elandesign (Paul Smith)
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08/31/2017
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10:21 PM Ruby Bug #13855: Hash#compact! returns nil if the hash is empty
- lucasbuchala (Lucas Buchala) wrote:
> Rather than a bug, I wonder if this is just a documentation omission.
> ...
Oh that's interesting - I hadn't noticed that returning nil if the object was unchanged was the actual behaviour there. I... -
- This behaviour feels like a bug to me.
From the documentation (with my emphasis):
> compact! → hsh
> ...
However if the hash contains no keys, the method returns nil.
~~~
irb(main):001:0> {}.compact!
=> nil
# For Compariso...