iterator value_type

[Chris Forone]

hello group,

is it possible to get the size of iterated object:
"sizeof(typename iterator_traits<InputIterator>::value_type);"

and NOT using dereferencing
sizeof(*theIterator); ?

thanks & hand, chris

 

[James Kanze]

is it possible to get the size of iterated object:
"sizeof(typename iterator_traits<InputIterator>::value_type);"

and NOT using dereferencing
sizeof(*theIterator); ?

Yes, but it doesn't matter, since the argument of a sizeof
operator is never evaluated (except by the compiler, to
determine its type).

 

[Michael DOUBEZ]

Chris Forone a écrit :

is it possible to get the size of iterated object:
"sizeof(typename iterator_traits<InputIterator>::value_type);"

Looks good to me.

and NOT using dereferencing
sizeof(*theIterator); ?

IMO nothing wrong with that since the deferencing will never occur but
the iterator_traits<>::value type is fine.

 

[Chris Forone]

Chris Forone a écrit :

Looks good to me.


IMO nothing wrong with that since the deferencing will never occur but
the iterator_traits<>::value type is fine.

Ah, thanks. Its only because of the dereferencing. I forgot that
sizeof() ist compiler-related...

cheers, chris