[Pharo-users] Re: roman numbers

[Richard O'Keefe]

Roman numerals are much more complicated and much less consistent
than most people realise.  The regular M DC LX VI system is both
more modern and less capable than anything the Romans would have
recognised.  In particular,
 - in the 8th century, N (short for "nulla") was adopted for zero
 - the Roman system always had fractions like S for 1/2, . for 1/12
 - there were numerals for much larger numbers.
Unicode code block [2150] has characters for the Roman numerals
including
216C L ROMAN NUMERAL FIFTY
216D C ROMAN NUMERAL ONE HUNDRED
216E D ROMAN NUMERAL FIVE HUNDRED
216F M ROMAN NUMERAL ONE THOUSAND
2181 ↁ ROMAN NUMERAL FIVE THOUSAND
2182 ↂ ROMAN NUMERAL TEN THOUSAND
2187 ↇ ROMAN NUMERAL FIFTY THOUSAND
2188 ↈ ROMAN NUMERAL ONE HUNDRED THOUSAND
(In fact these are ligated versions of forms using "apostrophic" brackets;
the pattern goes as high as you want, e.g., (((|))) for a million.
D and M were originally |) and (|).   There is

So the first thing is to make sure that you understand the
requirements for the problem.
- Are you required to produce ASCII characters, required to
  produce Unicode ones, or allowed to produce either?
- Are you required to support zero?
- Are you required to support n/12 fractions (1<=n<=11)?
- Are you allowed, required, or forbidden to use the "overline"
  convention, where an overline means "multiply by 1000"?
  =---
  ICCXXXIVDLXVII = 1,234,567
- Are you allowed, required, or forbidden to use "additive"
  form "" as well as/instead of "subtractive" form "IV"?
- Are you to use upper case or lower case letters?
- And so on.

I am not happy with the way that (0 printStringRoman) quietly
produces ''.

Assuming you're generating regular modern Roman numbers,
you pretty much have to think of an integer as having 4 parts:
n // 1000  -- this many copies of M
n // 100 \\ 10 -- hundreds using M, D, C
n // 10 \\ 100 -- tens using C, L, X
n \\ 10-- units usingX, V, I

If Squeak/Pharo's (0 printStringRoman) would answer 'N'
instead of '' I'd be happier with it.

While you really want to write your own code --- this
being an exercism task --- it would be a very good idea
to start by using #printStringRoman so that you know
what it's like to pass the tests.



On Fri, 18 Sep 2020 at 04:58, Roelof Wobben via Pharo-users <
pharo-users@lists.pharo.org> wrote:

> Hello,
>
> The challenge is to do it manually.
> But I can take a look how that function is implented.
>
> Roelof
>
>
>
> Op 17-9-2020 om 18:13 schreef Aliaksei Syrel:
>
> Hi Roelof,
>
> You will not believe!
>
> 2 printStringRoman “II”
> Have fun!
>
> On Thu, 17 Sep 2020 at 18:20, Roelof Wobben via Pharo-users <
> pharo-users@lists.pharo.org> wrote:
>
>> Hello,
>>
>>
>>
>> Can someone help me with a good plan to convert numbers to roman numbers.
>>
>>
>>
>> I could make a dictionary with 1,4,5,9,10,99,100, 999, 1000 but that
>>
>> feels like a overkill.
>>
>>
>>
>> Regards,
>>
>>
>>
>> Roelof
>>
>> --
> Cheers,
> Alex
>
>
>

[Pharo-users] [ANN] Hyperspace v2.1.0 [v2.1.0] released!

[Buenos Aires Smalltalk]

Hyperspace, a couple of facilities on top of Zinc HTTP Components reached it's v2.1.0 version.
Non breaking changes

Added TestAsserter>>#assertUrl:equals: 
Added PortAvailabilityChecker It can be used to check if a port is available or already in use, a common situation for tests failing due to port conflicts.

Regards,
The Buenos Aires Smalltalk team

[Pharo-users] Re: [Pharo-dev] Updating lists.pharo.org: New server, Mailman3 and more

[Stéphane Ducasse]

> Yes, I had a complaint/question that I need to check, I have set it to 
> private for now.

Well. may be people not in the mood to get in forums should have a dedicated 
email.
I do not get it since our mailing-lists are already publicly browsable on 
planet Smalltalk. Or I’m wrong. 

S. 


