On 25.10.2016, at 21:45, Chris Muller asqueaker@gmail.com wrote:
Folks there is NO BASIS at the level of Collection for assuming that do: [ : each | ^ false ] is faster than ^self size=0. In fact, the proper assumption is the opposite -- that #size is the optimized method, not #do:.
I don't understand on what _either_ performance-assumption is grounded. Since I've apparently not been around since the early years of either ST-80 or Squeak, can someone enlighten me here?
Both ways seem somewhat reasonable: `self size = 0` is simple, easy to understand on first sight and said here to be more expensive than `self do: [:ea | ^false]`, which is clever[1], possibly needs a double-take (or comment), but has a certain appeal of wholeness[2].
Best regards -Tobias
[1]: sadly, cleverness in software typically is a drawback. [2]: I mean, the minimalism that is possible by just using/providing #do: somehow conveys closure/completeness