Re: macOS 10.13 suggestion for init() throws
Re: macOS 10.13 suggestion for init() throws
- Subject: Re: macOS 10.13 suggestion for init() throws
- From: Greg Parker <email@hidden>
- Date: Tue, 28 Feb 2017 13:20:50 -0800
> On Feb 28, 2017, at 4:56 AM, Daryle Walker <email@hidden> wrote:
>
> Could we have a NSDocument.init() that throws in the next macOS? That would translate to a "initWithError" in Objective C (I think). It would be the new primary initializer, with the current one calling it and dropping any error to oblivion.
It is not possible to retroactively change the designated initializers for a class. The designated initializer pattern requires subclasses to cooperate by overriding and calling particular initializers. Changing the designated initializers for a class like NSDocument would break all of its existing subclasses.
--
Greg Parker email@hidden <mailto:email@hidden> Runtime Wrangler
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