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Hello, World!

Tradition says language guides should start with a program that displays "Hello, World!" on the screen. Let's oblige!
public fun main() {
print("Hello, World!")
Every program in Hylo must define a main function, with no parameters and no return value, as its entry point. Here, main contains single statement, which is a call to a global function print with a string argument.
The standard library vends an API to interact with the program's environment. Command line arguments are accessed by reading a constant named Environment.arguments. Return statuses are signaled by calling the global function exit(status:).
To run this program:
  • Copy that main function into a file called Hello.hylo.
  • Run the command hc Hello.hylo -o hello.
  • Run the command ./hello to run the executable.
Last modified 3mo ago