[#16611] lambda, ->, haskell, and so on — Dave Thomas <dave@...>

This is one of those e-mails that I know from the start to be futile, =20=

148 messages 2008/05/01
[#16661] Re: lambda, ->, haskell, and so on — Paul Brannan <pbrannan@...> 2008/05/05

On Thu, May 01, 2008 at 12:26:47PM +0900, Dave Thomas wrote:

[#16662] Re: lambda, ->, haskell, and so on — "David A. Black" <dblack@...> 2008/05/05

Hi --

[#16663] Re: lambda, ->, haskell, and so on — ts <decoux@...> 2008/05/05

David A. Black wrote:

[#16664] Re: lambda, ->, haskell, and so on — "David A. Black" <dblack@...> 2008/05/05

Hi --

[#16682] Re: lambda, ->, haskell, and so on — ara howard <ara.t.howard@...> 2008/05/08

[#16684] Re: lambda, ->, haskell, and so on — Michael Neumann <mneumann@...> 2008/05/08

ara howard wrote:

[#16687] Re: lambda, ->, haskell, and so on — "David A. Black" <dblack@...> 2008/05/08

Hi --

[#16691] Re: lambda, ->, haskell, and so on — "ara.t.howard" <ara.t.howard@...> 2008/05/08

[#16692] Re: lambda, ->, haskell, and so on — "David A. Black" <dblack@...> 2008/05/08

Hi --

[#16695] Re: lambda, ->, haskell, and so on — "ara.t.howard" <ara.t.howard@...> 2008/05/08

[#16705] Re: lambda, ->, haskell, and so on — Evan Phoenix <evan@...> 2008/05/11

Not to throw the whole thread into a tizzy again, but why again is:

[#16708] Re: lambda, ->, haskell, and so on — Nobuyoshi Nakada <nobu@...> 2008/05/11

Hi,

[#16720] Re: lambda, ->, haskell, and so on — Yukihiro Matsumoto <matz@...> 2008/05/11

Hi,

[#16721] Re: lambda, ->, haskell, and so on — "David A. Black" <dblack@...> 2008/05/12

Hi --

[#16722] Re: lambda, ->, haskell, and so on — Yukihiro Matsumoto <matz@...> 2008/05/12

Hi,

[#16723] Re: lambda, ->, haskell, and so on — Evan Phoenix <evan@...> 2008/05/12

[#16724] Re: lambda, ->, haskell, and so on — Yukihiro Matsumoto <matz@...> 2008/05/12

Hi,

[#16726] Re: lambda, ->, haskell, and so on — Nathan Weizenbaum <nex342@...> 2008/05/12

What about "fn" or "fun", for "function"?

[#16728] Re: lambda, ->, haskell, and so on — Yukihiro Matsumoto <matz@...> 2008/05/12

Hi,

[#16731] Re: lambda, ->, haskell, and so on — Evan Phoenix <evan@...> 2008/05/12

[#16732] Re: lambda, ->, haskell, and so on — Yukihiro Matsumoto <matz@...> 2008/05/12

Hi,

[#16759] Re: lambda, ->, haskell, and so on — "David A. Black" <dblack@...> 2008/05/13

Hi --

[#16766] Re: lambda, ->, haskell, and so on — Yukihiro Matsumoto <matz@...> 2008/05/14

Hi,

[#16784] Re: lambda, ->, haskell, and so on — "David A. Black" <dblack@...> 2008/05/18

Hi --

[#16795] Re: lambda, ->, haskell, and so on — Nate_Wiger@... 2008/05/19

On Wed, 14 May 2008, David A. Black wrote:

[#16797] Re: lambda, ->, haskell, and so on — Yukihiro Matsumoto <matz@...> 2008/05/19

Hi,

[#16798] Re: lambda, ->, haskell, and so on — "Christopher Gill" <gilltots@...> 2008/05/19

how about an uppercase lambda (instead of the usual lowercase one)

[#16802] Re: lambda, ->, haskell, and so on — "Suraj N. Kurapati" <sunaku@...> 2008/05/20

Christopher Gill wrote:

[#16843] Re: lambda, ->, haskell, and so on — "Suraj N. Kurapati" <sunaku@...> 2008/05/22

Suraj N. Kurapati wrote:

[#16846] Re: lambda, ->, haskell, and so on — "Berger, Daniel" <Daniel.Berger@...> 2008/05/22

=20

[#16854] Re: lambda, ->, haskell, and so on — "=?ISO-8859-2?Q?Rados=B3aw_Bu=B3at?=" <radek.bulat@...> 2008/05/22

T24gVGh1LCBNYXkgMjIsIDIwMDggYXQgNTozNyBQTSwgQmVyZ2VyLCBEYW5pZWwgPERhbmllbC5C

[#16857] Re: lambda, ->, haskell, and so on — "Jeremy McAnally" <jeremymcanally@...> 2008/05/23

