2014-04-08 16:04 GMT-03:00 Pharo4Stef <pharo4s...@free.fr>: > In VW there is the concept of object bodies and head now we will eventually > have that with Spur. Maybe clement explained it somewhere in his blog (I > understood the point once and of course I forgot). > > Now I wonder what changed so much between 1.2 and 3.0
Dolphin's #become: uses the same concept. E.g. a become: b Doesn't switch references, but instead "body" pointers in a and b. It is, a becomes b, and b becomes a. i Time microsecondsToRun: [1000 timesRepeat: [String new become: String new ]]. 684 898 663 812 665 Also, there is a #oneWayBecome: which DOES an object table scan, and makes all references to the receiver point to the argument object (it is, a becomes b, and not the other way around). This gets slow directly proportional to the size of the OT. Time microsecondsToRun: [1000 timesRepeat: [String new become: String new ]]. 10936532 Most proxies and stubs implementations in Dolphin uses #become: because it is instantaneous, and the "old" object (b in this) eventually gets garbage collected. Regards. Esteban A. Maringolo
