Steffen Schuldenzucker:
Sure. GHC would prompt that.
Jasper Van der Jeugt:
Not working with ghc7. But there sure are some threads about this
kind of things. I do not know if this is a bug of 6.* or 7, either.
Luke Palmer:
Sorry, by special, I meant, for example, ["a", "b"] will be "ab" by
default, but I want it to be "a,b". So I'd like to overload for
certain types.
Stephen Tetley:
I think that are the only choices. The first is simple, but the
second saves some code writing.
After all, thanks.
On Wed, Jan 5, 2011 at 4:41 PM, Stephen Tetley
You have two choices (other people have enumerated the first while I was typing):
First choice:
Wrap your Stringlist with a newtype:
newtype StringList = StringList [String]
The downside of this your code gets "polluted" with the newtype.
Second choice:
Write special putStringList and getStringList functions. Hand-code the binary instances where you are wanting [String] to be special and call putStringList and getStringList rather than put and get.
Downside - cannot automatically derive Binary. That's if Binary can be automatically derived anyway?, the times when I need Binary I write the instances myself anyway.
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