Hi,
Am 14.10.2009 um 11:04 schrieb Laurent Sansonetti:
Hi,
On Oct 14, 2009, at 1:03 AM, 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.
You can simply pass true or false and MacRuby will do the conversion
for you.
Oh yes, in my example project , I automatically used true and it
worked. But then I began asking myself, how can I be shure that this
is the correct way and what would an absolute beginner do and then i
opened macirb... ;-)
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!
And NSNumbers are converted to Ruby types as you just experienced :)
In the docs
+ (NSNumber *)numberWithBool:(BOOL)value
gives a NSNumber and not a TrueClass or FalseClass as in Macruby. I
only wanted to say how impressed I am!
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).
I think a short tutorial/page on the website would be great, indeed.
I don't believe it is easily possible to write an Objective-C ->
MacRuby convertor that works most/all the time (because of the C
nature of ObjC).
Such a cheat sheet can easily show the beauty of MacRuby and the
"noisiness" of Obj-C! ;-)
I agree that a real translator is impossible. What I want is a simple
text processing which removes all the [foo: bar baz] and replaces it
with foo.bar(baz).
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)
I replied to the ticket, it seems you forgot to do `framework
'Foundation'' first.
Oh, my fault! But wouldn't it be better NOT to respond with a segment
fault (this irritated me) and instead throw an normal ruby exception?
(But perhaps that is impossible.)
Bernd
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