Hi Kohei, On Friday, 2012-01-27 09:53:50 -0500, Kohei Yoshida wrote:
> 4) Last point. List takes ownership of the contained objects, which > means it automatically deletes those objects when destroyed. When you > use vector, that convenience is gone, so you'll need to manually delete > the contained objects. Or, in this case it's probably better to use > ptr_vector instead. Actually no, List does not take ownership of objects and does not delete upon destruction! Ownership is only with SV_DECL_PTRARR_DEL and SV_DECL_PTRARR_SORT_DEL 5) One caveat: List::Next() (and in general Next() of Container derived classes) return NULL if invoked on the last element. Care has to be taken when replacing for (p = list.First(); p; p = list.Next()) with for (it = list.begin(); it != list.end(); ++it) If p is accessed after the loop it was NULL after the last element if the loop didn't break before, but from the last valid iterator (p=*it or some such) it will be non-NULL instead, the pointer of the last element. In such cases p needs to get explicitly assigned NULL if list reached end. Eike -- LibreOffice Calc developer. Number formatter stricken i18n transpositionizer. GnuPG key 0x293C05FD : 997A 4C60 CE41 0149 0DB3 9E96 2F1A D073 293C 05FD
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