On Saturday 16 October 2010 01:40:55 Paulo Pinto wrote: > Hi, > > while reading TDPL I start wondering what is the background between > function and delegate. > > They seem to provide more or less the same funcionality, except delegate > allows the capture > of the function declaration environment. > > Most of the programming languages with support for closures only have one > way of doing it. > > Why is D providing two ways of doing it? For me sounds like a feature > similar to register, or > inline for doing what should be the compilers work. Deciding the best > implementation for the > closure. > > Thanks, > Paulo
I believe that the two main reasons are 1. function pointers have less overhead. 2. If you want to use function pointers when calling C functions, you need function pointers rather than delegates. but there are probably others. - Jonathan M Davis
