Hello World

The simplest example of a program in Rue is the classic hello world example.

Write the following program in a file named hello.rue:

hello.rue

fun main() -> Bytes {
    "Hello, world!"
}

info

You don't need to use return at the end of a function. Everything in Rue must return a value, including functions, so this is implied.

Now, run the following command to run the file:

rue build hello.rue --run

You should see "Hello, world!" printed in the console.