它利用的是有关原子数据平面结构、元素之间换行字符的存在以及其他特性的特殊知识。
It exploits special knowledge about the flat structure of the atom data, the existence of newline characters between elements, and other characteristics.
因此,这个过滤器只允许数值char,而会丢弃换行字符。
Thus, the filter only allows in chars that are numeric digits, discarding the newline characters.
仔细研究二者的差别,尤其要注意加引号的形式和包含空白(如空格字符和换行符)的参数。
Study the differences carefully, particularly for the quoted forms and the parameters that include white space such as blanks or newline characters.
Usually with just two, maybe three characters, a character that you can't really see as well on the screen, otherwise, so a new line character.
通常需要两到三个字符,这些字符你们在屏幕上是,看不到的,这个是换行字符。
应用推荐