- Pharo-users - lists.pharo.org

Re: [Pharo-users] Build Pharo VM with --dynamic-linker

by Luke Gorrie

Hi Alistair, Just an idea: One alternative could be to use patchelf [1] to modify the dynamic library path in an existing binary. My understanding is that this method is very robust and widely used. [1]: https://nixos.org/patchelf.html On 5 April 2017 at 09:14, Alistair Grant <akgrant0710(a)gmail.com> wrote: > Hi All, > > I'm still working on getting Pharo packaged with snapcraft. The latest > hurdle is that 32 bit applications won't load correctly because the > snapcraft environment means that ld-linux.so.2 isn't in the expected > location. > > My understanding is that adding the appropriate --dynamic-linker flag > should solve the problem, defining: > > export LDFLAGS="-Wl,--dynamic-linker=/snap/pharo/x1/lib/ld-linux.so.2" > > successfully builds, but the pharo executable still has the default > location: > > $ strings pharo-vm/pharo | grep ld-linux > /lib/ld-linux.so.2 > > Can someone point me to where I should modify the build scipt(s) so I > can set --dynamic-linker appropriately? > > > Thanks! > Alistair > >

April 5, 2017

Build Pharo VM with --dynamic-linker

by Alistair Grant

Hi All, I'm still working on getting Pharo packaged with snapcraft. The latest hurdle is that 32 bit applications won't load correctly because the snapcraft environment means that ld-linux.so.2 isn't in the expected location. My understanding is that adding the appropriate --dynamic-linker flag should solve the problem, defining: export LDFLAGS="-Wl,--dynamic-linker=/snap/pharo/x1/lib/ld-linux.so.2" successfully builds, but the pharo executable still has the default location: $ strings pharo-vm/pharo | grep ld-linux /lib/ld-linux.so.2 Can someone point me to where I should modify the build scipt(s) so I can set --dynamic-linker appropriately? Thanks! Alistair

April 5, 2017

Neural Networks in Pharo

by Oleksandr Zaytsev

Hello! Several weeks ago I've announced my NeuralNetworks project. Thank you very much for your ideas and feedback. As suggested, I wrote examples for every class and tested my perceptron on linearly-separable logical functions. I have just completed a post about my implementation of a single-layer perceptron: https://medium.com/@i.oleks/single-layer-perceptron-in-pharo-5b13246a041d. It has a detailed explanation of every part of the design and illustrates different approaches to implementation. Please, tell me what you think. Are my class diagrams correct or did I mess something up? Is there a design pattern that I should consider? Do you think that I should do something differently? Should I improve the quality of my code? Yours sincerely, Oleksandr

April 5, 2017

Re: [Pharo-users] FileReference / and parent

by Alistair Grant

Hi Stef, On Tue, Apr 04, 2017 at 04:33:56PM +0200, Stephane Ducasse wrote: > Hi alistair > > We should target Pharo 70. Yep, I saw Esteban's message saying he hopes 6.0 is only a week away, so this can definitely wait. > Now it is great that you help improving the file frameworks. > Could you open a bug entry? Yep, I was just waiting to see if there was lots of resistance to these changes (which there doesn't seem to be). > Do you have tests? I was working on them when this email arrived. :-) I expect it will take me a week to get them to the point I'm happy (this is a part time hobby), but they'll definitely be part of the slice / pull request when I submit it. Cheers, Alistair > > Stef > > On Mon, Apr 3, 2017 at 2:04 PM, Alistair Grant <akgrant0710(a)gmail.com> > wrote: > > > Hi All, > > > > I previously suggested a change to Path>>/ which actually covered two > > issues: > > > > 1. The handling of the parent directory notation, i.e. ".." > > 2. The construction of path segments when appending a string. > > > > As Damien pointed out, the first issue needs a bit more consideration. > > > > I think the second point is still problematic and can be addressed > > separately. In particular: > > > > ('/a/b/c' asFileReference / 'd/e/f') parent "File @ /a/b/c" > > > > I would expect the result to be "File @ /a/b/c/d/e" > > > > The fix is straightforward (although someone may be able to propose a > > more elgant solution): > > > > -- > > / aString > > | path additionalPath index | > > > > aString isEmptyOrNil > > ifTrue: [ Error signal: 'Path element cannot be empty or > > nil']. > > > > additionalPath := Path from: aString. > > path := self class new: self size + additionalPath size. > > path copyFrom: self. > > index := self size + 1. > > additionalPath do: [ :each | > > path at: index put: each. > > index := index + 1. > > ]. > > ^ path > > -- > > > > 1. Do you agree with the proposed change? > > 2. (Assuming you agree): Should we target Pharo 6.0 or 7.0? > > On one side, this is clearly a bug, on the other, no one has reported > > it to date, so it isn't having a big impact. > > > > Thanks, > > Alistair > > > >

