关于数据类型转换的一些总结，相当多的种类，很不错，只要你想用的，几乎都有了-on data type conversion of some conclusions, a considerable number of categories, very good, as long as you want to use, and almost all of the

关于数据类型转换的一些总结，相当多的种类，很不错，只要你想用的，几乎都有了-on data type conversion of some conclusions, a considerable number of categories, very good, as long as you want to use, and almost all of the