fix up rarray subscript operation

Aaron Goodman · Aaron Goodman · commit 70d34d796667 · 2012-03-01T10:59:35.000-05:00
diff --git a/lib/rsruby/rarray.rb b/lib/rsruby/rarray.rb
@@ -30,7 +30,6 @@ def subset(_keys,_dim)
     new_order = _keys.map{|x|
       all_keys.index(x)
     }
-    new_order=new_order.compact
     new_array = subset_helper(@array,new_order,0,_dim)
     if @dimnames.is_a? Array
       new_dimnames = @dimnames.dup
@@ -44,7 +43,7 @@ def subset(_keys,_dim)
   def subset_helper(_array,_new_order,_current_depth,_target_depth)
     if _current_depth == _target_depth
       _new_order.map{|x|
-        _array.fetch(x)
+        x.nil? ? nil : _array.fetch(x)
       }
     else
       _array.map{|x|
