errorp = Pointer.new_with_type("@") result = NSXMLDocument.alloc.initWithData(data, options:NSXMLDocumentValidate, error:errorp) # access error errorp[0] On 26 Apr 2009, at 16:36, Alex Vollmer wrote:
Is it possible to use "out" parameters with MacRuby, such as NSError? In my particular case I'd like to capture errors that result from parsing XML with NSXMLDocument using the initWithData:options:error: method. I tried (naively) just instantiating an NSError instance and handing it to that method, but ended up with this:
irb(main):037:0> e = NSError.new => #<NSError:0x80067cc40> irb(main):038:0> doc = NSXMLDocument.alloc.initWithData(data, options:NSXMLDocumentValidate, error:e) ArgumentError: can't convert Ruby object `#<NSError:0x80067cc40>' to Objective-C value of type `^@' from (irb):38:in `initWithData:options:error:' from (irb):38 from /usr/local/bin/macirb:12:in `<main>'
Any help or insight is appreciated.
Cheers,
Alex ---- Musings & Notes — http://alexvollmer.com Track what you lend and borrow — http://moochbot.com
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