Ellery Newcomer <ellery-newco...@utulsa.edu> wrote:

I forget, why are we supposed to use is instead of == with null?

'[] is null' compares ptr and length, while '[] == null' compares only
the length. Weirdly though, '[] is null' is false for ptr == 0,
length != 0. Not likely to happen much in practice.

--
Simen

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