[Haskell-beginners] annoying precedence of unary negate
ky3 at atamo.com
Mon Apr 28 07:08:24 UTC 2014
On Mon, Apr 28, 2014 at 10:59 AM, John M. Dlugosz
<ngnr63q02 at sneakemail.com>wrote:
> Also, is the comma in a list different from the operator comma which is
> noted as right-associative precedence 5? I had thought that the item
> separator in the list was special syntax that had very low precedence.
The _colon_ is a non-rebindable special-syntax operator with infixr 5.
Otoh, the _comma_ in a list is _not_ an operator but merely an item
Comma-separated list notation e.g. [1,2,3] is special syntax that desugars
to e.g. 1:2:3:.
Other than that, the colon and comma don't have anything else in common.
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