[MacRuby-devel] Creating ruby objects in Objective-C

Eloy Duran eloy.de.enige at gmail.com
Mon Jan 17 09:36:21 PST 2011


You're welcome Alan :)

Hmm, I wonder if this big impact is because of skipping evaling everytime, which iirc is the only thing that evaluateString does, or something else is happening... Have you also tried doing [rubyClass new] instead of alloc init? I thought they should do the same.

On 17 jan. 2011, at 15:57, Alan Skipp <al_skipp at fastmail.fm> wrote:

> Brilliant suggestion Eloy, much appreciated.
> There's a noticeable improvement in speed using this technique. In the method which added ruby objects to an array, 77% of the time was spent on initialising the objects, that's now down to 35%.
> 
> Alan
> 
> On 17 Jan 2011, at 13:32, Eloy Durán wrote:
> 
>> After the Ruby code that defines the class has been evaled, you should be able to do the following:
>> 
>> Class rubyClass = NSClassFromString(@"RubyClass");
>> id rubyObject = [[rubyClass alloc] init];
>> 
>> On Jan 17, 2011, at 2:05 PM, Alan Skipp wrote:
>> 
>>> Hi,
>>> Is there any way to inform an Objective-C class of the existence of a ruby class so that instances can be created in Objective-C code?
>>> Currently I am doing the following:
>>> 
>>> [[MacRuby sharedRuntime] evaluateString:[NSString stringWithFormat:@"RubyClass.new('%@')", arg]];
>>> 
>>> If I'm adding quite a few objects (300+) to an array in a loop, this line of code is quite slow. My assumption (which may be false) is that either of the 3 options below would be quicker.
>>> 
>>> [RubyClass performSelector:@selector(new:) withObject:arg];
>>> [RubyClass new:arg];    
>>> [[RubyClass alloc] initWithArg:arg];   
>>> 
>>> Are any of those options (or an equivalent) a possibility?
>>> 
>>> Alan
>>> _______________________________________________
>>> MacRuby-devel mailing list
>>> MacRuby-devel at lists.macosforge.org
>>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
>> 
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel at lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
> 
> _______________________________________________
> MacRuby-devel mailing list
> MacRuby-devel at lists.macosforge.org
> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel


More information about the MacRuby-devel mailing list