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//sample int object for testing
var IntObj = function(val) {
	this.val = val;
	this.type = "int";
};

var ObjCapsule = function(obj, valname) {
	this.obj = obj;
	this.valname = valname;
	this.val = obj[valname];
	ObjCapsule.prototype.set = function(val) {
		this.obj[this.valname] = val;
		this.val = this.obj[this.valname];
	};
	ObjCapsule.prototype.get = function() {
		return this.val;
	};
};

/*   var a = new IntObj(6);
   var b = ObjCapsule(a, "val");
   b
   var b = new ObjCapsule(a, "val");
   b
=> { obj: { val: 6, type: 'int' }, valname: 'val', val: 6 }
   b.set(5)
   a
=> { val: 5, type: 'int' }
   b
=> { obj: { val: 5, type: 'int' }, valname: 'val', val: 5 }
   */