Sure but unless you exclusively use the new syntax (which should be slightly faster to parse, though I'm not sure what % of total compilation time that constitu

Sure but unless you exclusively use the new syntax (which should be slightly faster to parse, though I'm not sure what % of total compilation time that constitutes) it's still going to have to do at least the same amount of work, if not more (given there's now more that has to be inferred by the compiler, rather than specified explicitly). But from experience the main issue with c++ compliation time is when modifying header files.