Simon Soriano simon0191

libc++ vs libstdc++ are not binary-compatible: a tiny demo

C++ has two common standard-library implementations, GNU's libstdc++ and LLVM's libc++. They implement the same language standard, so C++ source is portable between them, but the compiled binaries are not interchangeable: a .so/binary built against one cannot be satisfied by the other. This ~20-line demo proves it, and shows why (different symbol names for the same type).

This is the class of failure you hit when a program built with libc++ links or loads a library built with libstdc++ (for example a vendor prebuilt like

Docker RUN vs CMD

RUN

creates a layer, it actually modifies the image during the build.
it's executed during "build time"
you can specify multiple RUNs in a Dockerfile

CMD

doesn't create a layer
specifies the command that will be run by default when the container is run if no command is passed to the docker run instruction

Estamos usando Pins para compartir, guardar y tener una forma fácil de encontrar ofertas de trabajo

Compartiendo ofertas de trabajo

Comparta la oferta de trabajo idealmente incluyendo descripción, habilidades requeridas, habilidades deseadas, salario, si es remota o no y cómo aplicar a la oferta.

Por ejemplo:

Desarrollador Full Stack en Medellín.

	{
	"version": 1,
	"generatedAt": "2026-04-06T12:33:36.092Z",
	"config": {
	"p1FighterId": "simon",
	"p2FighterId": "jeka",
	"stageId": "beach",
	"seed": 42,
	"speed": 1,
	"aiDifficulty": "medium"

	cask "iterm2"
	cask "slack"
	cask "raycast"
	cask "1password"
	cask "1password-cli"
	cask "spotify"
	cask "visual-studio-code"
	cask "claude-code"
	cask "claude"
	cask "whatsapp"

	# https://medium.com/@simon0191/c%C3%B3mo-hacer-que-esperanza-gomez-gane-los-premios-shock-8bb0044ec074
	require 'date'
	require 'cgi'
	require 'curb'

	TOKEN_REGEX = /.'(.)'.*/

	def vote(account_id, poll_id, vote_id, site_url, user_agent)
	timestamp = DateTime.now.strftime('%Q')
	token_url = "https://polldaddy.com/n/#{account_id}/#{poll_id}?#{timestamp}"

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Super Tienda</title>
	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.5/css/bootstrap.min.css">
	</head>
	<body>

	<h1>Hola Mundo</h1>

	require 'thread'
	require 'pp'

	def download_time(url)
	`curl --silent -w "%{time_total}" --output /dev/null #{url}`.to_f
	end

	def compare_download_times(urls,opts={})
	tests = opts[:tests] \|\| 1000
	concurrency = opts[:concurrency] \|\| 1

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Todo List</title>
	<link rel="stylesheet" href="style.css">
	</head>
	<body>
	<div class="wrapper">
	<h1>Todo List</h1>