And +1 from me :)

David

Am 23.02.2008 um 12:43 schrieb Marcus Boerger:

Hello Andrei,

+1

Friday, February 22, 2008, 7:00:11 PM, you wrote:

Yes, let's re-open, I'd like to get a closure on that issue (pun
intended).

-Andrei

Hi All,

I second this. Can we please re-open the discussion on anonymous
functions as well as closures. That would be an awesome feature.
create_function is a bit ugly semantically to be sufficient for all
anonymous function needs.

Thanks,
Mat

KOYAMA Tetsuji wrote:

Hi lists,

Is this discussion stopping?

I want this feature in PHP. Please start to talk.

[...]

2008/1/6, Marcus Boerger helly@php.net:

[...]

I like the anonymous function patch too. It is clean and simple.
Maybe you
want to start a second '[RFC] Anonymous functions' thread with
that patch.

Can you also please add tests for both?

marcus

Best regards,
Marcus

Do we have a working patch somewhere then?

-Andrei

Hello Andrei,

+1

Friday, February 22, 2008, 7:00:11 PM, you wrote:

Yes, let's re-open, I'd like to get a closure on that issue (pun
intended).

-Andrei

To be clear, my statement was about the closures and not sexier
anonymous functions. I agree that we need to do an RFC on this matter.

-Andrei

I think we have to be very clear whether we are going to provide
just a
sexier notation for anonymous functions or closures (and if the latter
what the semantics are).
Just doing one and not figuring out the long term piece doesn't make
sense because we may end up having two completely distinct features
and/or feature creep over the next year which doesn't make much
sense to
me.

I think in last discussion most ppl just preferred a sexier anonymous
function esp. as there weren't very clear/clean proposals for how
closures would work in PHP and what the benefits would be.

So I definitely suggest to have a discussion, maybe RFC based like
Stefan did but really decide once and for all on where we'd like to go
with this. We all know that no features map 1:1 to PHP and there are
always unique behaviors of our language and environment which
require a
fresh view at things.

Hello Andi,

my understanding was that we did not like the anon function syntax sugar
and could not agree on a feature set for closures upfront and thus decided
to disagree and not do anything. Now that the topic came up again it seems
that we actually should work on an agreeable featureset in a form of a RFC.

My current opinion is that we should have a local scope created on anon
function creation that would even contain $this. Now this is even more so
premature so I lea ve it for a RFC.

What we need is someone to start that RFC, any volunteers?

marcus

Saturday, February 23, 2008, 8:36:18 PM, you wrote:

I think we have to be very clear whether we are going to provide just a
sexier notation for anonymous functions or closures (and if the latter
what the semantics are).
Just doing one and not figuring out the long term piece doesn't make
sense because we may end up having two completely distinct features
and/or feature creep over the next year which doesn't make much sense to
me.

I think in last discussion most ppl just preferred a sexier anonymous
function esp. as there weren't very clear/clean proposals for how
closures would work in PHP and what the benefits would be.

So I definitely suggest to have a discussion, maybe RFC based like
Stefan did but really decide once and for all on where we'd like to go
with this. We all know that no features map 1:1 to PHP and there are
always unique behaviors of our language and environment which require a
fresh view at things.

Andi

-----Original Message-----
From: Andrei Zmievski [mailto:andrei@gravitonic.com]
Sent: Friday, February 22, 2008 10:00 AM
To: Matvey Arye
Cc: KOYAMA Tetsuji; internals@lists.php.net
Subject: Re: [PHP-DEV] [RFC] Anonymous functions

Yes, let's re-open, I'd like to get a closure on that issue (pun
intended).

-Andrei

Hi All,

I second this. Can we please re-open the discussion on anonymous
functions as well as closures. That would be an awesome feature.
create_function is a bit ugly semantically to be sufficient for all
anonymous function needs.

Thanks,
Mat

KOYAMA Tetsuji wrote:

Hi lists,

Is this discussion stopping?

I want this feature in PHP. Please start to talk.

On Jan 10, 2008 7:09 PM, Ryusuke SEKIYAMA rsky0711@gmail.com
wrote:

Hello, lists,

We have discussed about implementing anonymous functions and
closures in PHP.
However, I consider that implementing anonymous functions and
implementing lexical scopes should be discussed separately.

Even though I like closure. ;-)

So I wrote anonymous function patch for PHP 5.3 and 6.0.

Patches (inlcude tests):
for PHP 5.3: http://www.opendogs.org/pub/php-5.3dev-080109-
anon.patch
for PHP 6.0: http://www.opendogs.org/pub/php-6.0dev-080109-
anon.patch

Featues:

• Unlike create_function(), there is no need to take care of
  quotes, backslashes and dollars .
• Can be used in loop, but be compiled only once.
• Supports recursive call using FUNCTION.
• Supports inline execution. It works like a block scope.
• Works with opcode caches.
  Since I couldn't build APC against PHP 5.3, I have tested
  PHP 5.2.5 + anonymous function patch and APC 3.0.16.

Example:
<?php
// callback
$arr = array(5, 3, 6, 0);
usort($arr, function($a, $b){ return $a - $b; });
print_r($arr); // 0, 3, 5, 6

// assign to a variable
$lambda = function(){
echo "Hello, World!\n";
};
$lambda(); // "Hello, World!"

// inline execution
$result = function($a, $b){
return $a + $b;
}(1, 2);
var_dump($result); // "int(3)"
?>

The anonymous function name is composed of '\0',
"ZEND_ANON<#serial>",
filename and character position.

• Leading '\0' blocks to be displayed by get_defined_functions().
• "ZEND_ANON<" helps determine wheter the function is anonymous
  or not
  because '<' cannot be used for user-defined function name.
• Serial number and file informations make the name unique.
• char anon_key_buf[32] is long enough because
  `snprintf(anon_key_buf, 32, "ZEND_ANON<%llu>", (unsigned long
  long)UINT64_MAX)'
  returns 31.

Regards,

2008/1/6, Marcus Boerger helly@php.net:

Hello Stanislav,

tha makesw three then already, how about we ask around again?
Ryusuke, can you please start a new '[RFC] Square brackets
shortcut' thread
to collect opinions and pass along the patch for that?

I like the anonymous function patch too. It is clean and simple.
Maybe you
want to start a second '[RFC] Anonymous functions' thread with
that patch.

Can you also please add tests for both?

marcus

Wednesday, January 2, 2008, 7:51:06 PM, you wrote:

the square bracket array syntax patch for PHP 5.3,
http://www.opendogs.org/pub/php-5.3dev-080101-sbar.patch

I remember we discussed that already and it was rejected then
(even
though myself and Andi liked it) - did the people that objected
then
change their minds?

Best regards,
Marcus

--
/**

• Ryusuke SEKIYAMA
• rsky0711@gmail.com
  */

--

KOYAMA, Tetsuji
koyama@hoge.org

--

--

Best regards,
Marcus