如何在字符串中插入Perl哈希元素？

Question

How do I print a hash from within a string, as in

print "\n[*] Query : $select { query }";

versus

print "\n[*] Query : " . $select { query };

Answer 1

You may need to eliminate the extra spaces:

print "\n[*] Query : $select{query}";

With a space after $select , Perl thinks that you are done with the interpolation of that variable, and treats the following text (including the curly braces) literally.