Hi there, please look at this. This code occur "Assertion failure: '!vthis->csym' on line 713 in file 'glue.c":



import std.algorithm;



class Node

{

         Node _parent;

         Node[] _children;



         this()

         {

         }



         void addChild(Node child)

         {

                  _children ~= child;

         }



         void removeChild(Node child)

         {

                  _children = remove!( (i){return i == child;} )(_children);
// This line crashes!

         }



@property:

         Node parent() {return _parent;}



         void parent(Node node) {_parent = node;}



         Node[] children() {return _children;}

}



I cannot understand error message..



What is the problem? Or how can I fix it?



ps> There are not enough examples for std.container :(