Re: [RFC] [DISCUSSION] Type casting in array destructuring expressions

From: Date: Thu, 26 Mar 2020 12:49:50 +0000
Subject: Re: [RFC] [DISCUSSION] Type casting in array destructuring expressions
References: 1 2 3  Groups: php.internals 
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On Thu, 26 Mar 2020 at 12:39, Enno Woortmann <enno.woortmann@web.de> wrote: > > $handle = fopen('test.csv', 'r'); > while (($data = fgetcsv($handle)) !== false) { > [int $id, string $data, int $year] = $data; > // do something with the correctly typed variables > } > > The code would trigger a fatal error when strict_types are enabled. With > strict_types disabled it would behave identically as the currently > proposed casts. > As I mentioned in a previous e-mail, if it followed current strict_types=0 semantics, it would error if the input row was something like "42,hello,not-a-valid-year". Following standard cast semantics, that input would instead silently give you a value of 0 in $year, which is often not what you want. Regards, -- Rowan Tommins [IMSoP]

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