按位读写的模板函数,本质来说,我们只能用字节来读取文件内容,但是,我们可以把字节内容进行位运算来进行分割,这样就可以按位来操作了.程序中将这些函数进行了完美的封装,直接调用就OK-By-bit read-write template function, in essence, we can only make use of byte to read the contents of the documents, but we can put the contents of byte-bit co