# A function that can be called with a code section.
# The code section is expected to take an integer as parameter,
# and return a string.
routine Test()[X:int=>string] => string
{
	io.writeln( "In functional method!" );
	var s = yield( 123 ); # execute the code section;
	io.writeln( "Yielded value:", s );
	return s;
}

Test { [X]
	io.writeln( "In code section:", X );
	return "abc";
}

routine Test( alist : list<@T> )[ item :@T, index :int => none|int ] =>list<@T>
{
	yield( 55, 0 ); # invoke the code section of the caller;
	io.writeln( alist.collect{ [X] if( X < 33 ) return X } );
	# call the list functional method with the caller"s code section;
	return alist.collect{ [X,Y] yield(X,Y) };
}

var res = Test( {11,22,33,44} ){ [X] X > 22 }

io.writeln( res, std.about(res) );