ra’s avatarra’s Twitter Archive—№ 33,960

      1. noodling around with anonymous mutable structs in clojure. idea: hashmaps can be turned into instances of auto-generated mutable types.
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    1. …in reply to @ra
      @timsgardner already landed really good named mutable types in @arcadiaunity, but im playing around with something more a la carte
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  1. …in reply to @ra
    @timsgardner @arcadiaunity the actual types are an implementation detail and shouldnt be relied on. they could/should be cached based on map names/types.
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    1. …in reply to @ra
      @timsgardner @arcadiaunity code: gist.github.com/nasser/84548f079cfadc55e3f8647cdd5e5272
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      1. …in reply to @ra
        @timsgardner @arcadiaunity updated to support type cacheing
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        1. …in reply to @ra
          @timsgardner @arcadiaunity not a huge win for read-only operations
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          1. …in reply to @ra
            @timsgardner @arcadiaunity wow, and its *slower* for read-write workloads. man, clojure's data structures are really fast.
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            1. …in reply to @ra
              @timsgardner @arcadiaunity ok, *theres* the win. in the presence of type information, MAGIC can make the mutables ~400x faster to update.
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              1. …in reply to @ra
                @timsgardner @arcadiaunity and ~150x faster than the stock compiler given the same type information ✌🏽
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                1. …in reply to @ra
                  @timsgardner @arcadiaunity faster than transients too. transients were comparable to interop, which makes me think function invocation overhead dominates?
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