> 
>   Marcus
> 
>> On 15 Sep 2020, at 20:56, Stéphane Ducasse > > wrote:
>> 
>> marcus I tried and I could not see the archive. 
>> Apparently the archive is still private.
>> 
>>> On 14 Sep 2020, at 19:54, Marcus Denker >> > wrote:
>>> 
>>> Migration is Complete!
>>> 
>>> If you want to login at the website, you need to create a new account with 
>>> the email address that the lists are now sending emails to.
>>> 
>>> https://lists.pharo.org 
>>> 
>>> 
>>> 
 On 14 Sep 2020, at 19:18, Marcus Denker >>> > wrote:
 
 So: sending emails should now be ok, but the web-interface is still 
 syncing the archives (pharo-dev is there, pharo-users
 will be soon).
 
 But this means that everyone should be fine to send mails again.
 
Marcus
 
> On 14 Sep 2020, at 19:11, Marcus Denker  > wrote:
> 
> Testing if this is send via the new server… the new Archive is at 
> https://lists.pharo.org/empathy/list/pharo-dev.lists.pharo.org 
> 
> 
>   Marcus
> 
>> On 14 Sep 2020, at 17:42, Marcus Denker > > wrote:
>> 
>> Hi,
>> 
>> We are updating the mailinglists (everything https://lists.pharo.org/ 
>> )
>> 
>>  -> New server, thus: new IP… 
>>  -> the server will run Mailman3 (we used Mailman2)
>>  -> There will be a better Archive
>> 
>> 
>> I will do the change of the IP address today. 
>> 
>> The only thing that could happen is that mails send still via the old 
>> server will not be in the
>> new archive, everything else should be transparent.
>> 
>> I will send another mail when it is done.
>> 
>>  Marcus
> 
 
>>> 
>> 
>> 
>> Stéphane Ducasse
>> http://stephane.ducasse.free.fr  / 
>> http://www.pharo.org  
>> 03 59 35 87 52
>> Assistant: Aurore Dalle 
>> FAX 03 59 57 78 50
>> TEL 03 59 35 86 16
>> S. Ducasse - Inria
>> 40, avenue Halley, 
>> Parc Scientifique de la Haute Borne, Bât.A, Park Plaza
>> Villeneuve d'Ascq 59650
>> France
>> 
> 


Stéphane Ducasse
http://stephane.ducasse.free.fr / http://www.pharo.org 
03 59 35 87 52
Assistant: Aurore Dalle 
FAX 03 59 57 78 50
TEL 03 59 35 86 16
S. Ducasse - Inria
40, avenue Halley, 
Parc Scientifique de la Haute Borne, Bât.A, Park Plaza
Villeneuve d'Ascq 59650
France

[Pharo-users] Re: ported and refreshed Crypto-Nacl to GitHub (from StH)

[Stéphane Ducasse]

> On 17 Sep 2020, at 13:01, Jonathan van Alteren  
> wrote:
> 
> Hi Torsten and anyone interested,
> 
> I know this project probably isn't critical for you, but for me it represents 
> a nice opportunity to work on something visible in the broader community. 
> With the limited time I currently have available, that is.

