Le 18/12/2011 03:01, Jonathan M Davis a écrit : > On Saturday, December 17, 2011 19:44:28 deadalnix wrote: >> Very good point. CTFE is improving with each version of dmd, and is a >> real alternative to static this(); It should be considered when >> apropriate, it has many benefices. > > I think that in general, the uses for static this fall into one of two > categories: > > 1. Initializing stuff that can't be initialized at compile time. This > includes > stuff like classes or AAs as well as stuff which needs to be initialized with > a > value which isn't known until runtime (e.g. when the program started running). > > 2. Calling functions which need to be called at the beginning of the program > (e.g. a function which does something to the environment that the program is > running in). > > As CTFE improves, #1 should become smaller and smaller, and static this > should > be needed less and less, but #2 will always remain. It _is_ however the far > rarer of the two use cases. So, ultimately static this may become very rare. > > - Jonathan M Davis
In the Java/C# world, they use dependency injection frameworks like Google Guice or picocontainer to deal with this issue. In the case of datetime, though, I suspect it would be a using a hammer to crush a fly.
