Please no factory madness in Swift. This stuff is bad enough in Java - don’t infect Swift with it.
Jan > On 10.12.2015, at 18:23, Jens Alfke via swift-users <swift-users@swift.org> > wrote: > > >> On Dec 10, 2015, at 7:26 AM, Harlan Haskins via swift-users >> <swift-users@swift.org <mailto:swift-users@swift.org>> wrote: >> >> IIRC this isn’t possible because there’s no Runtime to query for classnames >> (it’s inherently unsafe anyway). > > It’s not unsafe if you specify a base class/protocol that the loaded class > must conform to. > >> You might want to look into a better way of doing that you’re trying to do. > > I disagree with “a better way” — “a workaround” is how I’d rephrase it. This > kind of dynamism is often the best tool for the job, and a lot of Cocoa > developers are frustrated by its absence in Swift. For example, there’s a > series of blog posts from earlier this year by the highly respected Brent > Simmons [NetNewsWire, MarsEdit, Glassboard, etc., currently at Omni]: > http://inessential.com/swiftdiary <http://inessential.com/swiftdiary> > > http://inessential.com/2015/07/20/swift_diary_1_class_or_struct_from_str > <http://inessential.com/2015/07/20/swift_diary_1_class_or_struct_from_str> > > The workaround I’d suggest is a factory function that contains a switch > statement that matches class names and returns newly initialized instances. > > —Jens > > _______________________________________________ > swift-users mailing list > swift-users@swift.org > https://lists.swift.org/mailman/listinfo/swift-users
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