On Mon, Apr 28, 2008 at 02:00:38PM -0700, Donald Bruce Stewart wrote:
>
> This goes back to an old gripe of mine actually -- we can't get
> at the length of a C string literal at compile time either, which
> would be super useful in rules.
I think that this is easy to do by, instead of desugaring
"foo" -> unpackCString# "foo"#
desugaring
"foo" -> unpackCStringLen# 3# "foo"#
where
unpackCStringLen# _ = unpackCString#
It's not really feasible to do head#, tail# etc this way, though, so if
head#/tail# are done another way then it's probably best to do length#
that way too.
By the way, please do file tickets for the issues from this thread, so
that the issues and ideas don't get forgotten about!
Thanks
Ian
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