You could write something based on reflection which compares them, but it would probably have worse performance. My experience is that such comparisons are usually only desired in tests, where performance doesn't matter anyway.
On Thu, Aug 6, 2009 at 8:49 PM, 李海波 <[email protected]> wrote: > > Thanks.This is a good idea. > I have another problem.How to equal two message's object instance? > I find one way： > -------------------------------------------------------------------------- > Path path; > Element* e1 = path.add_element(); > Element* e2 = path.add_element(); > string s1,s2; > e1.SerializeToString(&s1); > e2.SerializeToString(&s2); > if( s1 == s2 ){ > //do something > } > -------------------------------------------------------------------------- > But i think it does not have good performance. > > On 8月7日, 上午2时01分, Kenton Varda <[email protected]> wrote: > > You have to make a copy instead, e.g.: > > path.add_element()->CopyFrom(ele); > > delete ele; > > > > On Thu, Aug 6, 2009 at 3:21 AM, 李海波 <[email protected]> wrote: > > > Path path; > > > Element* ele = new Element(); > > > if( condition ){ > > > delete ele; > > > }else{ > > > //add ele to path,how can I do? > > > } > > > > If your code really looks like this, you should probably change it to: > > > > Path path; > > Element* ele = path.add_element(); > > if (condition) { > > path.mutable_element()->RemoveLast(); > > } > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/protobuf?hl=en -~----------~----~----~----~------~----~------~--~---
