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 <lastobe...@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 > lastobe...@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 >> lastobe...@mac.com >> >> >> >> >> _______________________________________________ >> 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 _______________________________________________ MacRuby-devel mailing list MacRuby-devel@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
