Re^3: translate to one-liner

Apologies Monks.

I should have elaborated, this was/is not by any means critical. There is no need, just my own esoteric curiosity. I've been playing around with 'the problem' for a bit now and wondering if it was a thing which had already been handled. Every search gave results for the converse situation of turning a one-liner into a program, thus my desire to get more insight.

Thank you for your attention.

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Re^4: translate to one-liner by afoken (Chancellor) on May 27, 2015 at 04:00 UTC
Well, if you allow a little bit of "cheating": Place the code of the original program in a Module. Wrap the main code in a subroutine. Add `use Exporter qw( import );` and `@EXPORT_OK=qw( the_main_subroutine );` to the module. Call as `perl -MThe::Module=the_main_subroutine -e the_main_subroutine`. Voila: nearly instant one-liner. To make the one-liner even shorter, use `@EXPORT` instead of `@EXPORT_OK`, then use `perl -MThe::Module -e the_main_subroutine`. This is a first step to really useful modules. Reduce the main program, make more subroutines available, return values instead of printing them, and so on. You may end with a "hybrid" module that is primary useful in other programs, but has a little routine exported on demand so you also can use it from the command line, as shown above. Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply] [d/l] [select]

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Re^4: translate to one-liner
by afoken (Chancellor) on May 27, 2015 at 04:00 UTC

Well, if you allow a little bit of "cheating":

Place the code of the original program in a Module. Wrap the main code in a subroutine. Add use Exporter qw( import ); and @EXPORT_OK=qw( the_main_subroutine ); to the module. Call as perl -MThe::Module=the_main_subroutine -e the_main_subroutine. Voila: nearly instant one-liner. To make the one-liner even shorter, use @EXPORT instead of @EXPORT_OK, then use perl -MThe::Module -e the_main_subroutine.

This is a first step to really useful modules. Reduce the main program, make more subroutines available, return values instead of printing them, and so on. You may end with a "hybrid" module that is primary useful in other programs, but has a little routine exported on demand so you also can use it from the command line, as shown above.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

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