October 2018 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Squeak: Compiler evaluate: '3+4' Pharo equivalent = ?

by Sven Van Caekenberghe

I believe the idea is to ask yourself for your compiler self class compiler evaluate: '1+2' So I guess, globally the following would do Smalltalk compiler evaluate: '1+2'. This I infer by looking at the implementors of #compiler > On 6 Oct 2018, at 18:30, H. Hirzel <hannes.hirzel(a)gmail.com> wrote: > > Hello > > What is the Pharo equivalent of the Squeak expression > > Compiler evaluate: '3+4' > > ? > > Thank you for the answer in advance > > --Hannes >

Oct. 6, 2018

Squeak: Compiler evaluate: '3+4' Pharo equivalent = ?

by H. Hirzel

Hello What is the Pharo equivalent of the Squeak expression Compiler evaluate: '3+4' ? Thank you for the answer in advance --Hannes

Oct. 6, 2018

Re: [Pharo-users] OpenAPI

by Norbert Hartl

We have services described there and I have code which is not yet released. Please contact me if you have questions. Norbert > Am 03.10.2018 um 16:02 schrieb hamdi gabsi <gabsi.hamdi(a)gmail.com>: > > Hi all, > I just started with OpenAPI, I'am looking for some tutoriels, documents or exemples that can help me to understand this standard. > I am wondering if there is a catalog of services that are described with OpenAPI? > > Thanks for helping. > Hamdi >

Oct. 6, 2018

Re: [Pharo-users] Zinc-AWS - problem writing bucket, ZnAWSS3RequestSignatureTool old or how to change authorization mechanism

by Tim Mackinnon

There is also the library https://github.com/newapplesho/aws-sdk-smalltalk/blob/master/README.md Which I successfully used to read and write last year (I didnât realise zinc had support). Maybe you can port the relevant bit or use it ? Tim Sent from my iPhone > On 5 Oct 2018, at 22:10, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > > >> On 5 Oct 2018, at 10:52, Sabine Manaa <manaa.sabine(a)gmail.com> wrote: >> >> I try to save data in amazon s3 by using Svens package 'Zinc-AWS'. >> I created a bucket in s3 and can read it from pharo. >> >> But when I want to save data from pharo the requests response is >> >> <?xml version="1.0" encoding="UTF-8"?> >> <Error><Code>InvalidRequest</Code><Message>The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.</Message><RequestId>....</RequestId><HostId>....</HostId></Error> >> >> I see that ZnAWSS3RequestSignatureTool uses (HMAC on: SHA1 new). >> >> Here I have problems to go further and do not know if/how I have to change the authorization mechanism. >> Or is the ZnAWSS3RequestSignatureTool old? > > Yes > >> Anyone having a hint or working code snippet for me? >> Sven could you perhaps have a look? > > The code has to be updated, but I do not have time for that. > It would be nice if somebody else could have a look. > > Sven

Oct. 5, 2018

Re: [Pharo-users] Loading and saving Matlab .mat files

by Casimiro de Almeida Barreto

Ok, Just found MatFileReader developed by Nicolas Cellier. Featured in his blog Smalissimo. Thanks Nicolas. Best regards, Casimiro On 10/03/2018 04:27 PM, Casimiro de Almeida Barreto wrote: > Good evening all, > > Is there any class dealing with Matlab files??? I'm porting a python > simulation program that reads and writes from/to .mat files (using > scipy loadmat and savemat) and such class would be extremely interesting. > > Best regards, > > > Casimiro Barreto > > > PS: didn't post success case because I'm awaiting clearance > (authorization) to do so. Private projects suck... but pay the bills :D > >

Oct. 5, 2018

Re: [Pharo-users] [Jupytertalk] Where do I put the Pharo files? Permission issue.

by Jesus Mari Aguirre

I've never tested it in Pharo 7, anyway if I am not wrong, Jupytertalk doesn't save any file. Be sure it is not a problem about Pharo 7 permissions. El vie., 5 oct. 2018 11:49, H. Hirzel <hannes.hirzel(a)gmail.com> escribiÃ³: > Hello Jesus Mari > > I am doing a new installation of JupyterTalk in a Pharo7 environment > > > curl get.pharo.org/64/70+vm | bash > > Then installation of Jupytertalk. > > I get a permission error. Even if I give very liberal permissions it > does not work. > > How are the permissions set in your installation? > > Regards > Hannes >

