You are right, still a gotcha tho:
Ruby 1.9.2:
def foo(a, b={})
b[:handler].call if b.has_key?(:handler)
end
foo :bar, handler: Proc.new do
puts 42
end
`new': tried to create Proc object without a block (ArgumentError)
def foo(a, b={})
b[:handler].call if b.has_key?(:handler)
end
foo :bar, handler: Proc.new{
puts 42
}
Works fine.
I guess this is due to the fact that we are using CRuby's parser.
I got a bit confused because MacRuby allows you to define methods like that:
def foo(a, b:handler)
handler.call
end
foo :bar, b: Proc.new{ puts 42 }
Which is an extension of the Ruby syntax.
Anyways, thanks for the heads up, I didn't notice it got fixed in 0.8
- Matt
On Sun, Jan 9, 2011 at 2:44 PM, Laurent Sansonetti <lsansone...@apple.com>wrote:
> This seems to be a Ruby syntax point, unrelated to MacRuby.
>
> Laurent
>
> On Jan 9, 2011, at 2:32 PM, Matt Aimonetti wrote:
>
> Laurent you are right, however I noticed a little gotcha:
>
> If you use the following code:
>
> panel.beginSheetModalForWindow window, completionHandler: Proc.new do
> |result|
> return if (result == NSCancelButton)
> path = panel.filename
> dest_path = applicationSupportFolder
> guid = NSProcessInfo.processInfo.globallyUniqueString
> dest_path = "#{dest_path}/#{guid}"
> error = Pointer.new(:id)
> NSFileManager.defaultManager.copyItemAtPath(path, toPath:dest_path,
> error:error)
> NSApp.presentError(error) if error[0]
> movie.setValue(dest_path, forKey:"imagePath")
> end
>
> You get an argument error: tried to create Proc object without a block
> (ArgumentError)
>
> However using the curly brackets would work:
>
> panel.beginSheetModalForWindow window, completionHandler: Proc.new{|result|
> return if (result == NSCancelButton)
> path = panel.filename
> dest_path = applicationSupportFolder
> guid = NSProcessInfo.processInfo.globallyUniqueString
> dest_path = "#{dest_path}/#{guid}"
> error = Pointer.new(:id)
> NSFileManager.defaultManager.copyItemAtPath(path, toPath:dest_path,
> error:error)
> NSApp.presentError(error) if error[0]
> movie.setValue(dest_path, forKey:"imagePath")
> }
>
> Finally, the only way to get the do/end proc approach to work is to use the
> parenthesis around the arguments:
>
> panel.beginSheetModalForWindow(window, completionHandler: Proc.new do
> |result|
> return if (result == NSCancelButton)
> path = panel.filename
> dest_path = applicationSupportFolder
> guid = NSProcessInfo.processInfo.globallyUniqueString
> dest_path = "#{dest_path}/#{guid}"
> error = Pointer.new(:id)
> NSFileManager.defaultManager.copyItemAtPath(path, toPath:dest_path,
> error:error)
> NSApp.presentError(error) if error[0]
> movie.setValue(dest_path, forKey:"imagePath")
> end)
>
> - Matt
>
> On Sun, Jan 9, 2011 at 2:22 PM, Laurent Sansonetti
> <lsansone...@apple.com>wrote:
>
>> Hi Rolando,
>>
>> The syntax is simple, you simply pass a Proc project.
>>
>> Here is an example:
>>
>> framework 'Foundation'
>> a = [1, 2, 3, 4, 5]
>> a.enumerateObjectsUsingBlock(Proc.new { |obj, index, stop|
>> p obj
>> stop.assign(true) if index == 2
>> })
>>
>> It looks like the snippet you pasted should just work. Did you find a
>> problem?
>>
>> Laurent
>>
>>
>> On Jan 9, 2011, at 8:09 AM, Rolando Abarca wrote:
>>
>> Hi all,
>>
>> I've taken a look at the referred issue (#712), but I'm not sure of
>> the final implemented syntax. I'm trying to use a NSOpenPanel, so far
>> this is what I'm doing:
>>
>>
>> {{{
>> def loadSprite(sender)
>> @panel.beginSheetModalForWindow(@window, completionHandler:lambda {
>> |code|
>> NSLog("code: #{code}")
>> })
>> end
>> }}}
>>
>> what's the Right Way(tm) to use a NSOpenPanel?
>> thanks!
>> --
>> Rolando Abarca M.
>> Games For Food S.p.A.
>> http://www.gamesforfood.com
>> Phone: +1 (408) 345-5433
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel@lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
>>
>>
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel@lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>>
>>
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>
>
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