# new feature -> with() - Thread: https://externals.io/message/32721 - Original archive: https://news-web.php.net/php.internals/32721 - Started by Sebastian on 2007-10-09T19:12:05+00:00 - Messages: 5 - Reply by email to internals@lists.php.net - More for agents: search with https://externals.io/search.md?q={query} · JSON API at https://externals.io/api · documentation at https://externals.io/llms.txt --- ## #32721 — Sebastian — 2007-10-09T19:12:05+00:00 URL: https://externals.io/message/32721#32721 hi, i think it would be really handy to introduce the `with()` feature from JavaScript (and probably other OOP languages) into php. so for sample the following --------------------------- $class=new class; $class->do_something(); $class->do_more(); $class->do(); --------------------------- could be made easier and more readable: --------------------------- $class=new class; with($class) { do_something(); do_more(); do(); } --------------------------- greetings Sebastian --- ## #32722 — Richard Black — 2007-10-10T14:04:10+00:00 URL: https://externals.io/message/32721#32722 · In reply to: #32721 I'm usually a lurker on here, but thought I'd through in my 2p on this one... Delphi (Object Pascal) has a similar feature, that I've had some experience of using, and I never liked it. Why? Because it only leads to confusion, mainly because the separation of object and method leaves you unsure of what is actually being called. Consider the following: function do() { echo "hello"; } $class=new class; with($class) { do_something(); do_more(); do(); } Now, within my `with()`, am I calling the class method do() or the function do()? Not clear at first glance. And the whole thing gets even more complex if you can start nesting `with()` constructs. I suspect this wouldn't be trivial to implement, and for me it doesn't add any value - only potential confusion. ========================================== Richard Black - Senior Consultant DataVisibility Ltd Tel. 020 7917 9570 http://www.datavisibility.com/ ------------------------------------------------------------------------ -------------------- Registered Office: 212 Piccadilly, London, W1J 9HF Registered in England No. 5891154 VAT No. 8877891834 This document should only be read by those persons to whom it is addressed. Its contents are private and confidential. If you receive this email in error, please notify the sender immediately and do not disclose, copy or distribute this message, or open any attachments. -----Original Message----- From: Sebastian [mailto:sebastian@ifyouwantblood.de] Sent: 09 October 2007 20:12 To: internals@lists.php.net Subject: [PHP-DEV] new feature -> `with()` hi, i think it would be really handy to introduce the `with()` feature from JavaScript (and probably other OOP languages) into php. so for sample the following --------------------------- $class=new class; $class->do_something(); $class->do_more(); $class->do(); --------------------------- could be made easier and more readable: --------------------------- $class=new class; with($class) { do_something(); do_more(); do(); } --------------------------- greetings Sebastian -- To unsubscribe, visit: http://www.php.net/unsub.php --- ## #32726 — Ralph Schindler — 2007-10-10T16:08:52+00:00 URL: https://externals.io/message/32721#32726 · In reply to: #32721 > --------------------------- > $class=new class; > > with($class) > { > do_something(); > do_more(); > do(); > } What more value does this hold over implementing fluent interfaces which are already possible? Assuming class Foo { public function doSomething() { /**code**/ return $this; } public function doMore() { /**code**/ return $this; } public function doDo() { /**code**/ return $this; } } You can do this: $bar = new Foo() $bar->doSomething()->doMore()->doDo(); or, if you want exceptional fallthrough: try { $bar->doSomething() ->doMore() ->doDo(); } catch (Exception $e) { ... } -ralph --- ## #32740 — Sebastian — 2007-10-12T20:28:02+00:00 URL: https://externals.io/message/32721#32740 · In reply to: #32721 hi, wow, thats what you're writing is a chain call. this only works, if the methods of a class return the object $this. but if you need a return value other than $this, simply there is no real way. and moreover i don't agree with the other arguments. what i'm suggesting is, that in `with()`{} you are only allowed to use the methods and variables defined in the object you are using `with()`. as in the sample, you are not using any global functions or else. my opinion is, this it is especially with $this very useful. greetings ----- Original Message ----- From: "Ralph Schindler" To: "Sebastian" Cc: Sent: Wednesday, October 10, 2007 6:08 PM Subject: Re: [PHP-DEV] new feature -> `with()` > > > […] > > What more value does this hold over implementing fluent interfaces which > are already possible? > > Assuming > class Foo { > public function doSomething() { /**code**/ return $this; } > public function doMore() { /**code**/ return $this; } > public function doDo() { /**code**/ return $this; } > } > > You can do this: > > $bar = new Foo() > $bar->doSomething()->doMore()->doDo(); > > or, if you want exceptional fallthrough: > > try { > $bar->doSomething() > ->doMore() > ->doDo(); > } catch (Exception $e) { > ... > } > > -ralph --- ## #32846 — Hartmut Holzgraefe — 2007-10-18T07:54:39+00:00 URL: https://externals.io/message/32721#32846 · In reply to: #32740 Sebastian wrote: > [...] what i'm suggesting is, > that in `with()`{} you are only allowed to use the methods and variables > defined in the object you are using `with()`. as in the sample, you are not > using any global functions or else. this would render 'with' mostly useless as in most real world situations where a 'with' block might make sense it wouldn't be standalone but would at least require some basic function calls to be of use ... so with this limitation in place i'd like to revert my previous -0.9 to a strong -1 -- Hartmut Holzgraefe, Principal Support Engineer . 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