I do a lot of work with parsers, and want to do more using Applicatives.
That said, I'm finding it a little tedious being forced to use pointless
style for a task that's well-suited to having a few names around. The
idea of an applicative do notation's been kicked around on #haskell a
few
On Fri, 2009-10-09 at 18:06 +0100, Philippa Cowderoy wrote:
This leads us to the bikeshed topic: what's the concrete syntax?
I implemented a simple Camlp4 syntax extension for Ocaml to do this. I
chose the syntax:
applicatively
let x = foo
let y = bar
in pure stuff
I quite like
Robert Atkey wrote:
On Fri, 2009-10-09 at 18:06 +0100, Philippa Cowderoy wrote:
This leads us to the bikeshed topic: what's the concrete syntax?
I implemented a simple Camlp4 syntax extension for Ocaml to do this. I
chose the syntax:
applicatively
let x = foo
let y = bar
Good trick. I just added 'ado' to my little scheme monad library. ;)
-Edward Kmett
On Fri, Oct 9, 2009 at 1:06 PM, Philippa Cowderoy fli...@flippac.orgwrote:
I do a lot of work with parsers, and want to do more using Applicatives.
That said, I'm finding it a little tedious being forced to use
The only issue I would have with such a notation is not being able to
visually tell the difference between a monadic function (say, without
a explicit type sig, which is how I write parsers), and an applicative
one.
I'd prefer something like
foo = app
blah blah
If only for some
I'd prefer idiom brackets over something do-ish for Applicatives.
Conor McBride's SHE already supports them, if you're willing to use a
custom preprocessor.
On Fri, Oct 9, 2009 at 1:45 PM, Joe Fredette jfred...@gmail.com wrote:
The only issue I would have with such a notation is not being able
I have idiom brackets in that toy library already, but the ado syntax is
fairly useful if you want to refer to several intermediate results by name.
To work with idiom brackets you need to manually write a big lambda yourself
and them apply it. If you have a lambda that takes several arguments --
Excerpts from Edward Kmett's message of Fri Oct 09 20:04:08 +0200 2009:
I have idiom brackets in that toy library already, but the ado syntax is
fairly useful if you want to refer to several intermediate results by name.
To work with idiom brackets you need to manually write a big lambda
Nicolas Pouillard wrote:
Excerpts from Edward Kmett's message of Fri Oct 09 20:04:08 +0200 2009:
I have idiom brackets in that toy library already, but the ado syntax is
fairly useful if you want to refer to several intermediate results by name.
To work with idiom brackets you need to
