convert list to int[]

array_test.duby

import stdlib.Array
import java.util.Arrays

class ArrayTest
  def self.from_list
    ints = Array.of_ints [3,6,2,9,5,7,4,8]
    Arrays.sort(ints)
    for i in ints
      puts i
    end
  end
end

puts ArrayTest.from_list                                                                                              

# when you pass in lists of junk, bad things happen
# ints = Array.of_ints [3,"foo",2,9.0,"bar",7,4,8]
# java.lang.String cannot be cast to java.lang.Integer

gistfile2.txt

# make sure this is compiled and on your $CLASSPATH
# http://github.com/takeru/dubious/blob/master/lib/stdlib/array.duby

$ duby array_test.duby 
2
3
4
5
6
7
8
9
null

gistfile3.txt