On 03:44 Wed 04 Nov , Jeremy wrote:
Dot as Postfix Function Apply (https://ghc.haskell.org/trac/ghc/wiki/Records/DeclaredOverloadedRecordFields...) was originally part of ORF, but dropped to keep the scope/discussion more manageable. Now that ORF is in for GHC 8.0, I would like to re-propose dot postfix syntax.
The idea is that instead of
(title person) ++ " " ++ (firstName person) ++ " " ++ (lastName person)
we could have
person.title ++ " " ++ person.firstName ++ " " ++ person.lastName
This is a simple source-to-source translation with no changes to the type system (TDNR is an orthogonal proposal). The advantages are:
1. Code that's easier to read/write. 2. Familiar to users of almost every other programming language. 3. IDE auto-complete - an IDE can suggest functions applicable to the variable after typing .
This would be an opt-in extension.
I'm posting this to the libraries list because that's where proposals generally go, although this isn't strictly a library issue. If it should be on a different list I'll move it.
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-1. There already is (&) in Data.Function. A better idea would be to re-export it from Prelude.