November 2016 - Pharo-users

[ann] petitparser2

by Tudor Girba

Hi, I am happy to announce the availability of PetitParser2, a wonderful redesign of the original PetitParser developed by Jan KurÅ¡. https://github.com/kursjan/petitparser2 Highlights: - it introduces the compiler facility that speeds up parsers by a factor of ~2-5x - it introduces the possibility of parsing streams without having them in memory - it comes with a new structure internally that makes it more flexible - it introduces asPParser (not a typo) to be able to have the new version working in parallel with the classic asParser The version is already present in the latest Moose 6.1 in parallel with PetitParser. Also, several of the parsers that are shipping with PetitParser were already copied to PetitParser2 as well. You can find more details here: http://www.humane-assessment.com/blog/introducing-petitparser2/ Some more documentation will follow. I think Jan did a wonderful job and the result is quite exciting. Please take a look and let us know what you think. Cheers, Doru -- www.tudorgirba.com www.feenk.com "What we can governs what we wish."

Nov. 8, 2016

Re: [Pharo-users] Converting an Array of Characters to a String

by Bernardo Ezequiel Contreras

something similar String withAll: { $a. Character space. $b }. On Tue, Nov 8, 2016 at 10:52 AM, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > > On Tue, Nov 8, 2016 at 3:42 PM Nicolai Hess <nicolaihess(a)gmail.com> wrote: > >> 2016-11-08 14:31 GMT+01:00 Dimitris Chloupis <kilon.alios(a)gmail.com>: >> >> I feel like stupid but I cannot find a way to convert an Array of >> Characters to a String , I can do with a do: and join characters converted >> to strings to a single string but it feels too many steps. >> >> Is there a simpler way ? >> >> >> String newFrom:{ $a . $b . $c }. >> { $a . $b . $c } as:String. >> >> > Its so weird that > > { $a . $b . $c } as:String. > > works but > > { $a . $b . $c } asString. > > does not > > the latter returns a string that contains something like > > {$S. $e. $d. Character space. $o. $r. $n. $a. $r. $e. C > > In any case Thanks Nicolai it works :) > -- Bernardo E.C. Sent from a cheap desktop computer in South America.

Nov. 8, 2016

Re: [Pharo-users] Converting an Array of Characters to a String

by Dimitris Chloupis

On Tue, Nov 8, 2016 at 3:42 PM Nicolai Hess <nicolaihess(a)gmail.com> wrote: > 2016-11-08 14:31 GMT+01:00 Dimitris Chloupis <kilon.alios(a)gmail.com>: > > I feel like stupid but I cannot find a way to convert an Array of > Characters to a String , I can do with a do: and join characters converted > to strings to a single string but it feels too many steps. > > Is there a simpler way ? > > > String newFrom:{ $a . $b . $c }. > { $a . $b . $c } as:String. > > Its so weird that { $a . $b . $c } as:String. works but { $a . $b . $c } asString. does not the latter returns a string that contains something like {$S. $e. $d. Character space. $o. $r. $n. $a. $r. $e. C In any case Thanks Nicolai it works :)

Nov. 8, 2016

Re: [Pharo-users] Converting an Array of Characters to a String

by Esteban Lorenzano

ah yes, that will work (I was thinking on UFFI and I answered that) :) > On 8 Nov 2016, at 14:41, Nicolai Hess <nicolaihess(a)gmail.com> wrote: > > > > 2016-11-08 14:31 GMT+01:00 Dimitris Chloupis <kilon.alios(a)gmail.com <mailto:kilon.alios@gmail.com>>: > I feel like stupid but I cannot find a way to convert an Array of Characters to a String , I can do with a do: and join characters converted to strings to a single string but it feels too many steps. > > Is there a simpler way ? > > String newFrom:{ $a . $b . $c }. > { $a . $b . $c } as:String. >

Nov. 8, 2016

Re: [Pharo-users] Converting an Array of Characters to a String

by Esteban Lorenzano

(always with Char100 example in mind): s := MyStructure fromHandle: blah. string := s data readString. should work. Esteban > On 8 Nov 2016, at 14:31, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > I feel like stupid but I cannot find a way to convert an Array of Characters to a String , I can do with a do: and join characters converted to strings to a single string but it feels too many steps. > > Is there a simpler way ?

Nov. 8, 2016

Re: [Pharo-users] Converting an Array of Characters to a String

by Nicolai Hess

2016-11-08 14:31 GMT+01:00 Dimitris Chloupis <kilon.alios(a)gmail.com>: > I feel like stupid but I cannot find a way to convert an Array of > Characters to a String , I can do with a do: and join characters converted > to strings to a single string but it feels too many steps. > > Is there a simpler way ? > String newFrom:{ $a . $b . $c }. { $a . $b . $c } as:String.

