Re: [RFC] Nullable Casting

From: Date: Mon, 08 Apr 2019 16:17:19 +0000
Subject: Re: [RFC] Nullable Casting
References: 1 2 3  Groups: php.internals 
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> Le 8 avr. 2019 à 07:05, David Rodrigues <david.proweb@gmail.com> a écrit : > > And about "settype($variable, "?int")" it was requested on original mailing > by Claude Pache. PHP has several ways to perform casting: 1. (int) $foo 2. settype($foo, 'int'); 3. intval($foo) They are occasions where the programmer will prefer one method to the other. For example: 1. foo((int) $bar) 2. settype($someNonTrivial[$expr]['ession'], 'int'); 3. array_map('intval', $foo) The intval($foo) family of functions might be replaced by function ($foo) { return (int) $foo; } (or maybe soon by fn($foo) => (int) $foo), so that it might not be a necessity to double them with intvalIfNotNull($foo), etc. functions (also, finding a good name is not evident). But as for settype(), it cannot be replaced by casting syntax in case the target type is not written literally in source code; so that we should continue to fully support it. (And see https://externals.io/message/103779#103805 <https://externals.io/message/103779#103805> for real world usages.) —Claude

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