Identity# is my favorite of all those I've seen suggested thus far. On Wed, Jan 17, 2018 at 5:27 PM, M Farkas-Dyck wrote:

Identity# _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

I've seen Only in the wild, and it's probably my favorite of the initial suggestions for the same reasons as Ryan. Mono is my second pick from that list. Id is very clean, but I could see pedagogical issues arising from name confusion. Sing(le(ton)) is a terrible idea for the same reason. Venturing my own paint swatch: Solo fits in nicely with the established size-specific names (pair, triple, etc.) and has all the good traits: short, self-explanatory, nothing with a confusingly similar name (that I know of). On Jan 17, 2018 4:35 PM, "Ryan Reich" wrote: Only has two virtues I can see easily: it's short (shorter than almost all the others), and it has the same feel as Maybe. There is also Id, the name of the mathematical function that this type (and corresponding data) constructor is. Less pithy but even less intrusive. On Jan 17, 2018 15:47, "Andrew Martin" wrote: Required background information: https://ghc.haske ll.org/trac/ghc/ticket/14673 GHC has a one-tuple (both a boxed variant and an unboxed variant). The unboxed variant currently must be fully applied whenever it is used. This is in stark contrast to all the other n-tuples (n > 1). It stems entirely from an issue of syntax. The solution decided on is to provide a normal prefix name for the 1-tuple. The name that GHC uses internally for this type is `Unit#` (there is also a boxed variant Unit). However, in the haskell community, the word "unit" already refers to the nullary tuple, not the unary tuple. So, we're bikeshedding the name. Here are some possible options: * Unary (as in unary tuple) * Single (as in single, double, triple) * Singleton (as is singleton, doubleton, tripleton) * Only (https://hackage.haskell.org/package/Only-0.1/docs/Data-Tupl e-Only.html) * OneTuple (https://hackage.haskell.org/package/OneTuple-0.2.1/docs/Dat a-Tuple-OneTuple.html) * Uni (means "one" in latin or greek or something like that) * Mono (means "one" in latin or greek or something like that) I would appreciate any feedback on the suggestions I provided or any additional suggestions for the name. If you have concerns about the feature itself, comment on the GHC Trac ticket. I'd prefer to keep this thread focused on just the problem of coming up with a name. -- -Andrew Thaddeus Martin _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

I deem this feature outside of the mainstream, so it should not occupy a short nice name. I suggest UnaryTuple. On 18.01.2018 09:22, Simon Peyton Jones via Libraries wrote:

I quite like Solo.

Simon

*From:*Libraries [mailto:libraries-bounces@haskell.org] *On Behalf Of *Theodore Lief Gannon *Sent:* 18 January 2018 02:42 *To:* Ryan Reich *Cc:* Haskell Libraries *Subject:* Re: Name of 1-Tuple Data Type

I've seen Only in the wild, and it's probably my favorite of the initial suggestions for the same reasons as Ryan. Mono is my second pick from that list.

Id is very clean, but I could see pedagogical issues arising from name confusion. Sing(le(ton)) is a terrible idea for the same reason.

Venturing my own paint swatch: Solo fits in nicely with the established size-specific names (pair, triple, etc.) and has all the good traits: short, self-explanatory, nothing with a confusingly similar name (that I know of).

On Jan 17, 2018 4:35 PM, "Ryan Reich" mailto:ryan.reich@gmail.com> wrote:

Only has two virtues I can see easily: it's short (shorter than almost all the others), and it has the same feel as Maybe.

There is also Id, the name of the mathematical function that this type (and corresponding data) constructor is. Less pithy but even less intrusive.

On Jan 17, 2018 15:47, "Andrew Martin" mailto:andrew.thaddeus@gmail.com> wrote:

Required background information: https://ghc.haskell.org/trac/ghc/ticket/14673

GHC has a one-tuple (both a boxed variant and an unboxed variant). The unboxed variant currently must be fully applied whenever it is used. This is in stark contrast to all the other n-tuples (n > 1). It stems entirely from an issue of syntax. The solution decided on is to provide a normal prefix name for the 1-tuple. The name that GHC uses internally for this type is `Unit#` (there is also a boxed variant Unit). However, in the haskell community, the word "unit" already refers to the nullary tuple, not the unary tuple. So, we're bikeshedding the name.

Here are some possible options:

* Unary (as in unary tuple)

* Single (as in single, double, triple)

* Singleton (as is singleton, doubleton, tripleton)

* Only (https://hackage.haskell.org/package/Only-0.1/docs/Data-Tuple-Only.html https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhackage.haskell.org%2Fpackage%2FOnly-0.1%2Fdocs%2FData-Tuple-Only.html&data=02%7C01%7Csimonpj%40microsoft.com%7C3db602b14f26474965ff08d55e1d285f%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636518401685292292&sdata=fMbHCFU%2Br3JHwmI8a4QgHD26fhoclfklE3xA0O6tCE4%3D&reserved=0)

* OneTuple (https://hackage.haskell.org/package/OneTuple-0.2.1/docs/Data-Tuple-OneTuple.... https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhackage.haskell.org%2Fpackage%2FOneTuple-0.2.1%2Fdocs%2FData-Tuple-OneTuple.html&data=02%7C01%7Csimonpj%40microsoft.com%7C3db602b14f26474965ff08d55e1d285f%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636518401685292292&sdata=rRLW8KJoKT5IQ5Y6s3kMrUOiUGk6xa77zb5VvGuAfGw%3D&reserved=0)

* Uni (means "one" in latin or greek or something like that)

* Mono (means "one" in latin or greek or something like that)

I would appreciate any feedback on the suggestions I provided or any additional suggestions for the name. If you have concerns about the feature itself, comment on the GHC Trac ticket. I'd prefer to keep this thread focused on just the problem of coming up with a name.

