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Dec 10, 2016 at 16:19 comment added gnasher729 When you copy a reference, you don't actually copy an object. You can have only one singleton, but you can have any number of identical references to that singleton.
Jun 20, 2015 at 18:51 history edited gnat CC BY-SA 3.0
meta details removed
Jun 20, 2015 at 17:49 history edited Nir Friedman CC BY-SA 3.0
Added discussion of reference and value semantics
Jun 20, 2015 at 16:36 history answered Nir Friedman CC BY-SA 3.0