18 May
2015
18 May
'15
6:43 a.m.
On 2015-05-18 at 02:08:04 +0200, Dan Doel wrote:
Today, someone came into #haskell and asked why they couldn't type the equivalent of:
> "hi" ++ "bye"
into GHCi with OverloadedStrings enabled.
A minor observation: had (s)he used <> instead, GHCi would have happily inferred (and somewhat surprisingly reduced to a polymorphic "foobar"): GHCi, version 7.10.1: http://www.haskell.org/ghc/ :? for help λ:2> "foo" <> "bar" "foobar" it :: (Data.String.IsString m, Monoid m) => m