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  1. operators - What is the difference between "||" and "or" in Perl ...

    Nov 10, 2019 · 53 From Perl documentation: OR List operators On the right side of a list operator, it has very low precedence, such that it controls all comma-separated expressions found there.

  2. What's the use of <> in Perl? - Stack Overflow

    Sep 5, 2012 · @pst, <> is not a file handle, "null" or otherwise. It's an operator. Specifically, the readline operator. There's a reference to it as the "angle operator" in perlvar, although there …

  3. What is the meaning of @_ in Perl? - Stack Overflow

    Dec 30, 2010 · 128 perldoc perlvar is the first place to check for any special-named Perl variable info. Quoting: @_: Within a subroutine the array @_ contains the parameters passed to that …

  4. What does the -> arrow do in Perl? - Stack Overflow

    7 Perl arrow operator has one other use: Class−>method invokes subroutine method in package Class though it's completely different than your code sample. Only including it for …

  5. Perl flags -pe, -pi, -p, -w, -d, -i, -t? - Stack Overflow

    Jun 10, 2011 · Below are the flags that I encounter most often, and I don't have a clue what they mean: perl -pe perl -pi perl -p perl -w perl -d perl -i perl -t I will be very grateful if you tell me …

  6. regex - What is /^ and /i in Perl? - Stack Overflow

    The match operator is the syntax that tells the Perl interpreter: here comes a regex. In Perl, the match operator is normally delimited by '/' at start and end, but you can use delimiters (e.g., …

  7. How do I perform a Perl substitution on a string while keeping the ...

    In Perl, what is a good way to perform a replacement on a string using a regular expression and store the value in a different variable, without changing the original? I usually just copy the stri...

  8. terminology - What does " ~~ " mean in Perl? - Stack Overflow

    5 It is the smartmatch operator. In general, when you want information about operators in Perl, see perldoc perlop

  9. What is the significance of -T or -w in #!/usr/bin/perl?

    Jun 29, 2012 · In the case of perl /usr/bin/perl is the path to the perl interpreter. If the hashbang is left out the *nix systems won't know how to parse the script when invoked as an executable.

  10. What's the safest way to iterate through the keys of a Perl hash?

    Dec 5, 2015 · If I have a Perl hash with a bunch of (key, value) pairs, what is the preferred method of iterating through all the keys? I have heard that using each may in some way have …