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Re: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff

by jo37 (Hermit)
on Sep 10, 2020 at 17:08 UTC ( #11121565=note: print w/replies, xml ) Need Help??


in reply to What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff

[Highly desirable] Make a semicolon optional at the end of the line, if there is a balance of brackets on the line and the statement looks syntactically correct ("soft semicolon", the solution used in famous IBM PL/1 debugging compiler).

I feel a bit ashamed to admit that I had programmed in PL/I for several years. The reason why PL/I was so relaxed w.r.t. syntax is simple: You put your box full of punched cards to the operators' desk and you get the compiler's result the next day. If the job had failed just because of a missing semicolon, you'd loose one full day. Nowadays there is absolutely no need for such stuff.

BTW, the really fatal errors in a PL/I program resulted in a compiler warning of the kind "conversion done by subroutine call". This happend e.g. when assigning a pointer to a character array.

I wouldn't like to see any of the fancy features of PL/I in Perl. Consult your fortune database:

Speaking as someone who has delved into the intricacies of PL/I, I am sure that only Real Men could have written such a machine-hogging, cycle-grabbing, all-encompassing monster. Allocate an array and free the middle third? Sure! Why not? Multiply a character string times a bit string and assign the result to a float decimal? Go ahead! Free a controlled variable procedure parameter and reallocate it before passing it back? Overlay three different types of variable on the same memory location? Anything you say! Write a recursive macro? Well, no, but Real Men use rescan. How could a language so obviously designed and written by Real Men not be intended for Real Man use?

Greetings,
-jo

$gryYup$d0ylprbpriprrYpkJl2xyl~rzg??P~5lp2hyl0p$
  • Comment on Re: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff

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Re^2: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff
by likbez (Sexton) on Sep 11, 2020 at 02:05 UTC
    PL/1 still exists, although as a niche language practically limited to mainframes. Along with being a base for C it also was probably the first programming language that introduced exceptions as mainstream language feature. Also IMHO it is the origin of functions substr, index and translate as we know them. Compilers from PL/1 were real masterpieces of software engineering and probably in many aspects remain unsurpassed.
    https://www.ibm.com/support/knowledgecenter/zosbasics/com.ibm.zos.zmainframe/zmainframe_book.pdf

    What is common between PL/1 and Perl is the amount of unjustified hate from CS departments and users of other languages toward them.

    What I think is common about both is that, while being very unorthodox, they are expressive and useful. Fun to program with. As Larry Wall said: "Perl is, in intent, a cleaned up and summarized version of that wonderful semi-natural language known as 'Unix'."

    Unorthodox nature and solutions in Perl which stems from Unix shell is probably what makes people coming from Python/Java/JavaScript background hate it.

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