Any reason why "(ref $class || $class)" is deprecated?

It can make the semantics of your constuctor confusing. If I want a new object of class Foo then I want to call Foo->new. I'd probably expect $foo->new to clone $foo, but if the class author wanted that functionality they should have created an object method called "clone" or something like that.

In general, it's a good idea to have class methods and object methods completely separate from each other. The ref $class || $class idiom breaks that distinction.

It is useful if you want a new instance based on the same class as an existing object, without having to hard-code the class name.

Well, you can always use (ref $foo)->new if that's what you want.

--
<http://www.dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re^3: bless with => separated args by davorg
in thread bless with => separated args by jaa

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