Thanks for this jonathan. I appreciate it. 
> 
> I would love to hear your feedback on my comments.
> 
> Cheers!
> 
> Jonathan van Alteren
> 
> Founding Member | Object Guild B.V.
> Sustainable Software for Purpose-Driven Organizations
> 
> jvalte...@objectguild.com
> On 8 Sep 2020, 17:10 +0200, Jonathan van Alteren , 
> wrote:
> Hi Torsten,
> 
> Thanks for your message, those are some good questions/comments.
>  1. Looking at the frequency of the last commits on SmalltalkHub, I think I 
> can step in as maintainer for the moment. Please let me know if you think 
> something needs to be changed/added to the README to reflect that.
>  2. Although I am fine with making it more accessible to the community, I 
> think it should not be integrated in the Cryptography repository. If I am 
> correct, the Cryptography packages are a standalone, native implementation of 
> ASN1 and several cryptography related libraries. Crypto-Nacl is a wrapper for 
> Libsodium which uses uFFI, and will therefore only support features that 
> Sodium offers.
> 
> What are criteria for a repository to be placed under the pharo-contributions 
> organization?
>  3. Thanks, I've updated the LICENSE file to add Tony and Hernán.
>  4. I changed the name earlier, but decided to revert to the original name in 
> SmalltalkHub. If a name change is warranted, I think it should be 
> libsodium-pharo, since the original NaCl library has been superseded by 
> Sodium and other libsodium bindings follow a similar naming convention (see 
> https://github.com/search?q=libsodium=Repositories 
> )
>  5. Of course it would. At the moment, I only migrated the project from 
> SmalltalkHub, refreshed a small bit of code and enabled smalltalkCI with 
> GitHub Actions. Currently, you'd need to look at the tests for some examples.
> 
> Any particular examples you would be interested in? Perhaps you can open an 
> issue with a request.
>  6. It might already work on Windows, since the Nacl FFILibrary defines 
> 'libsodium.dll' as win32 module (library) name. However, I don't currently 
> run any Windows systems, so that would be a good opportunity for a 
> contribution. Is that something you can help with?
> 
> Thanks again for the feedback. I'm interested to work on this to gain more 
> experience with maintaining an open source project, especially since this one 
> doesn't seem very demanding at the moment. 
> 
> Are you familiar with Pieter Hintjens work and ideas on OS software? I find 
> his C4 model (Collective Code Construction Contract 
> ) to be very interesting and I'm open to 
> trying that out.
> 
> See here for more context: 
> https://hintjens.gitbooks.io/social-architecture/content/chapter4.html 
> 
> (The rest of the book is interesting as well.)
> 
> 
> Kind regards,
> 
> Jonathan van Alteren
> 
> Founding Member | Object Guild B.V.
> Sustainable Software for Purpose-Driven Organizations
> 
> jvalte...@objectguild.com
> On 31 Aug 2020, 17:37 +0200, Torsten Bergmann , wrote:
> Hi Jonathan,
>  
> nice, thanks for investing time and effort into this. Such utilities are 
> needed for serious applications. Some thoughts and questions:
> 
>  1. What is the mid-term or long-term plan regarding collaboration? Will you 
> be able to step in as maintainer?
> 
>  2. As it already seems to be authored by several people and contains 
> functionality of general interest it should be considered to move it to 
>  a central community place like 
> https://github.com/pharo-contributions[https://github.com/pharo-contributions/Cryptography]/
>  where several people from community have already
>  access. It would then be in alignment with 
> https://github.com/pharo-contributions/Cryptography[https://github.com/pharo-contributions/Cryptography]
>  too and maintenance of
> contributions as well as releases could be done from different sides and more 
> centrally.
>  
>  You and anyone can then regulary fork from the community repo to an own 
> (customized) repo like https://github.com/objectguild/Crypto-Nacl
> 
>  I guess Esteban can add you as contributor to "pharo-contribution" 
> organization if you follow that path.
> 
>  3. I guess LICENSE file need to be updated to give additionall credit to the 
> original authors or mention more general "Pharo community" 
>  (currently it mentions Object Guild solely)
>  
>  4. Can it be changed to use "NaCl" instead of "Nacl" which is more suitable 
> name for Sodium  (a similar name fixing was done in the Cuis port too)
> 
>  5. 

[Pharo-users] Re: roman numbers

[Roelof Wobben via Pharo-users]

  
  
Hello, 
  
  The challenge is to do it manually.
  But I can take a look how that function is implented.
  
  Roelof
  
  
  
  Op 17-9-2020 om 18:13 schreef Aliaksei Syrel:


  
  Hi Roelof,
  
  
  You will not believe!
  
  
  2 printStringRoman “II”
  

  Have fun!
  

  On Thu, 17 Sep 2020 at
18:20, Roelof Wobben via Pharo-users 
wrote:
  
  Hello,



Can someone help me with a good plan to convert numbers to
roman numbers.



I could make a dictionary with 1,4,5,9,10,99,100, 999, 1000
but that 

feels like a overkill.



Regards,



Roelof

  

  
  -- 
  

  

  
Cheers,
  Alex

  

  

  


  

[Pharo-users] Re: roman numbers

[Aliaksei Syrel]

Hi Roelof,

You will not believe!

2 printStringRoman “II”

Have fun!

On Thu, 17 Sep 2020 at 18:20, Roelof Wobben via Pharo-users <
pharo-users@lists.pharo.org> wrote:

> Hello,
>
>
>
> Can someone help me with a good plan to convert numbers to roman numbers.
>
>
>
> I could make a dictionary with 1,4,5,9,10,99,100, 999, 1000 but that
>
> feels like a overkill.
>
>
>
> Regards,
>
>
>
> Roelof
>
> --
Cheers,
Alex

[Pharo-users] roman numbers

[Roelof Wobben via Pharo-users]

Hello,

Can someone help me with a good plan to convert numbers to roman numbers.

I could make a dictionary with 1,4,5,9,10,99,100, 999, 1000 but that 
feels like a overkill.


Regards,

Roelof

[Pharo-users] Re: ported and refreshed Crypto-Nacl to GitHub (from StH)

[Jonathan van Alteren]

Hi Torsten and anyone interested,

I know this project probably isn't critical for you, but for me it represents a 
nice opportunity to work on something visible in the broader community. With 
the limited time I currently have available, that is.

