Am Freitag 18 September 2009 04:42:32 schrieb Michael Mossey:
I'm working on a GUI application in qtHaskell, and I have a bit of a bind. Using ghci, it launches quickly but runs slowly. On the other hand, compiling (mainly linking) takes a while---several minutes. The truth is
Is the library you're using built with split-objs? If not, that would explain the long link time.
that I can compile it much faster if I selectively import the needed modules, so figure the actual compilation/link time is more like 15 to 30 seconds. (This is Windows on a very old laptop.) I'm used to working in Python, so I'm used to a nearly instant code-build-test cycle, and GUI applications in PyQt run briskly, faster than ghci/qtHaskell.
Now I'm wondering if Hugs is a faster interpreter.
Usually it isn't. It's faster loading the code than ghci, but slower running it.
So during development I don't want to give up the quick cycle you get with an interpreter, but the application may be much too slow to use in any meaningful way without compilation. Any advice welcome. Maybe there is a way to speed up the interpretation.
Smaller modules, so that only the hopefully few modules that were changed or depend on a changed module need be recompiled? (Not sure that would help with linking, though)
-Mike