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Show HN: PHPunctional, a PHP Functional Programming Library

37 points by r-cyr 11y ago

ben_pr 11y ago
Nice work! I'll have to explore a bit more.
gmack 11y ago
So, when does P#P come out?
- johnmaguire2013 11y ago
  I've been considering PCP... PHP: Compiled Perl. Eseentially, you write Perl but get PHP. Or vice-versa. Doesn't really matter because it's a joke anyway.
nine_k 11y ago
Quite jolly! I hope that performance impact is negligible. Now it would be nice to make a wrapper to convert exception-throwing calls into Either-returning calls (or it's there and I missed it?). This would help with accessing standard / third-party libraries.
- r-cyr 11y ago
  I will try to profile it soon but basically, until now, it was more about "what's possible" than "how fast can I make it" kind of project. Also, that exception-handling either is a great idea, thank you.
rjbrock 11y ago
You should definitely add a link to your examples in your README. For anyone else looking, they are located here: https://github.com/r-cyr/PHPunctional/tree/master/P/Examples https://github.com/r-cyr/PHPunctional/tree/master/P/Examples
- r-cyr 11y ago
  Thank you, just added the link to the README like you suggested
mfonda 11y ago
Another awesome functional library / extension for PHP is https://github.com/lstrojny/functional-php https://github.com/lstrojny/functional-php
V-2 11y ago
https://github.com/r-cyr/PHPunctional/blob/master/P/Examples/Fun.php https://github.com/r-cyr/PHPunctional/blob/master/P/Examples... Readable? Concise? Esthetical? :) FP with PHP is like putting a saddle on a cow. Interesting as an experiment, but I can't really imagine using it in production - I can't imagine someone preferring to have this version of Fibonacci in their codebase over whatever any sane programmer would write instead
mambodog 11y ago
You could improve the usability of this library (or FP in PHP in general), by implementing 'string lambdas' such as those found in Oliver Steele's Functional.js[0], which was a clever, if controversial, workaround for Javascript's lack of a concise anonymous function syntax at the time. For example function($n) use ($partial) { return $partial($n - 1) + $partial($n - 2); could become 'partial(n - 1) + partial(n - 2)' Compiling the string lambda to a function can be memoized with the string itself as the key (as many regex implementations do with the regex text) so each is only ever compiled once. [0] http://osteele.com/sources/javascript/functional/ http://osteele.com/sources/javascript/functional/
widmogrod 11y ago
Have you seen this project? https://github.com/widmogrod/php-functional https://github.com/widmogrod/php-functional Tackle problem same problem as your library, also in PHP.

37 points by r-cyr 11y ago

ben_pr 11y ago

Nice work! I'll have to explore a bit more.

gmack 11y ago

So, when does P#P come out?

johnmaguire2013 11y ago
I've been considering PCP... PHP: Compiled Perl. Eseentially, you write Perl but get PHP. Or vice-versa. Doesn't really matter because it's a joke anyway.

nine_k 11y ago

Quite jolly! I hope that performance impact is negligible. Now it would be nice to make a wrapper to convert exception-throwing calls into Either-returning calls (or it's there and I missed it?). This would help with accessing standard / third-party libraries.

r-cyr 11y ago
I will try to profile it soon but basically, until now, it was more about "what's possible" than "how fast can I make it" kind of project. Also, that exception-handling either is a great idea, thank you.

rjbrock 11y ago

You should definitely add a link to your examples in your README. For anyone else looking, they are located here: https://github.com/r-cyr/PHPunctional/tree/master/P/Examples https://github.com/r-cyr/PHPunctional/tree/master/P/Examples

r-cyr 11y ago
Thank you, just added the link to the README like you suggested

mfonda 11y ago

Another awesome functional library / extension for PHP is https://github.com/lstrojny/functional-php https://github.com/lstrojny/functional-php

V-2 11y ago

https://github.com/r-cyr/PHPunctional/blob/master/P/Examples/Fun.php https://github.com/r-cyr/PHPunctional/blob/master/P/Examples... Readable? Concise? Esthetical? :) FP with PHP is like putting a saddle on a cow. Interesting as an experiment, but I can't really imagine using it in production - I can't imagine someone preferring to have this version of Fibonacci in their codebase over whatever any sane programmer would write instead

mambodog 11y ago

You could improve the usability of this library (or FP in PHP in general), by implementing 'string lambdas' such as those found in Oliver Steele's Functional.js[0], which was a clever, if controversial, workaround for Javascript's lack of a concise anonymous function syntax at the time. For example function($n) use ($partial) { return $partial($n - 1) + $partial($n - 2); could become 'partial(n - 1) + partial(n - 2)' Compiling the string lambda to a function can be memoized with the string itself as the key (as many regex implementations do with the regex text) so each is only ever compiled once. [0] http://osteele.com/sources/javascript/functional/ http://osteele.com/sources/javascript/functional/

widmogrod 11y ago

Have you seen this project? https://github.com/widmogrod/php-functional https://github.com/widmogrod/php-functional Tackle problem same problem as your library, also in PHP.