IronPython的第九块鳞片

        IronPython这次又给我们带来了惊喜，IronPython0.7.2发布了！这距上一个版本的发布只有十天时间，速度真的让人吃惊！这主要得益于广大程序员对IronPython的关注，从workspace上的active bugs在不断的增多就可见一斑了。我相信问题发现得越多，则完善得越快，1.0版本也就越完美，越值得期待。
        这一次新版本的发布主要还是修改了一些bugs：
        * Indexing .Net arrays, both single- and multi-dimensional 
        * Correct exception thrown on division by zero (ZeroDivisionError) 
        * string constant parsing fixed to handle unrecognized escape sequences correctly 
        * Complex slicing scenarios fixed
        * issubclass(class, instance) fixed to raise correct exception
        * chr(x) raises ValueError on invalid values
        * callable() implemented
        * object.__delattr__ implemented
        * Exception.args can now be accessed from Python code (this relates to the .Net array access)
        * str(None) is now handled correctly
        * Call with keyword args is fixed 
        * Invoking .Net properties with parameters (indexers) is now supported
        * .Net classes with static constructor can now be subclassed
        * max() and min() fixed to work on lists and support correct arguments
        * open file overloads are now implemented
        * complex() second argument is optional fixed
        * Implementation of long integer division. This enables us to run Parrotbench again.
        bugs的修改就不说了，新版本当中附带了一个example，以说明在IronPython当中如何使用Delegate。不怕您笑话，我对Delegate知之甚少——只是知道Delegate给我们提供了一种使用函数指针的方式，正好趁这个机会好好了解一下Delegate了。