Make FEValuesViews::* objects movable. #16298
Merged
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I found out the hard way (see #16297) that the
FEValuesViews::*
classes are not movable even though the move constructors and move assignment operators are marked with=default
. That's because these classes haveconst
member variables that mean that=default
equals=delete
-- not what one thinks about at first.I want to make these classes movable because then we can lazily construct them with
Lazy<T>
, see #16182. I have a patch ready for this, but it relies on #16295. The changes here can stand on their own, however.