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0 pointsviraptor6y ago0 comments

It applies to Ruby as well, just in different cases:

    irb(main):020:0> 10.0.__id__
    => 81064793292668930
    irb(main):021:0> 10.__id__
    => 21
    irb(main):022:0> 10==10.0
    => true

And for very large numbers:

    irb(main):031:0> 1e200.__id__
    => 340
    irb(main):032:0> 1e200.__id__
    => 360

So it's a different threshold and different cases, but as a general rule, "equality and identity are different" still holds.

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1 comments · 1 top-level

matheusmoreira6y ago

Yes. Floating point numbers cannot be folded into object pointers and are always copied into newly allocated objects. Integers larger than ((sizeof(long) * CHAR_BIT) - 1) will actually become an arbitrary precision integer object.

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