Re: [RFC] Anonymous functions

Hello Ryusuke, +1, looks pretty nice, makes my life easier in some cases and is closer to other languages like pythin so i can transfer concepts easily which is a big plus for me. marcus Thursday, January 10, 2008, 11:09:26 AM, you 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 > */ Best regards, Marcus