Code Explainers

Code explainers tagged #json

rust 
use serde::Deserialize;
 
#[derive(Debug, Deserialize)]
#[serde(untagged)]

Parsing flexible JSON shapes with serde

deserialization enums json
Intermediate 6 steps
rust 
use axum::{
    async_trait,
    extract::{rejection::JsonRejection, FromRequest, Request},
    http::StatusCode,

A validated JSON extractor in Axum

extractors validation error-handling
Intermediate 8 steps
php 
<?php
 
namespace App\Models;
 

Storing JSON preferences in a Laravel model

eloquent casting json
Intermediate 7 steps
javascript 
const express = require('express');
const router = express.Router();
 
router.get('/exports/orders', async (req, res) => {

Streaming a large JSON export in Express

streaming backpressure cursors
Advanced 9 steps
go 
package flatten
 
import (
	"encoding/json"

Flattening nested JSON into dotted keys

recursion json type-switch
Intermediate 7 steps
rust 
use serde_json::{Map, Value};
 
pub fn merge_config(base: &mut Value, override_with: Value) {
    match (base, override_with) {

Deep-merging JSON config layers in Rust

recursion json pattern-matching
Intermediate 9 steps
php 
<?php
 
final class TaskProgressReporter
{

Tracking task progress in a JSON file

state-persistence atomic-writes json
Intermediate 9 steps
ruby 
require "base64"
require "json"
 
module Attachment

Packing binary attachments into JSON

serialization base64 json
Intermediate 8 steps
rust 
use serde::{Deserialize, Serialize};
 
#[derive(Debug, Serialize, Deserialize)]
pub struct UserProfile {

Trimming JSON output with serde attributes

serialization json attributes
Intermediate 8 steps
go 
package handlers
 
import (
	"encoding/json"

Hardening JSON decoding in Go HTTP handlers

json error-handling http
Intermediate 8 steps
go 
package api
 
import (
	"encoding/json"

Building reusable JSON helpers in Go HTTP handlers

http json error-handling
Intermediate 9 steps
rust 
use serde::{Deserialize, Serialize};
 
#[derive(Debug, Serialize, Deserialize)]
#[serde(tag = "type", rename_all = "snake_case")]

Tagged enums with serde in Rust

enums serialization json
Intermediate 6 steps
python 
from datetime import datetime, date
from decimal import Decimal
from flask import Flask, jsonify
from flask.json.provider import DefaultJSONProvider

Serializing SQLAlchemy models in Flask JSON

serialization orm json
Intermediate 6 steps
php 
<?php
 
function uploadDocument(string $endpoint, string $filePath, array $meta): array
{

Uploading a file with cURL in PHP

curl file-upload http
Intermediate 8 steps
python 
import json
from dataclasses import dataclass, field, asdict
from datetime import datetime
from typing import Any

JSON round-tripping with Python dataclasses

dataclasses serialization json
Intermediate 6 steps
go 
package feed
 
import (
	"encoding/json"

Streaming a JSON array in Go

streaming json decoder
Intermediate 6 steps
java 
public class OrderSerializer {
 
    private final ObjectMapper mapper;
 

Configuring a reusable Jackson ObjectMapper

serialization json builder-pattern
Intermediate 8 steps
rust 
use serde::Deserialize;
use serde_json::Value;
use std::collections::HashMap;
 

Modeling nested JSON with serde in Rust

deserialization json struct-mapping
Intermediate 9 steps