The main() method
As with many other programming langauges, the entry point to a Frost program - the method which is
executed when the program starts up - is called main()
. There are several ways to define main()
:
As a @class
method taking no parameters:
class Hello {
@class
method main() {
Console.printLine("Hello, World!")
}
}
As a @class
method taking ListView<String>
, which receives the program's command-line
arguments:
class Hello {
@class
method main(args:ListView<String>) {
Console.printLine("Hello called with arguments: \{args}")
}
}
And finally, you may use bare code to put a main()
method at the top level of a
file, without an enclosing class (and either with or without a ListView<String>
parameter):
method main() {
Console.printLine("No enclosing class!")
}
No matter how it is defined, the main()
function is the program's entry point and will be executed
when the program is started.