DON'T <HelloWorld /> WITHOUT IT.

# Static values used in the program.
.section .rodata
   hello:     .string "Hello World!!\n"  # Static, global, read-only string.
   lenHello:  .int 15                    # sizeof(hello)
# Program code
.section .text
.globl _start
.type _start, @function
_start:                  # Simple function to print 'Hello World!!' to the screen.
   movl  $hello, %esi    # Push our string address to first parameter.
   movl  lenHello, %edx  # Set the length of message to print.
   movl  $1, %eax        # __NR_write
   movl  $1, %edi        # stdout
   syscall               # Call the system to write to screen.
   movl  $60, %eax       # __NR_sysexit
   xorl  %edi, %edi      # Return code 0
   syscall               # Exit the program with success.
#include <stdio.h>

void hello(const char *name)
	printf("Hello %s!!\n", name);

int main(int argc, const char *const *argv)

	return 0;
#include <string>
#include <iostream>

using namespace std;

void hello(const string &name)
	cout << "Hello " << name << "!!" << endl;

int main(int argc, const char *const *argv)

	return 0;
package main

import (

func helloWorld(name string) string {
	m := "Hello " + name
	return m

func main() {
import java.util.function.Consumer;

public class HelloWorld {

    public static void main(String[] args){
        final Consumer<String> hello = name -> System.out.println("Hello " + name + "!!");
const Hello = ({ name, }) => (
  <div {}>
    {`Hello ${name}`}

const HelloWorld = props => <Hello {...props} name="World" />;

const App = () => <HelloWorld />;

ReactDOM.render(<App />, document.getElementById('main'));
fun main(args: Array<String>) = println("Hello ${args[0]}")
''' Hello World '''

def hello_world(name):
    ''' Return string of Hello + name '''
    msg = "Hello {0}!".format(name)
    return msg

if __name__ == '__main__':
    print hello_world("World")
fn main() {

fn hello_world(name: &str) -> () {
   println!("Hello {}!!", name)
import Foundation

func hello(_ name: String) -> String {
  let m = "Hello \(name)!"
  return m




A GraphQL client designed for the JVM (Java, Kotlin, Scala, etc.)


Jest matcher that performs image comparisons and behaves just like Jest snapshots do! Very useful for browser visual comparison testing.


American Express' Technology organization is serious about education and training for its developers. Each year we host an internal developer conference featuring leading industry experts and workshops designed to enrich and enlighten.

A Peek Inside the (Mobile) Sausage Factory

American Express' mobile app recently captured some major industry recognition. Learn the story of how we built the iOS global mobile application, which helped propel us to the top.

Interfacing with a GraphQL API from Java can be more difficult than it has to be. Learn how easy it can be to query against GraphQL from any JVM language using a new client library named Nodes.

Clean code is a consistent style of programming that makes your code easier to write, read, and maintain. Discover how to make your React code cleaner using easy-to-follow examples.