[#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: Array.nitems replacement?

From: "Akinori MUSHA" <knu@...>
Date: 2008-05-29 14:23:16 UTC
List: ruby-core #16993
At Thu, 29 May 2008 03:03:01 +0900,
David Flanagan wrote:
> Array.nitems has just been removed from 1.9, and as near as I can make
> out from trying to read ruby-dev, Enumerable.count is suggested as a
> replacement.

I didn't think there was a supporter for the method, since even Keiju
himself, the father of the method, said in an interview that he hated
it that he added the method of such a strange feature.

> I wonder if it is possible to make Enumerable.count a true work-alike
> replacement for nitems.
>
> Currently, if count is invoked with no argument and no block, it
> returns an Enumerator.  I'm not why this is useful and wonder if
> instead, it could return the number of non-nil elements just as nitems
> does in 1.8. That would provide a clear porting path for 1.8 code that
> uses nitems: just change nitems to count.
>
> Am I missing something?  Is there a use-case for an Enumerator
> returned by Enumerable#count?

I think not.  Actually it is not official (I know it's not fair but I
intentionally omitted it from rdoc and NEWS) that it returns an
enumerator at the moment, and it would indeed be better if it returned
something more useful and obvious from the name.

My question is if counting the number of non-nil elements can be more
useful and obvious than any other feature, such as:

1) counting the number of all elements (the same as size/length for Array)
2) counting the number of "true" elements (not nil nor false)
3) counting the number of unique elements ([1,2,3,4,2,2,1].count == 4)

What do you think?

--
Akinori MUSHA / http://akinori.org/

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