第一个规则表达式将与后面依次跟有任意数量的空格或制表键以及开始圆括号的字符串“main ”匹配。

The first regular expression will match the string "main" followed by any number of Spaces or tabs, followed by an open parenthesis.

youdao

第一个规则表达式将与后面依次跟有任意数量的空格或制表键以及开始圆括号的字符串“main ”匹配。

The first regular expression will match the string "main" followed by any number of Spaces or tabs, followed by an open parenthesis.

youdao