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https://stackoverflow.com/questions/9614472/pointers-in-perl
Old answer "pointers" are not used in perl. I assume you mean the position of the match. There are several ways.
https://metacpan.org/pod/Pointer
Apr 27, 2005 · This module allows you to create Perl objects that emulate C pointers. You can use them to read and explore the memory of your Perl process. Pointer.pm (and every subclass) exports a function called pointer that returns a new pointer object. Each object has a type like (void, int, long, sv).
https://www.linuxquestions.org/questions/programming-9/pointers-in-perl-311591/
Apr 10, 2005 · basically a good way to think about pointers or reference in perl is to think that pointers are a special kind of scalar. So when initalizing a pointer you need create a "special scalar". However pointers can be of two things in perl. One is a regular reference like in C. and another kind of reference is an anonymous copy.
http://www.perlmeme.org/howtos/using_perl/dereferencing.html
Dereferencing in perl. References are commonly used when you are returning a large object or data structure (for example an array or hash) from a subroutine. Instead of returning a copy of the entire data structure, you return a pointer to the structure. This makes your programs more efficient. You can also use references to subroutines and scalars.
http://wwwacs.gantep.edu.tr/docs/perl-ebook/ch18.htm
A reference is simply an address to a value. How you use that value is up to you as the programmer and what the language lets you get away with. In Perl, you can refer to a pointer as a reference; in fact, you can use the terms pointer and reference interchangeably without any loss of meaning.
https://perldoc.perl.org/perlref.html
References are easy to use in Perl. There is just one overriding principle: in general, Perl does no implicit referencing or dereferencing. When a scalar is holding a reference, it always behaves as a simple scalar. It doesn't magically start being an array or hash or subroutine; you have to tell it explicitly to do so, by dereferencing it.
https://perlmaven.com/array-references-in-perl
(If you are a C programmer, don't even think about pointer arithmetic. You can't do that in Perl.) Basically, if you see such value printed somewhere, you know that the code is accessing a reference to an array and that you should probably change the code to access the content of that array.
https://www.geeksforgeeks.org/pointers-vs-references-cpp/
C and C++ support pointers which are different from most of the other programming languages. Other languages including C++, Java, Python, Ruby, Perl and PHP support references. On the surface, both references and pointers are very similar, both are used to have one variable provide access to another.
https://www.tutorialspoint.com/perl/perl_references.htm
A Perl reference is a scalar data type that holds the location of another value which could be scalar, arrays, or hashes. Because of its scalar nature, a reference can be used anywhere, a scalar can be used. You can construct lists containing references to other lists, which can contain references to hashes, and so on. This is how the nested ...
https://www.tutorialspoint.com/perl/perl_operators.htm
What is an Operator? Simple answer can be given using the expression 4 + 5 is equal to 9.Here 4 and 5 are called operands and + is called operator. Perl language supports many operator types, but following is a list of important and most frequently used operators −
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