Perl字符串包含括号

Question

I have a question. I have a variable that contains brackets for example:

Local $string = "abc[0].xzy"

Now I want to search for all strings in a file that matches that string $string . The problem is that the string contains a bracket and I can't change the to abc\\[0\\]\\.xzy . Is there a solution to solve my problem?

Answer 1

You may use \\Q \\E block (quotemeta) which treats all the chars present inside the block as literal chars.

/\Q$string\E/

Reference