June 2017 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Pharo6 playground saving semantics and .changes?

by Sven Van Caekenberghe

One of the more hidden Playground features are named Pages. Double-click the page tab title and give it a name, it will then be saved automagically in pharo-local/play-stash (and auto saves on changes from then on). I use that all the time. > On 29 Jun 2017, at 16:45, Tim Mackinnon <tim(a)testit.works> wrote: > > Hi - I really like the playground metaphor, it really is such a nice way to experiment. > > However I've noticed that unlike older versions of Smalltalk, it seems that DoIt operations in playground don't end up in the .changes file anymore (which I guess is a mixed blessing when you want to recover). It seems that the new metaphor is that work you do is saved as a page and you can see versions of your page in the upper right menu? Well sort of - as I haven't quite understood when it saves or doesn't? Often I get duplicate looking pages in that menu and often I make a change and want to keep it but find it doesn't save and if I accidentally close my playground my changes in a page are lost? > > What are the semantics of page saving? > > An example - if you do a few gofer loads of utilities and the put a comment on the first line of the page (which gives it a nice title in the page dropdown), sometimes that comment will be saved other times not? > > I also think it might be nice to remove page versions to help tidy things up. I'm thinking of rolling my sleeves up on this idea - but wanted to understand the vision firsts > > Tim > > Sent from my iPhone > > > Sent from my iPhone >

June 29, 2017

Re: [Pharo-users] Question about writeStream

by Sven Van Caekenberghe

> On 29 Jun 2017, at 16:07, JÃ©rÃ©mie Regnault <jeremie.regnault(a)outlook.com> wrote: > > Hi, > > I am writing tests with streams, and I noticed that a stream opened on a > string doesn't close, but FileStreams do close. Is it normal ? How do you mean that ? That FileStreams close automatically ? That is indeed the case, that they are closed as a finalization action (i.e. when they become garbage), but that I consider that a fail safe thing, not something you should rely on. They should be properly closed, like #readStreamDo: and #writeStreamDo: do. Streams over collections such as Strings do not need closing, as there is no opening either. But general stream code better does. > -- > JÃ©rÃ©mie Regnault >

June 29, 2017

Pharo6 playground saving semantics and .changes?

by Tim Mackinnon

Hi - I really like the playground metaphor, it really is such a nice way to experiment. However I've noticed that unlike older versions of Smalltalk, it seems that DoIt operations in playground don't end up in the .changes file anymore (which I guess is a mixed blessing when you want to recover). It seems that the new metaphor is that work you do is saved as a page and you can see versions of your page in the upper right menu? Well sort of - as I haven't quite understood when it saves or doesn't? Often I get duplicate looking pages in that menu and often I make a change and want to keep it but find it doesn't save and if I accidentally close my playground my changes in a page are lost? What are the semantics of page saving? An example - if you do a few gofer loads of utilities and the put a comment on the first line of the page (which gives it a nice title in the page dropdown), sometimes that comment will be saved other times not? I also think it might be nice to remove page versions to help tidy things up. I'm thinking of rolling my sleeves up on this idea - but wanted to understand the vision firsts Tim Sent from my iPhone Sent from my iPhone

June 29, 2017

Question about writeStream

by JÃ©rÃ©mie Regnault

Hi, I am writing tests with streams, and I noticed that a stream opened on a string doesn't close, but FileStreams do close. Is it normal ? -- JÃ©rÃ©mie Regnault

June 29, 2017

Pharo command line, stdout and integrating with other tools?

by Tim Mackinnon

Hi - I've been playing with using Pharo with Aws lambda and have got an image to launch in that environment. However now I need to better integrate Pharo with its calling environment - and I know there was a concerted effort to make Pharo play better which I should be able to leverage. So I am calling Pharo from a NodeJS wrapper (the suggested aws method for integrating alternative languages like Ruby, Go etc). I got this to work - however as an observation, it is rather awkward passing parameters to Pharo using the "eval" mechanism as other languages and environments frequently use the " character (particularly with Json) and this causes Pharo to fail if you don't \" this. I'm wondering if others have noted this and whether we can do this better somehow? For now a little nodeJS regex fu gets me past it. However my next question is about passing information back to the calling application. I can see that there is a stdout method on Fikestream that I can write to (great), however in my ./pharo eval call, which sends to a class method doing this - it also returns the result of that method or yourself? I guess this convention is great for the "eval 42 factorial" example but not so great of you just want to return some Json via stdout in a format of the calling environment? Is there something simple trick I can do to stop this extra result and just let me use stdout myself? Or do I have to return a Smalltalk string and then regex convert it to a new format in my calling language? I'm wondering if others have done this, or if anyone has some advice? It feels like a usecase that we might be able to do better somehow? Tim Sent from my iPhone

June 29, 2017

Anyone in Oslo ?

by Alexandre Bergel

Hi! I am in Oslo for a couple of days. Anyone up for a beer ? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