--

-Andrew Thaddeus Martin

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-- Andreas Abel <>< Du bist der geliebte Mensch. Department of Computer Science and Engineering Chalmers and Gothenburg University, Sweden andreas.abel@gu.se http://www.cse.chalmers.se/~abela/

It's certainly outside of the mainstream, but it's not going to be part of the prelude. You'll need to import GHC.Prim or GHC.Exts to get a hold of it. For this reason, I'm not too worried about stealing a good name. On Thu, Jan 18, 2018 at 3:27 AM, Andreas Abel wrote:

I deem this feature outside of the mainstream, so it should not occupy a short nice name.

I suggest UnaryTuple.

On 18.01.2018 09:22, Simon Peyton Jones via Libraries wrote:

...

I quite like Solo.

Simon

*From:*Libraries [mailto:libraries-bounces@haskell.org] *On Behalf Of *Theodore Lief Gannon *Sent:* 18 January 2018 02:42 *To:* Ryan Reich *Cc:* Haskell Libraries *Subject:* Re: Name of 1-Tuple Data Type

I've seen Only in the wild, and it's probably my favorite of the initial suggestions for the same reasons as Ryan. Mono is my second pick from that list.

Id is very clean, but I could see pedagogical issues arising from name confusion. Sing(le(ton)) is a terrible idea for the same reason.

Venturing my own paint swatch: Solo fits in nicely with the established size-specific names (pair, triple, etc.) and has all the good traits: short, self-explanatory, nothing with a confusingly similar name (that I know of).

On Jan 17, 2018 4:35 PM, "Ryan Reich" > wrote:

Only has two virtues I can see easily: it's short (shorter than almost all the others), and it has the same feel as Maybe.

There is also Id, the name of the mathematical function that this type (and corresponding data) constructor is. Less pithy but even less intrusive.

On Jan 17, 2018 15:47, "Andrew Martin" mailto:andrew.thaddeus@gmail.com> wrote:

Required background information: https://ghc.haskell.org/trac/ghc/ticket/14673

GHC has a one-tuple (both a boxed variant and an unboxed variant). The unboxed variant currently must be fully applied whenever it is used. This is in stark contrast to all the other n-tuples (n > 1). It stems entirely from an issue of syntax. The solution decided on is to provide a normal prefix name for the 1-tuple. The name that GHC uses internally for this type is `Unit#` (there is also a boxed variant Unit). However, in the haskell community, the word "unit" already refers to the nullary tuple, not the unary tuple. So, we're bikeshedding the name.

Here are some possible options:

* Unary (as in unary tuple)

* Single (as in single, double, triple)

* Singleton (as is singleton, doubleton, tripleton)

* Only (https://hackage.haskell.org/package/Only-0.1/docs/Data-Tupl e-Only.html <https://na01.safelinks.protection.outlook.com/?url=https% 3A%2F%2Fhackage.haskell.org%2Fpackage%2FOnly-0.1%2Fdocs% 2FData-Tuple-Only.html&data=02%7C01%7Csimonpj%40microsoft. com%7C3db602b14f26474965ff08d55e1d285f%7C72f988bf86f141af91a b2d7cd011db47%7C1%7C0%7C636518401685292292&sdata=fMbHCFU%2Br 3JHwmI8a4QgHD26fhoclfklE3xA0O6tCE4%3D&reserved=0>)

* OneTuple (https://hackage.haskell.org/package/OneTuple-0.2.1/docs/Dat a-Tuple-OneTuple.html <https://na01.safelinks.protection.outlook.com/?url=https% 3A%2F%2Fhackage.haskell.org%2Fpackage%2FOneTuple-0.2.1% 2Fdocs%2FData-Tuple-OneTuple.html&data=02%7C01%7Csimonpj% 40microsoft.com%7C3db602b14f26474965ff08d55e1d285f%7C72f988b f86f141af91ab2d7cd011db47%7C1%7C0%7C636518401685292292& sdata=rRLW8KJoKT5IQ5Y6s3kMrUOiUGk6xa77zb5VvGuAfGw%3D&reserved=0>)

* Uni (means "one" in latin or greek or something like that)

* Mono (means "one" in latin or greek or something like that)

I would appreciate any feedback on the suggestions I provided or any additional suggestions for the name. If you have concerns about the feature itself, comment on the GHC Trac ticket. I'd prefer to keep this thread focused on just the problem of coming up with a name.