Nov. 8, 2016

Re: [Pharo-users] UFFI can not generate Structure accessor of type char[100]

by Esteban Lorenzano

ah yesâ¦ I wrote it by heart :P you need to declare the array type size, otherwise there is no point on it :) Char100 := FFITypeArray ofType: aTypeName size: elements. â¦ and the rest is still the same (you replace FFITypeArray class>>ofType:size: occurrences with Char100) Esteban > On 8 Nov 2016, at 14:29, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > by the way your code is wrong there is no FFITypeArray ofType: so it looks I will have to go straight to > > FFITypeArray ofType:'char' size:100 > > of course for my case what you mention as > > FFITypeArray ofType: #char size: 100) fromHandle: (handle copyFrom: 1 to: 100) > > is the one that does exactly what I want. > > > > On Tue, Nov 8, 2016 at 2:38 PM Esteban Lorenzano <estebanlm(a)gmail.com <mailto:estebanlm@gmail.com>> wrote: > yes please :) > >> On 8 Nov 2016, at 13:32, Dimitris Chloupis <kilon.alios(a)gmail.com <mailto:kilon.alios@gmail.com>> wrote: >> >> then great work^2 >> >> Do you want me to add this information to the UFFI documentation ? Probably I will also add some more examples for handles, pointers etc. >> >> I assume this is the repo for the docs of UFFI >> >> https://github.com/SquareBracketAssociates/PharoInProgress <https://github.com/SquareBracketAssociates/PharoInProgress> >> >> correct ? >> >> On Tue, Nov 8, 2016 at 2:12 PM Esteban Lorenzano <estebanlm(a)gmail.com <mailto:estebanlm@gmail.com>> wrote: >>> On 8 Nov 2016, at 12:55, Dimitris Chloupis <kilon.alios(a)gmail.com <mailto:kilon.alios@gmail.com>> wrote: >>> >>> Thank you Esteban >>> >>> By the way I really love the design of UFFI , very clean and quite easy to understand , great work to you and Igor :) >> >> UFFI is just mine ;) >> (but I sanded in giant shoulders as I took Igor work as inspirationâ¦ and to âborrowâ many cool ideas) >> >> Esteban >> >>> >>> On Tue, Nov 8, 2016 at 1:54 PM Esteban Lorenzano <estebanlm(a)gmail.com <mailto:estebanlm@gmail.com>> wrote: >>>> On 8 Nov 2016, at 12:49, Dimitris Chloupis <kilon.alios(a)gmail.com <mailto:kilon.alios@gmail.com>> wrote: >>>> >>>> I was reaching a similar conclusion >>>> >>>> Currently I have a void pointer to the struct with the members I mentioned >>>> >>>> I can get char[100] >>>> >>>> pointerToStruct fromCString >>>> >>>> and I can get the int with >>>> >>>> pointerToStruct getHandle integerAt: 101 size:4 signed: false >>>> >>>> so if I want to pass the address of the pointer to my YourStruct instance will I have to initialize with >>>> >>>> YourStruct fromHandler: (pointerToStruct getHandle) >>>> >>>> is this a correct and safe way to pass the address ? >>> >>> yes. >>> >>> Esteban >>> >>>> >>>> >>>> On Tue, Nov 8, 2016 at 1:21 PM Esteban Lorenzano <estebanlm(a)gmail.com <mailto:estebanlm@gmail.com>> wrote: >>>> it never could. >>>> you need to do a âspecial typeâ, who has to be something like: >>>> >>>> YourStruct class>>initialize >>>> Char100 := FFITypeArray ofType: #char. >>>> >>>> fieldsDesc >>>> ^ #( >>>> Char100 data; >>>> int count; >>>> ) >>>> >>>> but thenâ¦ you want to optimise that and in field accessors, who will look something like this: >>>> >>>> YourStruct >>data >>>> "This method was automatically generated" >>>> ^(FFITypeArray ofType: #char size: 100) fromHandle: (handle copyFrom: 1 to: 100) >>>> >>>> you can change that for: >>>> >>>> YourStruct >>data >>>> "This method was automatically generated" >>>> ^Char100 fromHandle: (handle copyFrom: 1 to: 100) >>>> >>>> and same for setter. >>>> (other way will work, but it will be suboptimal) >>>> >>>> Esteban >>>> >>>> > On 8 Nov 2016, at 12:10, Dimitris Chloupis <kilon.alios(a)gmail.com <mailto:kilon.alios@gmail.com>> wrote: >>>> > >>>> > I have FFIExternalStructure which has at class side >>>> > >>>> > fieldsDesc >>>> > ^#( >>>> > char data[100]; >>>> > int count; >>>> > ) >>>> > >>>> > if I try to do >>>> > >>>> > EphCPPTestStructure rebuildFieldAccessors . >>>> > >>>> > in order to generate the accessors for the members of the struct it complains with an error that it does not recognise the type of " [ " >>>> > >>>> > Does that mean that char arrays are other arrays are not supported as struct members or will I have to do this manually ? >>>> >>>> >> >

Nov. 8, 2016

Converting an Array of Characters to a String

by Dimitris Chloupis

I feel like stupid but I cannot find a way to convert an Array of Characters to a String , I can do with a do: and join characters converted to strings to a single string but it feels too many steps. Is there a simpler way ?

