On Thursday, 17 April 2014 at 08:05:42 UTC, Ola Fosheim Grøstad
wrote:
On Thursday, 17 April 2014 at 06:56:11 UTC, Paulo Pinto wrote:
There is a reason why Dalvik is being replaced by ART.
AoT compilation?
Not only. Dalvk was left to bit rotten and has hardly seen any
updates since 2.3.
Btw, AFAIK the GC is deprecated for Objective-C from OS-X 10.8.
Appstore requires apps to be GC free... Presumably for good
reasons.
Because Apple sucks at implementing GCs.
It was not possible to mix binary libraries compiled with GC
enabled and with ones compiled with it disabled.
I already mentioned this multiple times here and can hunt the
posts with respective links if you will.
The forums were full of crash descriptions.
Their ARC solution is based on Cocoa patterns and only applies to
Cocoa and other Objective-C frameworks with the same lifetime
semantics.
Basically the compiler inserts the appropriate [... retain] /
[... release] calls in the places where an Objective-C programmer
is expected to write them by hand. Additionally a second pass
removes extra invocation pairs.
This way there is no interoperability issues between compiled
libraries, as from the point of view from generated code there is
no difference other that the optimized calls.
Of course it was sold at WWDC as "ARC is better than GC" and not
as "ARC is better than the crappy GC implementation we have done".
--
Paulo
