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

[Michael Johnston]

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
> 
> 
> 
> 
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