I would love to hear your feedback on my comments.

Cheers!

Jonathan van Alteren

Founding Member | Object Guild B.V.
Sustainable Software for Purpose-Driven Organizations

jvalte...@objectguild.com
On 8 Sep 2020, 17:10 +0200, Jonathan van Alteren , 
wrote:
> Hi Torsten,
>
> Thanks for your message, those are some good questions/comments.
>  1. Looking at the frequency of the last commits on SmalltalkHub, I think I 
> can step in as maintainer for the moment. Please let me know if you think 
> something needs to be changed/added to the README to reflect that.
>  2. Although I am fine with making it more accessible to the community, I 
> think it should not be integrated in the Cryptography repository. If I am 
> correct, the Cryptography packages are a standalone, native implementation of 
> ASN1 and several cryptography related libraries. Crypto-Nacl is a wrapper for 
> Libsodium which uses uFFI, and will therefore only support features that 
> Sodium offers.
>
> What are criteria for a repository to be placed under the pharo-contributions 
> organization?
>  3. Thanks, I've updated the LICENSE file to add Tony and Hernán.
>  4. I changed the name earlier, but decided to revert to the original name in 
> SmalltalkHub. If a name change is warranted, I think it should be 
> libsodium-pharo, since the original NaCl library has been superseded by 
> Sodium and other libsodium bindings follow a similar naming convention (see 
> https://github.com/search?q=libsodium=Repositories)
>  5. Of course it would. At the moment, I only migrated the project from 
> SmalltalkHub, refreshed a small bit of code and enabled smalltalkCI with 
> GitHub Actions. Currently, you'd need to look at the tests for some examples.
>
> Any particular examples you would be interested in? Perhaps you can open an 
> issue with a request.
>  6. It might already work on Windows, since the Nacl FFILibrary defines 
> 'libsodium.dll' as win32 module (library) name. However, I don't currently 
> run any Windows systems, so that would be a good opportunity for a 
> contribution. Is that something you can help with?
>
> Thanks again for the feedback. I'm interested to work on this to gain more 
> experience with maintaining an open source project, especially since this one 
> doesn't seem very demanding at the moment.
>
> Are you familiar with Pieter Hintjens work and ideas on OS software? I find 
> his C4 model (Collective Code Construction Contract) to be very interesting 
> and I'm open to trying that out.
>
> See here for more context: 
> https://hintjens.gitbooks.io/social-architecture/content/chapter4.html
> (The rest of the book is interesting as well.)
>
>
> Kind regards,
>
> Jonathan van Alteren
>
> Founding Member | Object Guild B.V.
> Sustainable Software for Purpose-Driven Organizations
>
> jvalte...@objectguild.com
> On 31 Aug 2020, 17:37 +0200, Torsten Bergmann , wrote:
> > Hi Jonathan,
> >
> > nice, thanks for investing time and effort into this. Such utilities are 
> > needed for serious applications. Some thoughts and questions:
> >
> >  1. What is the mid-term or long-term plan regarding collaboration? Will 
> > you be able to step in as maintainer?
> >
> >  2. As it already seems to be authored by several people and contains 
> > functionality of general interest it should be considered to move it to
> >      a central community place like 
> > https://github.com/pharo-contributions[https://github.com/pharo-contributions/Cryptography]/
> >  where several people from community have already
> >      access. It would then be in alignment with 
> > https://github.com/pharo-contributions/Cryptography[https://github.com/pharo-contributions/Cryptography]
> >  too and maintenance of
> > contributions as well as releases could be done from different sides and 
> > more centrally.
> >
> >      You and anyone can then regulary fork from the community repo to an 
> > own (customized) repo like https://github.com/objectguild/Crypto-Nacl
> >
> >      I guess Esteban can add you as contributor to "pharo-contribution" 
> > organization if you follow that path.
> >
> >  3. I guess LICENSE file need to be updated to give additionall credit to 
> > the original authors or mention more general "Pharo community"
> >      (currently it mentions Object Guild solely)
> >
> >  4. Can it be changed to use "NaCl" instead of "Nacl" which is more 
> > suitable name for Sodium  (a similar name fixing was done in the Cuis port 
> > too)
> >
> >  5. Would it be possible to add some expressions/samples or docu in the 
> > README for end users on how to use it. This would give people a quick guide
> > on how to do things.
> >
> >  6. Any plans for making it work on Windows too?
> >
> > Thanks
> > Torsten
> >
> >
> >