Nov. 8, 2016

Re: [Pharo-users] UFFI can not generate Structure accessor of type char[100]

by Dimitris Chloupis

by the way your code is wrong there is no FFITypeArray ofType: so it looks I will have to go straight to FFITypeArray ofType:'char' size:100 of course for my case what you mention as FFITypeArray ofType: #char size: 100) fromHandle: (handle copyFrom: 1 to: 100) is the one that does exactly what I want. On Tue, Nov 8, 2016 at 2:38 PM Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > yes please :) > > On 8 Nov 2016, at 13:32, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > then great work^2 > > Do you want me to add this information to the UFFI documentation ? > Probably I will also add some more examples for handles, pointers etc. > > I assume this is the repo for the docs of UFFI > > https://github.com/SquareBracketAssociates/PharoInProgress > > correct ? > > On Tue, Nov 8, 2016 at 2:12 PM Esteban Lorenzano <estebanlm(a)gmail.com> > wrote: > > On 8 Nov 2016, at 12:55, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > Thank you Esteban > > By the way I really love the design of UFFI , very clean and quite easy to > understand , great work to you and Igor :) > > > UFFI is just mine ;) > (but I sanded in giant shoulders as I took Igor work as inspirationâ¦ and > to âborrowâ many cool ideas) > > Esteban > > > On Tue, Nov 8, 2016 at 1:54 PM Esteban Lorenzano <estebanlm(a)gmail.com> > wrote: > > On 8 Nov 2016, at 12:49, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > I was reaching a similar conclusion > > Currently I have a void pointer to the struct with the members I mentioned > > I can get char[100] > > pointerToStruct fromCString > > and I can get the int with > > pointerToStruct getHandle integerAt: 101 size:4 signed: false > > so if I want to pass the address of the pointer to my YourStruct instance > will I have to initialize with > > YourStruct fromHandler: (pointerToStruct getHandle) > > is this a correct and safe way to pass the address ? > > > yes. > > Esteban > > > > On Tue, Nov 8, 2016 at 1:21 PM Esteban Lorenzano <estebanlm(a)gmail.com> > wrote: > > it never could. > you need to do a âspecial typeâ, who has to be something like: > > YourStruct class>>initialize > Char100 := FFITypeArray ofType: #char. > > fieldsDesc > ^ #( > Char100 data; > int count; > ) > > but thenâ¦ you want to optimise that and in field accessors, who will look > something like this: > > YourStruct >>data > "This method was automatically generated" > ^(FFITypeArray ofType: #char size: 100) fromHandle: (handle > copyFrom: 1 to: 100) > > you can change that for: > > YourStruct >>data > "This method was automatically generated" > ^Char100 fromHandle: (handle copyFrom: 1 to: 100) > > and same for setter. > (other way will work, but it will be suboptimal) > > Esteban > > > On 8 Nov 2016, at 12:10, Dimitris Chloupis <kilon.alios(a)gmail.com> > wrote: > > > > I have FFIExternalStructure which has at class side > > > > fieldsDesc > > ^#( > > char data[100]; > > int count; > > ) > > > > if I try to do > > > > EphCPPTestStructure rebuildFieldAccessors . > > > > in order to generate the accessors for the members of the struct it > complains with an error that it does not recognise the type of " [ " > > > > Does that mean that char arrays are other arrays are not supported as > struct members or will I have to do this manually ? > > > > >

Nov. 8, 2016

Re: [Pharo-users] Spec: Setting rows height of a pictures list

by Matteo

I think the adaptor will called "MorphicImageFastTableAdaptor", and the model "ImageFastTableAdapter". In the package "Spec-MorphicAdapters", the "MorphicFastTableAdapter" uses an object "FTPluggableIconListMorphAdaptor". Could the "MorphicImageFastTableAdaptor" use directly a "FTTableMorph" object, instead of creating "pluggable" adapter? cheers, Matteo On November 5, 2016 10:31:18 PM GMT+01:00, stepharo <stepharo(a)free.fr> wrote: > > >Le 5/11/16 Ã 15:59, Matteo via Pharo-users a Ã©crit : >> >> Re: [Pharo-users] Spec: Setting rows height of a pictures list.eml >> >> Sujet : >> Re: [Pharo-users] Spec: Setting rows height of a pictures list >> De : >> Matteo <matteob8(a)yahoo.it> >> Date : >> 5/11/16 15:53 >> >> Pour : >> Any question about pharo is welcome <pharo-users(a)lists.pharo.org> >> >> >> Hi Nicolai, >> I think it would be great to have a specific ListModel for pictures, >> like the IconListModel. >> >> Do you know if there's already someone working on a "picture" >ListModel? >Not that I know. >> Could I try to implement it, and its morphic adapter? > >Sure! >Now pay attention that it is probably better to use FastTable on the >morphic level. > >> >> Thanks, >> Matteo >> >> On 31/10/16 15:20, Nicol

Nov. 8, 2016