A basic Dart program, taken from the Dart website

BasicDart.dart

// Define a function.
printInteger(int aNumber) {
  print('The number is $aNumber.'); // Print to console.
}

// This is where the app starts executing.
main() {
  var number = 42; // Declare and initialize a variable.
  printInteger(number); // Call a function.
}

// From https://www.dartlang.org/guides/language/language-tour

A better programming language would look like this:

var number = 42
display "The number is {{number}}."

Notes:

1. Remove all punctuation noise like curly braces, semicolons, and empty parentheses.
2. Use the word display instead of the 1960s relic print.
3. Don't use two different variables for this (aNumber and number).
4. Don't use a disjointed two part program (with two different variables).
5. Don't require the invocation of two different functions.
6. Forget about main.