April 4, 2017

Re: [Pharo-users] Smacc how to test scanner

by Thierry Goubier

Hi Stef, I think it is possible. After compiling your parser and scanner classes, take your scanner class and create it on a stream stefScanner := StefScanner on: (ReadStream on: 'My test string for my parser'). Then each token will be retrieved with SmaCCScanner>>#next stefScanner next Regards, Thierry 2017-04-04 15:01 GMT+02:00 Stephane Ducasse <stepharo.self(a)gmail.com>: > Hi > > When writing grammar I would like to test the scanner. > And I would like to this without having to define a special rule (in > addition to the one of the language). Is it possible to get access to the > scanner and ask it to scan the stream? > > Stef >

April 4, 2017

Re: [Pharo-users] FileReference / and parent

by Stephane Ducasse

Hi alistair We should target Pharo 70. Now it is great that you help improving the file frameworks. Could you open a bug entry? Do you have tests? Stef On Mon, Apr 3, 2017 at 2:04 PM, Alistair Grant <akgrant0710(a)gmail.com> wrote: > Hi All, > > I previously suggested a change to Path>>/ which actually covered two > issues: > > 1. The handling of the parent directory notation, i.e. ".." > 2. The construction of path segments when appending a string. > > As Damien pointed out, the first issue needs a bit more consideration. > > I think the second point is still problematic and can be addressed > separately. In particular: > > ('/a/b/c' asFileReference / 'd/e/f') parent "File @ /a/b/c" > > I would expect the result to be "File @ /a/b/c/d/e" > > The fix is straightforward (although someone may be able to propose a > more elgant solution): > > -- > / aString > | path additionalPath index | > > aString isEmptyOrNil > ifTrue: [ Error signal: 'Path element cannot be empty or > nil']. > > additionalPath := Path from: aString. > path := self class new: self size + additionalPath size. > path copyFrom: self. > index := self size + 1. > additionalPath do: [ :each | > path at: index put: each. > index := index + 1. > ]. > ^ path > -- > > 1. Do you agree with the proposed change? > 2. (Assuming you agree): Should we target Pharo 6.0 or 7.0? > On one side, this is clearly a bug, on the other, no one has reported > it to date, so it isn't having a big impact. > > Thanks, > Alistair > >

April 4, 2017

Smacc how to test scanner

by Stephane Ducasse

Hi When writing grammar I would like to test the scanner. And I would like to this without having to define a special rule (in addition to the one of the language). Is it possible to get access to the scanner and ask it to scan the stream? Stef

April 4, 2017

Re: [Pharo-users] Recommended stable Pharo 5.0 VM for Linux users?

by Luke Gorrie

On 4 April 2017 at 12:01, Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > well, Iâm working on commit also generated sources as an amendâ¦ but you > will need to wait a couple of days for that :) > Sounds great, thanks in advance!

April 4, 2017

Re: [Pharo-users] Recommended stable Pharo 5.0 VM for Linux users?

by Esteban Lorenzano

> On 4 Apr 2017, at 10:55, Luke Gorrie <luke(a)snabb.co> wrote: > > Hi again Esteban, > > On 4 April 2017 at 08:44, Esteban Lorenzano <estebanlm(a)gmail.com <mailto:estebanlm@gmail.com>> wrote: > in fact, I will promote a new stable soon, so Iâd recommend for now take the master branch of https://github.com/pharo-project/pharo-vm <https://github.com/pharo-project/pharo-vm> > > Could you possibly spin a (alpha) release that I could use? well, Iâm working on commit also generated sources as an amendâ¦ but you will need to wait a couple of days for that :) Esteban > > The problem with building directly from Git is that then I need to use another Pharo for bootstrapping and this will complicate the build process considerably. I can't use the get.pharo.org <http://get.pharo.org/> method on NixOS both because the binary won't be compatible and because I need all dependencies to be locked down with a known sha256. So I would need to build the previous VM release from source and combine that with a compatible (pre-5.0) image to run VMMaker. This sounds a bit complicated, time consuming, and prone to error if I am using a much older image than the official releases for bootstrapping. > > Cheers! > -Luke > >

April 4, 2017

jobs@mediagenix.tv

by Stephane Ducasse

Mediagenix (managing 1700+ channels for 65+ Media networks and 10K users) developed in Smalltalk is looking for people: jobs(a)mediagenix.tv http://www.mediagenix.tv/en/jobs Stef

April 4, 2017