-- -Andrew Thaddeus Martin

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-- Andreas Abel <>< Du bist der geliebte Mensch.

Department of Computer Science and Engineering Chalmers and Gothenburg University, Sweden

andreas.abel@gu.se http://www.cse.chalmers.se/~abela/ _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

-- -Andrew Thaddeus Martin

Unit# seems fine to me, its not gonna be in prelude, its a short name, i dislike Only because i've only really seen it come up in in DB libraries :) On Thu, Jan 18, 2018 at 1:36 PM, Andrew Martin wrote:

I like Solo. I think it would be a very good name for this for the reasons you listed.

On Wed, Jan 17, 2018 at 9:41 PM, Theodore Lief Gannon wrote:

...

I've seen Only in the wild, and it's probably my favorite of the initial suggestions for the same reasons as Ryan. Mono is my second pick from that list.

Id is very clean, but I could see pedagogical issues arising from name confusion. Sing(le(ton)) is a terrible idea for the same reason.

Venturing my own paint swatch: Solo fits in nicely with the established size-specific names (pair, triple, etc.) and has all the good traits: short, self-explanatory, nothing with a confusingly similar name (that I know of).

On Jan 17, 2018 4:35 PM, "Ryan Reich" wrote:

Only has two virtues I can see easily: it's short (shorter than almost all the others), and it has the same feel as Maybe.

There is also Id, the name of the mathematical function that this type (and corresponding data) constructor is. Less pithy but even less intrusive.

On Jan 17, 2018 15:47, "Andrew Martin" wrote:

Required background information: https://ghc.haske ll.org/trac/ghc/ticket/14673

GHC has a one-tuple (both a boxed variant and an unboxed variant). The unboxed variant currently must be fully applied whenever it is used. This is in stark contrast to all the other n-tuples (n > 1). It stems entirely from an issue of syntax. The solution decided on is to provide a normal prefix name for the 1-tuple. The name that GHC uses internally for this type is `Unit#` (there is also a boxed variant Unit). However, in the haskell community, the word "unit" already refers to the nullary tuple, not the unary tuple. So, we're bikeshedding the name.

Here are some possible options:

* Unary (as in unary tuple) * Single (as in single, double, triple) * Singleton (as is singleton, doubleton, tripleton) * Only (https://hackage.haskell.org/package/Only-0.1/docs/Data-Tupl e-Only.html) * OneTuple (https://hackage.haskell.org/package/OneTuple-0.2.1/docs/Dat a-Tuple-OneTuple.html) * Uni (means "one" in latin or greek or something like that) * Mono (means "one" in latin or greek or something like that)

I would appreciate any feedback on the suggestions I provided or any additional suggestions for the name. If you have concerns about the feature itself, comment on the GHC Trac ticket. I'd prefer to keep this thread focused on just the problem of coming up with a name.

-- -Andrew Thaddeus Martin

_______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

_______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

-- -Andrew Thaddeus Martin

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On Thu, 18 Jan 2018, David Feuer wrote:

I imagine whatever name is chosen will have a # at the end.

... and you can disambiguate using qualification.

On 18 January 2018 at 19:25, Andreas Abel wrote:

-1.

Don't grap any of these nice names for that obscure feature. Take some ugly name.

It seems like an obscure feature, but something similar has been re-implemented by a suprising number of libraries (vector, postgresql-simple, cassava, etc.). Typically when you want to differentiate a raw value from a (possible singular) collection of values (e.g. field vs row).

On 18.01.2018 00:46, Andrew Martin wrote:

...

Required background information: https://ghc.haskell.org/trac/ghc/ticket/14673

GHC has a one-tuple (both a boxed variant and an unboxed variant). The unboxed variant currently must be fully applied whenever it is used. This is in stark contrast to all the other n-tuples (n > 1). It stems entirely from an issue of syntax. The solution decided on is to provide a normal prefix name for the 1-tuple. The name that GHC uses internally for this type is `Unit#` (there is also a boxed variant Unit). However, in the haskell community, the word "unit" already refers to the nullary tuple, not the unary tuple. So, we're bikeshedding the name.

Here are some possible options:

* Unary (as in unary tuple) * Single (as in single, double, triple) * Singleton (as is singleton, doubleton, tripleton) * Only (https://hackage.haskell.org/package/Only-0.1/docs/Data-Tuple-Only.html) * OneTuple (https://hackage.haskell.org/package/OneTuple-0.2.1/docs/Data-Tuple-OneTuple....) * Uni (means "one" in latin or greek or something like that) * Mono (means "one" in latin or greek or something like that)

I would appreciate any feedback on the suggestions I provided or any additional suggestions for the name. If you have concerns about the feature itself, comment on the GHC Trac ticket. I'd prefer to keep this thread focused on just the problem of coming up with a name.

-- Andreas Abel <>< Du bist der geliebte Mensch.

Department of Computer Science and Engineering Chalmers and Gothenburg University, Sweden

andreas.abel@gu.se http://www.cse.chalmers.se/~abela/

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