[MacRuby-devel] thread-safety and collections in macruby

[Terry Moore]

If you're not wring/changing the array no problems. But to be safe use Object#freeze...

Terry Moore

On 19/10/2011, at 6:26 PM, Michael Johnston <lastobelus at mac.com> wrote:

> Note, in my example I can also guarantee that none of the elements in b are going to be changed (for example, an array of strings)
> Cheerio,
> 
> Michael Johnston
> lastobelus at mac.com
> 
> 
> 
> 
> On 2011-10-18, at 10:17 PM, Michael Johnston wrote:
> 
>> In ObjC, the immutable collections are threadsafe.
>> 
>> In macruby, are collections threadsafe to read only?
>> 
>> ie, if I do this:
>> 
>> a = [ ...] # an array that may or may not be changed
>> 
>> b = a.dup # nowhere in the code is b ever used to add/delete/change an element
>> 
>> is b thread-safe to read from multiple threads (queued operations/blocks)?
>> 
>> also, is there any difference between doing 
>> 
>> b = a.dup
>> 
>> and
>> 
>> b = NSArray.arrayWithArray(a)
>> 
>> Both result in class Array, so I assume there is no difference.
>> 
>> 
>> 
>> Cheerio,
>> 
>> Michael Johnston
>> lastobelus at mac.com
>> 
>> 
>> 
>> 
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel at lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
> 
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