Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:109322 Return-Path: Delivered-To: mailing list internals@lists.php.net Received: (qmail 21233 invoked from network); 26 Mar 2020 07:55:24 -0000 Received: from unknown (HELO php-smtp4.php.net) (45.112.84.5) by pb1.pair.com with SMTP; 26 Mar 2020 07:55:24 -0000 Received: from php-smtp4.php.net (localhost [127.0.0.1]) by php-smtp4.php.net (Postfix) with ESMTP id 334431804E0 for ; Wed, 25 Mar 2020 23:20:14 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on php-smtp4.php.net X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.2 X-Spam-ASN: AS15169 209.85.128.0/17 X-Spam-Virus: No X-Envelope-From: Received: from mail-pl1-f170.google.com (mail-pl1-f170.google.com [209.85.214.170]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by php-smtp4.php.net (Postfix) with ESMTPS for ; Wed, 25 Mar 2020 23:20:13 -0700 (PDT) Received: by mail-pl1-f170.google.com with SMTP id v23so1745932ply.10 for ; Wed, 25 Mar 2020 23:20:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:autocrypt:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=PAI/f1JqPwNLA3182UOLG+VbkM0I+3+TLDoROTHIvuM=; b=AaR091Y1aaD3yEGQ6MFG/DCI/HNx9jWuY2XzFO49NS2z+t2UfqzWg1a5KW20V2yTi+ wtW/iTqOd8pk2G2wosKYPJXmodakcf28NwDloYQ3rJSa5QXH8FP4W2KbsH0DfzeKCaJm 0z6k/UDS3I96sZ7il9aD4/x6zgS6IVsjreMiegDpkLbI3El+C5G1io0s7VaZfIdWTGJr GDfl0mCmd20v3q4TYLALeFM/5Hxj58wyTFh3/maDXcO8Skb4zwbdpwe9r77kBQ0b4Qbx 3WZsmhUPniAE67ajFmVBABibELXiVW0HX0Gz/ZGyDdg6sed2IIgDN4Q5MM/k9aHCa0m7 8EZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=PAI/f1JqPwNLA3182UOLG+VbkM0I+3+TLDoROTHIvuM=; b=rDb7nnQ6XpVzJvDUjsJm/HKyN8n509YnfX6gYGLhzk5JU/csuSEXzHS+K1ycgPZ3iA waLhZhS0AstiQj0LvN/ZYifYm1CjvKOrwN1WtAQS/htIMzkF494mmxDu7ZkfRQkYtucT 6avwfhB7Xzh37PDL7mJ33WXQkFTqPf6nY6no7209TQWX4Li42nYADZZGqbjtOn/K7tFP k35sXImH7mZLHOgPkM6twMbFgqNqIFhW2NFeZg6lGxw0Zm5zTHtIMHMxqI416eSHxVJG CFkA04PFEjcSguTKkWO94I+Im3YxMh4UTgtJ7/hHisz7Cfpk7A/tsEypmbVVL1jhEsRi pRGg== X-Gm-Message-State: ANhLgQ1ilyXg/b0TZdlIpw9TbpgcGngwfrsA5nDdYIjH+mWHqFM6xii+ gbi36CoapGoCm874SUbjWn7BGQfz0Bkc X-Google-Smtp-Source: ADFU+vvpIwlQE3HXUPpIlxC+xCuGqtrCs4R9rK7Umu+kxUChZSyCHImmYt9Ac9wddWKqtOqi1k/ArA== X-Received: by 2002:a17:90b:46d0:: with SMTP id jx16mr1351128pjb.155.1585203611723; Wed, 25 Mar 2020 23:20:11 -0700 (PDT) Received: from Stas-Mac-2.local (c-76-126-84-88.hsd1.ca.comcast.net. [76.126.84.88]) by smtp.gmail.com with ESMTPSA id d3sm823899pfq.126.2020.03.25.23.20.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 Mar 2020 23:20:10 -0700 (PDT) To: David Rodrigues Cc: PHP Internals References: <306b173b-f104-1779-c75f-bbf8262631c4@gmail.com> Autocrypt: addr=smalyshev@gmail.com; prefer-encrypt=mutual; keydata= xsJuBE9mqaARCACFSqcGmNunkjQQu3X+yXnTmFeEkvM4JXZTOBdR8aEevNGmmFEfyvjaDjWi 9hcwp4E/lYtC+P7VsVjM1OSX9eq0jC/lGL0ZyRXek+mNy0n5H1NSuTpf9Y18LMqhc4G+RU+L cNiZ9K0DJuOOvNLPxW7OHZguxb3wdKPXNVa2jyRfJAKm2uaJJMT1mTmFT9a0Q8SKr+mUrrJk uG0H2o6SzrKt8Wwoint1eh67zVsJaJtQFchnEZnlawIcqP2yC4nLGR3MkubowxoEBYCZet18 aHVVRbvpG2Qtob8Lu5xrsGbmXymTkHTdpvkfcJFADa8MzOL90zOxXwbGfbIZOlh5En8jAQCX