guilhermebla...@gmail.com wrote on 20/04/2016 03:54:
1- Even though mentioned, I'd still use "extends" or "implements" instead of "is" (which would be a new pseudo-reserved keyword) to enforce data type consistency and prevent developers to potentially referring to one thing while consider another.
Perhaps "instanceof" would make more sense here? "class FileProcessor<T extends FileHandle>" seems to exclude instantiating FileProcessor<FileHandle>, because "FileHandle extends FileHandle" doesn't make any sense.
You could read "class Box<T instanceof Boxable>" as an assertion that the class passes the constraint, as in "public function __construct(T $t) { assert($t instanceof Boxable); }"
Regards, -- Rowan Collins [IMSoP] -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
