Re: Proposal: ArgumentDo

Hi Ryan, On 7 July 2016 at 19:40, Ryan Trinkle wrote:

I'm very on the fence on this topic, but one point i haven't seen mentioned is the influence of syntax highlighting on this. My guess is that I would like this extension when I have syntax highlighting available and would dislike it when I do not.

vim and hscolour can highlight code with the new syntax just fine. I imagine that most existing syntax highlighter will be able to deal with the new syntax without needing to be updated, because they usually don't attempt to fully parse expressions: they mostly just pattern-match on tokens. - Akio

Also, I agree with Carter about the record update syntax - I find it harder to parse visually than most other parts of the language, and I expect I'd find curly brace syntax for inline 'do' harder to parse in a similar way. On the other hand, maybe I should get used to both...

On Thu, Jul 7, 2016 at 2:50 PM, Joachim Breitner wrote:

...

Hi,

Am Donnerstag, den 07.07.2016, 13:15 -0400 schrieb Carter Schonwald:

...

agreed -1, ambiguity is bad for humans, not just parsers.

perhaps most damningly,

...

f do{ x } do { y }

is just reallly really weird/confusing to me,

It is weird to me, but in no way confusing under the simple new rules, and I am actually looking forward to using that, and also to reading code with that.

In fact, everything I wanted to pass two arguments in do-notation to a function I felt at a loss. The prospect of itemizing multiple large arguments to a function by writing

someFunctionWithManyArguments do firstArgument do second Argument which may span several lines do third Argument

is actually making me happy! It feels like going from XML to YAML...

Greetings, Joachim

--

Joachim “nomeata” Breitner mail@joachim-breitner.de • https://www.joachim-breitner.de/ XMPP: nomeata@joachim-breitner.de • OpenPGP-Key: 0xF0FBF51F Debian Developer: nomeata@debian.org _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users

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