andymatuschak.org: Asides

This article was published on Wednesday, December 12th, 2007 at 10:58 pm.

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RubyCocoa Parses Multiple Return Values!

RubyCocoa parses Cocoa methods that return multiple values through pointer parameters! Check it out:

>> NSWorkspace.sharedWorkspace.getFileSystemInfoForPath_
isRemovable_isWritable_isUnmountable_description_
type_("/Volumes/SparkleCaster/English.lproj")
=> [true, 1, 0, 1, #<NSCFString "hfs">, #<NSCFString "hfs">]

Now we’ve just got to do something about that really ugly method name…

The Conversation {2 comments}

  1. Chris Ryland 13 December, 07 @ 6:23 am

    I think there’s always going to be a disconnect between non-Objective-C interfaces to Cocoa for exactly this reason (the message-passing syntax). You can paper over it with dictionary-style name/value mapping, etc., but it’ll never be as good as the original.

    That’s why I’m off designing a new dynamic language that exactly matches Objective-C’s syntax & general semantics… ;-)

  2. Andy Matuschak 13 December, 07 @ 10:58 am

    Ohman, another one? :)

    I like Nu in theory, but native arrays and hashes are important to me and, well, I find myself having a lot of trouble keeping a sense of scope in big s-exprs.

    But yeah, there will always be some level of disconnect. Unless… maybe Ruby 2.0’s named parameters will help.

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