lfnx2eQL3BSW/6XANa51dbWiEp1d1BAkpGKtZvlk0Qf+M9WAi+9aXMe3xP5krxtgnRNUf2WN 6Zdy2MxL1RRJCFbytLhl0ronC49BsGYVGshdEH8xhBbiIOJKuVZ/DTl9bEm7P9c7CC7iJyVC khUAhouH6xzZQNLR+RU+QebYzXypVfl99Qk7EdMmr/WAZCHLuvanyqepC5EBsa3VnAfQemSN oBeGBKWWLiOsPjvS72+y1z4RUMAfXHn4l/sFMt8zt7/74AmJPwZquV41p4mPO12V4+xPyc6R sB84sfsk2QVivU8w8AkvGQeYjXoz7Iwao95+fWteVzZ36KRQvUckP8pGjHlDXnHxJ0HI1I/k OBZSjwRwUf0dd73y6erPhbLk+gf+NdI3H9KGJBzG5/rVyWKwUeQ9d5ud4jTJRkQGvAP5pg76 vEa9dogbpe4W5Z+0BfbiJSnQmQWSHiZddj/t33ptbup44Ck6ZTgdlmFYMLF1hR47PIZTDKER EuKYGci/vq8snZvEJP9YCw/TtiHcMdrMKcY/+Lp8lQO0GHLPB9glVhnC0db6l1Xpg1CMI8/R ozBMcij30EgATggC/y2zbiqAFoS9FN9nXPbe4phStqABEyeZ+nXudt7PUYTjVgcrqo8bHZCi sBobWC7OnKyUzxVxzUeuPkIfmZuzkLaMw2McQdvwwsNvQ0DzaLP30c1Xsm/7EIYJcOWpzlVJ 5QrdmE0/Bc0yU3RhbmlzbGF2IE1hbHlzaGV2IChQSFAga2V5KSA8c21hbHlzaGV2QGdtYWls LmNvbT7CegQTEQgAIgUCT2aqtAIbAwYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQL3lW vF2gS12XMwD9HuRIolSwIK77u8EY461y2u6sbX36n5/uo/LDQuxoi3sA/0MvpnvzOhv9Iufv vsZEj3E7i3h+iD5648YMwfTFCij+zsFNBE9mqaAQCADfZPMpjZkkGZj3BY/7ApoLq4mwqzbh +CpLXwNn20tFNvSXfb8RdeXvVEb7Scx+W9qYpiaun2iXJgCVH8fgpZpR856ulT1q6uCG++CX ubEvip/eJkZl93/84h04KQJwsgOrAh0Om3OePRn8Pr+++0LNS0EL8uX/YHeTOGOnnmTqYTey SBVFdov6L4mepddfjekicKQqhL7mZh/xuq29JijT0uNNX8v4vDWQDu5dlAcdd+uB3gcXMD/P ginD11zp+6wtrWCm/+yBqpvDwXQX5PGUnwvbRfl7Ay3MmwmoXiecZMg0dwTSc7e0lhB4HGRH ZdBMJB4rHUVGdzqujK/ctOvrAAMFB/0Utb76Qe6sCMlHxVAmeE/fbo7Pi05btZ/x01r67dHf aMSP0riCKJ7M0OW+jAXtu9+z/BVnYisW67WWfxl2cS5tZDgiHgJARXWUOO72+sScHP8KQmTl 1z16gyKbwY3SmyBkwcpOL35nhUWNLy93syPoY6sZUTikr2bZYukHDQ33XBPs4e6MbWKfsa9q aVmnlOF3k5UqChjutfHaEa4Q7VP4wBIpphHBi9MI16oJIzzBPbGl2uoedjwiZ6QeQZnSuOVY ZxU2d3lRA8PrtfFN1VSlpEm/VcAvtieHUYWHN0wOu+cp3Slr5XJVNjTjJhl28SlinMME54mK AGf2Ldr/dRwXwmEEGBEIAAkFAk9mqaACGwwACgkQL3lWvF2gS126EQD/VVd3FgjLKglClRQP zdfU847tqDK4zJjbmRv5vLLwoE0A+wbrQs7jVGU3NrS0AIl5vUmewpp2BKzSkepy23nWmejw Message-ID: <06548e36-461c-69e6-de24-ef94e3198d92@gmail.com> Date: Wed, 25 Mar 2020 23:20:09 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [PHP-DEV] Class cast From: smalyshev@gmail.com (Stanislav Malyshev) Hi! > Actually it is a simplest case, where only a single information was > considered. But you can expand it to something more complex, where > currently you will need create a static method to copy the data, which > is not a normalized way like cast could do. You can always use anonymous functions if callable is needed. > > Or you can increase the type of information when possible. For instance: > > function requiresB(B $b); > > But you have only A $a. > > You can create: > > function __cast($value) { >     if ($value instanceof A) return B($value, 123, M_PI); > } That's not a cast. That's creating new object from another object. Things like this should be an explicit call. Otherwise the meaning of this code is unclear - it pretends that you just change the type, but in fact it's a completely new object which can be entirely unrelated to the old one. Things like that should be explicit. -- Stas Malyshev smalyshev@gmail.com