RXZlbiB0aG91Z2ggSSBzZWUgdGhlIHVzZWZ1bG5lc3MsIHRoYXQncyBqdXN0IHVnbHkuCgotLUpl

[#16874] Re: lambda, ->, haskell, and so on — Nate_Wiger@... 2008/05/23

"Jeremy McAnally" <jeremymcanally@gmail.com> wrote on 05/22/2008 05:35:01=20

[#16875] Re: lambda, ->, haskell, and so on — "Nikolai Weibull" <now@...> 2008/05/23

2008/5/23 <Nate_Wiger@playstation.sony.com>:

[#16886] lambda with normal block syntax — "Eric Mahurin" <eric.mahurin@...>

This patch is an independent but related one to my previous one. It can be

64 messages 2008/05/25
[#16895] Re: [PATCH] lambda with normal block syntax — Nobuyoshi Nakada <nobu@...> 2008/05/26

Hi,

[#16900] Re: [PATCH] lambda with normal block syntax — "Eric Mahurin" <eric.mahurin@...> 2008/05/26

On Sun, May 25, 2008 at 8:19 PM, Nobuyoshi Nakada <nobu@ruby-lang.org>

[#16901] Re: [PATCH] lambda with normal block syntax — Yukihiro Matsumoto <matz@...> 2008/05/26

Hi,

[#16902] Re: [PATCH] lambda with normal block syntax — "Suraj N. Kurapati" <sunaku@...> 2008/05/26

Hi,

[#16903] Re: [PATCH] lambda with normal block syntax — Yukihiro Matsumoto <matz@...> 2008/05/26

Hi,

[#16904] Re: [PATCH] lambda with normal block syntax — Dave Thomas <dave@...> 2008/05/26

[#16905] Re: [PATCH] lambda with normal block syntax — Yukihiro Matsumoto <matz@...> 2008/05/26

Hi,

[#16907] Re: [PATCH] lambda with normal block syntax — Dave Thomas <dave@...> 2008/05/26

[#16912] Re: [PATCH] lambda with normal block syntax — Yukihiro Matsumoto <matz@...> 2008/05/26

Hi,

[#16920] Re: [PATCH] lambda with normal block syntax — David Flanagan <david@...> 2008/05/26

If I may, here are two entries from the ChangeLog file:

[#16922] Re: [PATCH] lambda with normal block syntax — Dave Thomas <dave@...> 2008/05/26

[#16927] Re: [PATCH] lambda with normal block syntax — David Flanagan <david@...> 2008/05/26

Dave Thomas wrote:

[#16928] Re: [PATCH] lambda with normal block syntax — Dave Thomas <dave@...> 2008/05/26

[#16929] Re: [PATCH] lambda with normal block syntax — David Flanagan <david@...> 2008/05/26

Dave Thomas wrote:

[#16931] Re: [PATCH] lambda with normal block syntax — Dave Thomas <dave@...> 2008/05/27

[#16946] Re: [PATCH] lambda with normal block syntax — David Flanagan <david@...> 2008/05/27

Dave Thomas wrote:

[#16947] Re: [PATCH] lambda with normal block syntax — James Gray <james@...> 2008/05/27

On May 27, 2008, at 12:33 PM, David Flanagan wrote:

[#16949] Re: [PATCH] lambda with normal block syntax — David Flanagan <david@...> 2008/05/27

James Gray wrote:

Re: lambda, ->, haskell, and so on

From: "David A. Black" <dblack@...>
Date: 2008-05-08 15:35:35 UTC
List: ruby-core #16687
Hi --

On Thu, 8 May 2008, Michael Neumann wrote:

> ara howard wrote:
>> 
>> On Apr 30, 2008, at 9:26 PM, Dave Thomas wrote:
>>> This is one of those e-mails that I know from the start to be futile, 
>>> but...
>>> 
>>> For a while now, the
>>>
>>>     -> (params) { block }
>>> 
>>> syntax in Ruby 1.9 has bothered me, but I've never been sure why. Today, 
>>> while playing with pure, it struck me. The '->' sequence is in an 
>>> unexpected place. Having played with some functional languages, I'm used 
>>> to lambdas being written
>>>
>>>  \ params -> block
>> 
>> i like the '->' because it suggests very nice multi-block syntax
>> 
>> filter(
>>
>>   :before -> { buf.upcase },
>>
>>   :after -> { bug.downcase }
>> 
>> )
>
> Note that this already works in ruby19:
>
>  filter before: -> { buf.upcase }, after: -> { buf.downcase}

The arrow really looks weird there, since it's not pointing to
anything but looks all the more like it is (since there's something on
the left). I can imagine people will wonder why:

   one: -> "string"

doesn't mean that "string" goes with one:.... I don't mind people
having to learn stuff, but this just seems like asking for trouble.


David

-- 
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