From: Gene Tani <gene.tani@...>
Date: 2005-11-01T00:02:08+09:00
Subject: Re: determining whether an object is an immediate?

(pls ignore prior 2 posts, I'm still mulling over how __id__'s work for
immed. values )
############## benchmark round 3
OBJECTS = [1, 3.14159, [], :sym, "astring", true, {}, false, 1..3, nil,
/x/]
ITERATIONS = 10000
IMMED_CLASSES=[Fixnum, Symbol, TrueClass, FalseClass, NilClass]
bm(2) do |x|
        x.report("VClass ") do
                ITERATIONS.times do
                        OBJECTS.each do |obj|
                                begin
                                        class<<obj; end
                                rescue TypeError
                                        # nothing
        end;    end;    end;    end
        x.report("===    ") do
                ITERATIONS.times do
                        OBJECTS.each do |obj|
                                if obj=== IMMED_CLASSES
                                                # nothing
                                else
                                                # nothing
        end;    end;     end;   end
        x.report("===2   ") do
                ITERATIONS.times do
                        OBJECTS.each do |obj|
                                if  IMMED_CLASSES===obj
                                                # nothing
                                else
                                                # nothing
        end;    end;     end;   end
        x.report("cl_incl") do
                ITERATIONS.times do
                        OBJECTS.each do |obj|
                                if IMMED_CLASSES.include?(obj.class)
                                                # nothing

                                else
                                                # nothing

        end;    end;     end;   end

        x.report("objSpac") do
                ITERATIONS.times do
                        OBJECTS.each do |obj|
                            begin
                                if ObjectSpace.include?(obj)
                                   # nothin
                                end
                            rescue TypeError
                                # noting
        end;    end;    end;end
end
######################
WinXP, 1.8.2 from 1-click installer, cut/pasted out of Komodo 3.5 alpha

        user     system      total        real
VClass   0.922000   0.000000   0.922000 (  0.922000)
===      0.672000   0.000000   0.672000 (  0.672000)
===2     0.219000   0.000000   0.219000 (  0.219000)
cl_incl  0.187000   0.000000   0.187000 (  0.187000)
objSpac  4.453000   0.000000   4.453000 (  4.453000)
Gene Tani wrote:
> I'm confused,