replacing the Prelude (again)
Mon, 15 Jul 2002 09:05:01 +0100
I'm fond of the idea proposed by Marcin 'Qrczak' Kowalczyk:
| May I propose an alternative way of specifying an alternative
| Instead of having a command line switch, let's say that 3 always
| Prelude.fromInteger 3 - for any *module Prelude* which is in scope!
That's a perfectly reasonable idea, but GHC can't make it the default
it's not H98. It *would* be possible to make GHC's
3 means Prelude.fromInteger 3
rather than fromInteger 3
I quite like the fact that you would then have to say=20
import MyPrelude as Prelude
thereby stressing that you are importing the Prelude stuff. But it
that *plus* -fno-implicit-prelude, I'm afraid. If there were a
favour of this I'll gladly do it (5 min job).
| anymore. What I would like is that the defualting rules refer=20
| to the classes in my version of the Prelude,=20
| not the Standard Prelude.
You can always get that (with the -fno-implicit-prelude thing) by adding
default [Int, Double]
or whatever to your source module, just after the import that gets your
new standard Prelude. Doesn't that do it? =20
It would also not be hard to arrange that the "default default"
became scoped with -fno-implicit-prelude (like fromInteger), if=20
that was useful. It's a good point; I thought that *all* the numeric
was un-coupled from the Prelude with -fno-implicit-prelude, but it isn't