c++ Programming Glossary: sentinel

Why does a push_back on an std::list change a reverse iterator initialized with rbegin?

http://stackoverflow.com/questions/10085570/why-does-a-push-back-on-an-stdlist-change-a-reverse-iterator-initialized-with

that it stays at the end if that is a fixed value like a sentinel node . Technical details The value returned by rend cannot point..

How to reliably get size of C-style array?

http://stackoverflow.com/questions/2404567/how-to-reliably-get-size-of-c-style-array

work if you pass the array around. So do I have to use a sentinel instead I don't think the users of my foo function can always.. users of my foo function can always be trusted to put a sentinel at the end. Of course I could use std vector but then I don't.. need to pass in the size as another parameter or use a sentinel whichever is most appropriate for your design. Some other options..

Why is address zero used for null pointer?

http://stackoverflow.com/questions/2759845/why-is-address-zero-used-for-null-pointer

and zero was chosen. I'm honestly not sure if other sentinel values were considered. The only requirements for a null pointer..

Flags to enable thorough and verbose g++ warnings

http://stackoverflow.com/questions/5088460/flags-to-enable-thorough-and-verbose-g-warnings

decls Wshadow Wsign conversion Wsign promo Wstrict null sentinel Wstrict overflow 5 Wswitch default Wundef Werror Wno unused..

End iterator invalidation rules

http://stackoverflow.com/questions/6440392/end-iterator-invalidation-rules

I suppose this is to allow end iterators pointing to sentinel values within the container. For example a typical doubly linked..

Calculating size of an array

http://stackoverflow.com/questions/720077/calculating-size-of-an-array

function is to actually work out the array size . pass a sentinel value marking the end of the data e.g. 1 2 3 4 1 . share improve..

How to cin to a vector

http://stackoverflow.com/questions/8377660/how-to-cin-to-a-vector

to input a non integer value. The alternative is to use a sentinel value though this prevents you from actually inputting that..

Why are standard iterator ranges [begin, end) instead of [begin, end]?

http://stackoverflow.com/questions/9963401/why-are-standard-iterator-ranges-begin-end-instead-of-begin-end

would require the existence of a one before the beginning sentinel value. You still need to justify why you start counting at zero..