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
_______________________________________________
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
