regex - 如何在 Perl 中提取用双引号括起来的子字符串？

Question

我是 Perl 和正则表达式的新手，我很难提取由双引号括起来的字符串。例如，

"Stackoverflow isawesome"

Before I extract the strings, I want to check if it is the end of the line of the whole text was in the variable:

if($wholeText =~ /\"$/)   #check the last character if " which is the end of the string
{
   $wholeText =~ s/\"(.*)\"/$1/;   #extract the string, removed the quotes
}

我的代码不起作用；它没有进入 if健康)状况。

Answer 1

你需要做:

if($wholeText =~ /"$/)
{
    $wholeText =~ s/"(.*?)"/$1/s;
}

.除非您应用 /s，否则不匹配换行符修饰符。

没有必要像你做的那样逃避引号。