Hello! Hello Again!
Hello! Hello Again! or H!HA! is an esolang created by User:None1.
It has only 3 commands:
Hello, World! with a line feed.
Again! jumps to the start of program.
World! is a NOP.
Commands are separated by spaces, and invalid commands echo themselves.
Since it only has commands for printing, doing nothing and restricted infinite loop, it obviously cannot be used for real programming.
A much simpler one:
Infinite Hello World
The program prints out
Hello, World! over and over.
- Python Implementation Provide program as input. Crashes relatively quickly if Again! is in the program (If you don't want it to crash, you can add
import sys;sys.setrecursionlimit(2147483647)in the start of the program).