KDAB at C++ Russia, Saint Petersburg Oct 31 - Nov 1
16.10.2019
C++ Russia
is the premier C++ conference in East Europe which alternates between Moscow and Saint Petersburg. The conference lasts for two days starting October 31st. It will be held in the Park Inn by Radisson Pulkovskaya Hotel in the heart of Saint Petersburg.
This year, the speaker line-up is quite impressive and includes names like Sean Parent, Eric Niebler, Hana Dusíková, Marshall Clow and Bryce Adelstein Lelbach.
KDAB’s Ivan Čukić will be giving the closing keynote on Friday, November 1st:
Compile-time type tagging
Many types in the standard library have additional meta-data defined in them. For example, all container types have a value_type defined which tells us the type of the items that are stored in the collection. Iterators have tags that tell us to which kind the iterator belongs to.
The problem is that this meta-information is mostly hard-coded. Sometimes this is not enough. For example, when we work with expression templates and other similar template-heavy techniques, it is useful to be able to calculate the meta-information bit by bit while the meta-program is being executed.
Since everything in a TMP program is immutable, we’ll need to use tricks to simulate mutability and step-by-step generation of the type meta-data. In this talk, we will use and explain many new C++ features like fold expressions, concepts, type lists and index sequences, and the code will extensively use move semantics to generate a cleaner assembly code for type instantiation.