If people wants to harvest some changes from Squeak, please do it.
Collections
Speed up testing different sized strings.
Interval >> #sum is now O(1) instead of O(n).
Introduction of Set>>#addNewElement: optimizes graph-traversal.
Slightly faster SequenceableCollection >> #copyUpT (for
ByteString receivers).
Stricter and faster implementation of String >> #format:.
Optimized Interval >> #sum, OrderedCollection >> #at: and
OrderedCollection >> #at:put:.
Simpler and faster Character >> #tokenish.
Speed-up #endsWith: for strings.
Morphic
Sped up #valueOfProperty:ifAbsent: and friends.
Symbol table improvements such as thread-safety and consistent
enumeration.
Threadsafe random.
Squeak 4.6 "Spur" Release Notes
http://wiki.squeak.org/squeak/6192
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Cheers,
Sean
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