Code Explainers

Code explainers tagged #error-handling

go 
package main
 
import (
	"bufio"

Counting matching lines in Go with bufio

file-io buffered-scanning error-handling
Intermediate 4 steps
rust 
use axum::{extract::Form, http::StatusCode, response::{IntoResponse, Response}, Json};
use serde::Deserialize;
use serde_json::json;
use std::collections::HashMap;

Validating a signup form in Axum

form-validation deserialization error-handling
Intermediate 8 steps
javascript 
const fs = require('fs');
const path = require('path');
 
router.get('/downloads/:name', (req, res, next) => {

Streaming file downloads in Express

streaming backpressure file-download
Advanced 9 steps
ruby 
module Retryable
  class RetriesExhausted < StandardError; end
 
  RETRYABLE_ERRORS = [

Exponential backoff retries in Ruby

retry-logic exponential-backoff error-handling
Intermediate 7 steps
javascript 
async function pollJobUntilComplete(jobId, { interval = 2000, timeout = 60000, signal } = {}) {
  const deadline = Date.now() + timeout;
 
  while (true) {

Polling a job until it finishes in JavaScript

polling async-await abortsignal
Intermediate 6 steps
go 
package handlers
 
import (
	"net/http"

Rendering HTML pages with Gin handlers

http-handlers templating error-handling
Beginner 8 steps
rust 
use axum::{
    body::Body,
    extract::Path,
    http::{header, StatusCode},

Streaming file downloads in Axum

streaming file-serving path-traversal
Intermediate 8 steps
go 
package calc
 
import "testing"
 

Table-driven tests in Go

table-driven-tests error-handling subtests
Intermediate 7 steps
typescript 
interface RetryOptions {
  retries?: number;
  baseDelayMs?: number;
  maxDelayMs?: number;

Retrying async tasks with exponential backoff

retry exponential-backoff async
Intermediate 8 steps