5 It is the smartmatch operator. You can make a hash from any even-length list, which is all you're doing in your example. Sep 5, 2012 · @pst, <> is not a file handle, "null" or otherwise. The angle brackets are used by two operators: readline or glob. There's a reference to it as the "angle operator" in perlvar, although there isn't actually any such operator. Quoting: @_: Within a subroutine the array @_ contains the parameters passed to that subroutine. pl "string1" "string2" 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? Dec 30, 2010 · 128 perldoc perlvar is the first place to check for any special-named Perl variable info. Your Readonly example is taking advantage of Perl's flexibility with Nov 23, 2020 · 骆驼书Learning Perl 《Learning Perl》骆驼书，全书加附录一共363页，很多对不对。买到书后我是如何翻这363页快速翻到Perl入门级？ 我的答案是:不用每页都细读， 快速翻看目录找共同点和重点来看。我学习新语言的方式是找以往编程语言入门 共同点 和 重点，比如 基础变量， 控制循环，构建函数 共同 May 23, 2025 · I'm working on a Perl script. pl "string1" "string2". 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? Here the sigil changes to $ to denote that you are accessing a scalar, however the trailing [0] tells perl that it is accessing a scalar element of the array in _ or in other words, @_. pl "string1" "string2" 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? Here the sigil changes to $ to denote that you are accessing a scalar, however the trailing [0] tells perl that it is accessing a scalar element of the array in _ or in other words, @_. 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. 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. In general, when you want information about operators in Perl, see perldoc perlop Feb 2, 2016 · The => operator in perl is basically the same as comma. The operator depends on the contents of the brackets. So you could have written Martin => 28 which would be the same as 'Martin', 28. Feb 2, 2016 · The => operator in perl is basically the same as comma. Only including it for completeness for the question in the title. The only difference is that if there's an unquoted word on the left, it's treated like a quoted word. 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 those mean and some use cases for them, or at least tell me a way of finding out their meaning. More details can be found in perldoc perlsub (Perl subroutines) linked from the perlvar: Any arguments passed in show up in the array @_ . How can I parse command line parameters given to it? Example: script. Dec 30, 2010 · 128 perldoc perlvar is the first place to check for any special-named Perl variable info. Specifically, the readline operator. It's an operator.

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