June 29, 2017

Custom Glamour browser for Dr. Geo scripting

by Hilaire

Hi, I try to build a dedicated browser for user scripting on DrGeo. I am learning from the Deep into Pharo Glamour chapter, extending the given example. Regarding the method category pane, I need both instance and class side, so I write it like this: categoriesIn: constructor constructor list title: 'Methods'; display: [ :scriptClass | scriptClass organization categories]. constructor list title: 'Script data'; display: [ :scriptClass | scriptClass class organization categories] The browser is defined as: buildBrowser browser := GLMTabulator new. browser column: #scripts; column: #categories; column: #methods. browser transmit to: #scripts; andShow: [ :a | self scriptsIn: a ]. browser transmit from: #scripts; to: #categories; andShow: [ :a | self categoriesIn: a ]. browser transmit from: #scripts; from: #categories; to: #methods; andShow: [:a | self methodsIn: a ]. browser transmit from: #scripts; from: #categories; to: #methods; andShow: [:a | self classMethodsIn: a ]. browser transmit from: #scripts; toOutsidePort: #selectedScript. browser transmit from: #methods; toOutsidePort: #selectedMethod. ^ browser but something is missing to get the listed method right depending on the category is instance or class side. I don't how to do it. Any tips? Thanks Hilaire -- Dr. Geo http://drgeo.eu

June 29, 2017

Logging in with VNC

by sergio ruiz

Hey, all.. I need to be able to log in to my production image with VNC until i am comfortable with the command line interface. I know that every time i have had to do it, it seems like i used a different package. Which package is everyone using these days for remote GUI access? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key:Â http://bit.ly/29z9fG0 #BitMessageÂ BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.Village-Buzz.com http://www.ThoseOptimizeGuys.com http://www.coffee-black.com http://www.painlessfrugality.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

June 29, 2017

Re: [Pharo-users] Pharo on the SqueakJS virtual machine (was "PharoJS")

by Craig Latta

Hi Aik-Siong-- > Great news for Pharo. I presume it will be after you are done with > Squeak running on SqueakJS. Now that I've gotten a release of Caffeine out[1], and written some blog posts about it[2], I've turned my attention to Pharo in web browsers. I also want Squeak and Pharo in web browsers to communicate with their native counterparts, and with other Smalltalks. My goal is a federation of live collaborating Smalltalk nodes on the net. I also have SqueakJS controlling and reprogramming NodeJS instances. > Do you have a roadmap? Bert and I worked on it a bit at ESUG 2016, and it was going alright. Very conservatively, I expect to have it finished this year sometime. > How will WebAssembly help or not with project? I think WebAssembly will enable us to run Cog, with the usual web security compromises. That's also something I'm interested in working on. It may make the SqueakJS virtual machine obsolete. thanks, -C [1] https://caffeine.js.org [2] https://thiscontext.com -- Craig Latta Black Page Digital Amsterdam :: San Francisco craig(a)blackpagedigital.com +31 6 2757 7177 (SMS ok) + 1 415 287 3547 (no SMS)

June 29, 2017

Re: [Pharo-users] ZdcPluginMissing: SSL/TLS plugin initailization failed (VM plugin missing ? OS libraries missing ?)

by Sven Van Caekenberghe

> On 29 Jun 2017, at 06:20, Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> wrote: > > Hi, > > I'm trying to deploy a small web app in Teapot, following the Enterprise > Pharo documentation and so, using Pharo 4 in the server. Installation > went fine, but when I try to actually use the app and I get this error: > > ZdcPluginMissing: SSL/TLS plugin initailization failed (VM plugin > missing ? OS libraries missing ?) > > Looking at [1] I see that this is because Pharo VM is expecting to found > libssl at some place. My server is a virtual Debian 6 64 bits, as > provided by Digital Ocean. When I locate the missing library and make a > symbolic link using: > > ln -s /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0 /usr/lib/libssl.so.1.0.0 > > I still get this behavior: > > ldd libSqueakSSL.so > linux-gate.so.1 (0xf7747000) > libssl.so.1.0.0 => not found > libc.so.6 => /lib32/libc.so.6 (0xf758b000) > /lib/ld-linux.so.2 (0xf774a000) > > So, still is not finding the libssl.so. > > [1] > https://stackoverflow.com/questions/12293670/zodiac-mail-sending-in-pharo-s… > > I don't know if this is related with running a 32 VM inside a Debian 64 > bits distro, but running the chapter 2 example of the Enterprise Pharo, > I have not any problem like this one, on the same virtual server while > deploying the web app. How can I solve this? Probably you forgot sudo apt-get install libssl1.0.0:i386 The following should be enough to run 32 bit pharo on 64 bit ubuntu sudo dpkg --add-architecture i386 sudo apt-get update sudo apt-get install libc6:i386 sudo apt-get install libssl1.0.0:i386 sudo apt-get install libfreetype6:i386 > Thanks, > > Offray > > >

June 29, 2017