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  1. operators - What does =~ do in Perl? - Stack Overflow

    51 I guess the tag is a variable, and it is checking for 9eaf - but does this exist in Perl? What is the "=~" sign doing here and what are the "/" characters before and after 9eaf doing?

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

    Sep 5, 2012 · What's the use of <> in Perl. How to use it ? If we simply write <>; and while (<>) what is that the program doing in both cases?

  3. 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 what each of …

  4. How does double arrow (=>) operator work in Perl? - Stack Overflow

    Feb 2, 2016 · The => operator in perl is basically the same as comma. The only difference is that if there's an unquoted word on the left, it's treated like a quoted word. So you could have written Martin …

  5. How can I parse command-line arguments in a Perl program?

    I'm working on a Perl script. How can I parse command line parameters given to it? Example: script.pl "string1" "string2"

  6. How do you round a floating point number in Perl?

    Output of perldoc -q round Does Perl have a round () function? What about ceil () and floor ()? Trig functions? Remember that int() merely truncates toward 0. For rounding to a certain number of digits, …

  7. Should I use \\d or [0-9] to match digits in a Perl regex?

    Per perldoc perluniintro, Perl does not support using digits other than [0-9] as numbers, so I would definitely use [0-9] if the following are both true: You want to use the result as a number (such as …

  8. 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 string to a new …

  9. How can I print the contents of a hash in Perl? - Stack Overflow

    Apr 24, 2016 · I keep printing my hash as # of buckets / # allocated. How do I print the contents of my hash? Without using a while loop would be most preferable (for example, a one-liner would be best).

  10. In Perl, how can I read an entire file into a string?

    Jun 5, 2009 · In Perl, how can I read an entire file into a string? Asked 16 years, 6 months ago Modified 4 months ago Viewed 204k times