}\z/,
    "GB" => /\A\+44\d{10}\z/,

Country-aware phone validation in Rails

validation callbacks regex
Intermediate 6 steps
go 
package middleware
 
import (
	"net/http"

Localized validation errors in Gin

middleware internationalization validation
Intermediate 8 steps
typescript 
type CurrencyFormatOptions = {
  locale?: string;
  currency: string;
  showDecimals?: boolean;

Caching Intl.NumberFormat for currency

memoization internationalization caching
Intermediate 9 steps
python 
from decimal import Decimal, ROUND_HALF_UP
 
from babel.numbers import format_currency
from flask import Flask

Building a currency Jinja filter in Flask

template filters decimal precision internationalization
Intermediate 6 steps
javascript 
const formatters = new Map();
 
function getFormatter(locale, currency) {
  const key = `${locale}:${currency}`;

Caching Intl.NumberFormat for currency formatting

memoization internationalization caching
Intermediate 8 steps
javascript 
const DIVISIONS = [
  { amount: 60, unit: 'seconds' },
  { amount: 60, unit: 'minutes' },
  { amount: 24, unit: 'hours' },

Building a human-friendly timeAgo formatter

internationalization relative-time lookup-table
Intermediate 6 steps
java 
package com.example.billing;
 
import java.math.BigDecimal;
import java.math.RoundingMode;

Locale-aware currency formatting in Java

internationalization rounding immutability
Intermediate 6 steps
php 
<?php
 
namespace App\Support;
 

Locale-aware formatting with PHP's intl extension

internationalization encapsulation constructor-injection
Intermediate 7 steps
typescript 
const DIVISIONS: { amount: number; unit: Intl.RelativeTimeFormatUnit }[] = [
  { amount: 60, unit: "seconds" },
  { amount: 60, unit: "minutes" },
  { amount: 24, unit: "hours" },

Human-readable relative times with Intl

internationalization date-formatting lookup-table
Intermediate 7 steps
php 
<?php
 
namespace App\Rules;
 

How a custom phone validation rule works in Laravel

validation custom-rules dependency
Intermediate 6 steps