Hi Bernd, YES and NO in ObjC are translated to true and false in MacRuby. so you were probably after: NSNumber.numberWithBool(false) (I am curious as to how often that is useful actually) I will leave the table idea for others to comment - I actually think in the end there are only a few rules to learn and then you will find yourself translating easily (not that those rules should not go in a cheat sheet somewhere - that's probably a good idea). With: NSDictionary.dictionaryWithObjectsAndKeys "a", "b", nil I assume that in the original ObjC method is actually passing an array which (it seems) must be terminated by a nil (in objC). I actually ran across this in another context - passing objects in this way - again I will leave others to comment on it, perhaps it is an issue. However why can't you use : dict = {"b"=>"a"} => {"b"=>"a"} #check class of created dictionary dict.class => NSMutableDictionary Why use the long winded ObjC form? If you need a immutable NSDictionary for some reason: dict = NSDictionary.alloc.initWithDictionary({"a"=>"b", "c" => "d"}) #or if you like typing dict = NSDictionary.dictionaryWithObjects(["b","d"], forKeys: ["a","c"],count:1) (and many other similar methods, I am sure) works fine. Cheers, John On Oct 14, 2009, at 10:03 , B. Ohr wrote:
Hi all!
Using Cocoa in MacRuby is sometimes a hard job, because all documentation, examples and sample code is Obj-C. For example, I found this piece of code '[NSNumber numberWithBool:NO]' and asked myself how to write that in Macruby.
I opened macirb and typed:
NSNumber.numberWithBool 0 => false
First I had to laugh and then I thought: Hey implementors of macruby, you really did a great job!
What do you think about a table on http://www.macruby.org/ which lists all such short (and astonishing) examples. Or even better, why not create a command in the services menu which translates a Obj-C sequence (by regexp).
BTW, the second example I tried is:
NSDictionary.dictionaryWithObjectsAndKeys "a", "b", nil
but instead of {"b"=>"a"} I got a seg fault! (ticket is filed)
Greets, Bernd
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