Opened by Muffi at 2012-08-21 17:05
Hallo.
Zitat aus perldoc overload Abschnitt Copy Constructor:
und
M.a.W. es fehlt höchstwahrscheinlich ein Copy-Konstruktor für Class::Date (basiert auf AREFs statt Scalar?).
HTH
Zitat aus perldoc overload Abschnitt Copy Constructor:
QuoteIf 'fallback' is undefined or TRUE then a copy constructor can be autogenerated, but only for objects based on scalars. In other cases it needs to be defined explicitly. Where an object's data is stored as, for example, an array of scalars, the following might be appropriate:
use overload '=' => sub { bless [ @{$_[0]} ] }, # ...
und
QuoteIf 'fallback' is TRUE and no copy constructor is defined then, for objects not based on scalars, Perl may silently fall back on simple assignment - that is, assignment of the object reference. In effect, this disables the copy constructor mechanism since no new copy of the object data is created. This is almost certainly not what you want. (It is, however, consistent: for example, Perl's fallback for the "++" operator is to increment the reference itself.)
M.a.W. es fehlt höchstwahrscheinlich ein Copy-Konstruktor für Class::Date (basiert auf AREFs statt Scalar?).
HTH