[TYPO3-core] RFC: fix IRRE in workspaces

[Michael Stucki]

Hi Masi,

> > => $updateToUid is never >0 when it is not an integer value!
>
> The original code had the ! around the whole expression:
> !(a && b).
>
> After the change it's (!a && b), which is not the same.

Yes, that's why I mentioned it :-)

> I guess this was just a slip. But isn't it better to do argument checks
> (aka asserts) right at the beginning of a function? I guess it doesn't
> make much sense if $parentUid and $updateToUid are not integers.

Make sense when writing new code, but leads to difficulty while making a 
cleanup... So you should just do it the way you prefer...

- michael
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