Perl 6
Perl 6 Language Design Tablet: Revision 18

Overview - Chapter: 0:Intr, 1:Hist, 2:Design, 3:Var, 4:Op, 5:IO, 6:{}, 7:Sub, 8:OOP, 9:Rx - Appendices: A:Index, B:Tables, C:Best of, D:Delta, E:Links




Larry Wall: You should not take this picture to mean that linguistics is the opposite of common sense. But ehm, there are many computer scientists, who have complained that it should be more like engineering and less like an art. And I disagree. But thats oukay.

Main Goal

Enjoy Life and enjoy the freedom expressing yourself. Which means: support you as much as possible and not to force you in any way. Perl 6 likes to be, even better than Perl 5, your humble servant for translating your thoughts into binary code (if possible).

Strategy

Every style and level of expertise has to be supported and even more difficult: all of them have to play together well. The default often imitates a natural language (i.e. english). Strategies and concepts for this are coined in several often repeated terms.

Terms

TIMTOWTDI

The everlasting slogan:"There is more then one way to do it.", meaning: your way is valid too. Only be aware of logical consequences.

All your paradigms belong to us

We learn/take/adapt from every source possible to offer the best of all breeds. And you should be able to keep your style when switching to Perl. Some of the paradigmes are structured, object oriented, aspect oriented, functional, design by contract, declarative and logical.

Buzzword compliant

This term is an extention to the last one. Not only every programming paradigm but also every technique or neat trick loudly markeded out there as "must have" "in the %DATE%", should be available in Perl 6 (or at least be possible) as long there is productive value in it. "named parameters", "lvalue subroutines", "parametrizable subclasses" or "hygienic macros" are just a few.

Keep easy things easy and hard possible

Huffman coding

Hide the fancy stuff.

Waterbed theory of liguistic complexity

Topicalizer

Second system syndrome

Less Unix Centric

Perl 1 was a child of the Unix world, borrowing a lot of folklore and words. As Perl 6 had to regularize the Regex and reform some other part, this heritage has become less visible.

Simple English

In Perl 5 we had my, our, use, require, bless, can, ISA (is a), chop and also of course if, else, goto and all the loops. Perl 6 adds given, when, take, WHERE, HOW, WHO and lot more everyday english which should make it easy to read.

Functional Programming

High order functions, currying, you name it. All that goodies are there, as Perl 6 aimes to an full support of functional programming.


Overview - Chapter: 0:Intr, 1:Hist, 2:Design, 3:Var, 4:Op, 5:IO, 6:{}, 7:Sub, 8:OOP, 9:Rx - Appendices: A:Index, B:Tables, C:Best of, D:Delta, E:Links


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