Oct. 5, 2018

Re: [Pharo-users] [vwnc] Parsing in Smalltalk

by Jan KurÅ¡

#memoized is one of the most efficient and hardest optimizations. It cannot be done efficiently in an automated way. It depends on input. Best way is to identify repeated invocation of the same parser combinator at the same position for a typical input, pp2 has a tooling support for this, I wrote a chapter about #memoized in PP2 [1]. PP2 does the poor-man version of memoization (based on grammar analysis) automatically, just by calling #optimize. If really needed, provide me with parser and input, I can check and suggest optimizations. There should be no fundamental issue with porting PP2 to VW. As far as I know, there is an automated tool to do so, right? On the other hand, PP is stable and does not change, PP2 is maintained and updated from time to time (mostly adding optimizations), so there might be an overhead of syncing PP2 to VW2. Cheers, Jan [1]: https://kursjan.github.io/petitparser2/pillar-book/build/Chapters/memoizati… On Fri, Oct 5, 2018, 13:26 Steffen MÃ¤rcker <merkste(a)web.de> wrote: > Hi Doru! > > > I assume that you tried the original PetitParser. PetitParser2 offers > > the possibility to optimize the parser (kind of a compilation), and > this > > provides a significant speedup: > > https://github.com/kursjan/petitparser2 > > > > Would you be interested in trying this out? > > Yes, I'd like to give this a shot, too. However, as far as I know, PP2 is > only available for Pharo and not VW, is it? > > Speaking of optimizations, I also tried to use memoizing the petit > parser. > However, the times got worse instead of better. Is there a rule of thumb > where to apply #memoized in a sensible way? As far as I understand, > applying it to the root parser does not memoize subsequent parsers, does > it? > > Kind regards, Steffen > >

Oct. 5, 2018

Re: [Pharo-users] [vwnc] Parsing in Smalltalk

by Steffen MÃ¤rcker

Hi Doru! > I assume that you tried the original PetitParser. PetitParser2 offers > the possibility to optimize the parser (kind of a compilation), and this > provides a significant speedup: > https://github.com/kursjan/petitparser2 > > Would you be interested in trying this out? Yes, I'd like to give this a shot, too. However, as far as I know, PP2 is only available for Pharo and not VW, is it? Speaking of optimizations, I also tried to use memoizing the petit parser. However, the times got worse instead of better. Is there a rule of thumb where to apply #memoized in a sensible way? As far as I understand, applying it to the root parser does not memoize subsequent parsers, does it? Kind regards, Steffen

Oct. 5, 2018

Re: [Pharo-users] [vwnc] Parsing in Smalltalk

by Steffen MÃ¤rcker

Hi Ben! > Thanks for your report Steffen. Nice to see such comparisons even when a > bit apples & oranges. > Will you be implementing those "additional verification and normalization > steps" ? > It seems they have an exponential or power impact on times. I certainly will. Meanwhile, I have some more precise numbers. As it turns out, it is indeed the additional steps (nobuild) that causes the impact. I also added the (nobuild) times from another tool, the probabilistic model checker Storm. input Prism Storm XP PP size parse nobuild nobuild parse parse 230kB 0.1s 10s 6s 9s 2s 544kB 0.2s 90s 20s 20s 5s 1.1MB 0.4s 392s 46s 34s 8s 1.4MB 0.8s 1091s 85s 47s 12s 2.2MB 63s 16s 2.9MB 81s 20s 3.8MB 107s 25s 4.4MB 123s 30s Best, Steffen

Oct. 5, 2018

[Jupytertalk] Where do I put the Pharo files? Permission issue.

by H. Hirzel

Hello Jesus Mari I am doing a new installation of JupyterTalk in a Pharo7 environment curl get.pharo.org/64/70+vm | bash Then installation of Jupytertalk. I get a permission error. Even if I give very liberal permissions it does not work. How are the permissions set in your installation? Regards Hannes

Oct. 5, 2018