Match Expression: Perl-compatible regular expression that matches against the value of the header.
MatchExpression：采用兼容Perl的正则表达式来匹配报头值。
A regular expression followed by + matches one or more occurrences of the regular expression.
号后面的正则表达式可以匹配这个正则表达式的一次或多次出现。
A regular expression followed by? Matches zero or one occurrence of the regular expression.
号后面的正则表达式可以匹配这个正则表达式的零次或一次出现。
First, get all the matches with a regular expression that look pretty complex.
首先，获得所有与一看起来非常复杂的正则表达式匹配的结果。
If the line matches the regular expression, then you print out that line.
如果该行与正则表达式匹配，则打印该行。
Value is True if the source matches against the regular expression, otherwise false is returned.
如果源与正则表达式相匹配，则值为True，否则将返回false。
If the input text matches the regular expression, what this method returns is true.
如果输入文本与正则表达式匹配，则该方法返回true。
If no regular expression_r matches are found, the result from the convention string search is used.
如果没有找到匹配的正则表达式，使用常规字符串的结果。
A regular expression that matches the statement separator.
匹配语句分隔符的正则表达式。
If no regular expression_r_r matches are found, the result from the convention string search is used.
如果没有找到匹配的正则表达式，使用常规字符串的结果。
If no regular expression_r_r matches are found, the result from the convention string search is used.
如果没有找到匹配的正则表达式，使用常规字符串的结果。
应用推荐