July 2013 - Pharo-dev - lists.pharo.org

[update 2.0] #20616

by Marcus Denker

20616 ----- 10860 option click on list in TestRunner and others: freeze system https://pharo.fogbugz.com/f/cases/10860 Diff information: http://ss3.gemstone.com/ss/Pharo20/Morphic-MarcusDenker.1374.diff

July 23, 2013

Re: [Pharo-dev] [rmod] Post on how to install pharo

by Guillermo Polito

So far, the HTML tags supported are these: http://en.support.wordpress.com/code/#html-tags and the code should be exported as this: http://en.support.wordpress.com/code/posting-source-code/ For syntax coloring I'm using ruby, just like [code language="ruby"] self bla: 1 + super ble. [/code] On Tue, Jul 23, 2013 at 12:33 PM, Guillermo Polito < guillermopolito(a)gmail.com> wrote: > > > > On Tue, Jul 23, 2013 at 12:24 PM, StÃ©phane Ducasse < > stephane.ducasse(a)inria.fr> wrote: > >> Guilermo >> >> I would like to turn your blog entry into Gutenberg. I will do it while >> reading it as a kata exercise. >> > > Nice! > > >> Now I'm thinking that I could write a outputer for Gutenberg to produce >> the blog contents. >> What is the format used to edit your blog? >> > > I'm writing in wordpress :/... It allows to write a post using a WYSIWYG > and to write it in a kind of HTML. However, for embedding images and > writing code it uses tags between brackets. I cannot find a cool > description on what is exactly the format :(. > > >> Because like that we could change edit gutenberg file and get: >> latex >> html >> blog >> > > Nick Ager didn't show that pier can import wordpress? maybe he can tell > better :) > > >> >> Stef >> >> On Jul 23, 2013, at 11:03 AM, Guillermo Polito <guillermopolito(a)gmail.com> >> wrote: >> >> Hi guys, >> >> I've written a small post on the current mechanisms for download and >> deploy pharo images and vms. Of course it may not be complete, just wanted >> to make noise :). So, feedback and retweets are welcome ;). >> >> >> http://playingwithobjects.wordpress.com/2013/07/23/installing-pharo-in-many… >> >> Guille >> >> >> >

July 23, 2013

Re: [Pharo-dev] [rmod] Post on how to install pharo

by Guillermo Polito

On Tue, Jul 23, 2013 at 12:24 PM, StÃ©phane Ducasse < stephane.ducasse(a)inria.fr> wrote: > Guilermo > > I would like to turn your blog entry into Gutenberg. I will do it while > reading it as a kata exercise. > Nice! > Now I'm thinking that I could write a outputer for Gutenberg to produce > the blog contents. > What is the format used to edit your blog? > I'm writing in wordpress :/... It allows to write a post using a WYSIWYG and to write it in a kind of HTML. However, for embedding images and writing code it uses tags between brackets. I cannot find a cool description on what is exactly the format :(. > Because like that we could change edit gutenberg file and get: > latex > html > blog > Nick Ager didn't show that pier can import wordpress? maybe he can tell better :) > > Stef > > On Jul 23, 2013, at 11:03 AM, Guillermo Polito <guillermopolito(a)gmail.com> > wrote: > > Hi guys, > > I've written a small post on the current mechanisms for download and > deploy pharo images and vms. Of course it may not be complete, just wanted > to make noise :). So, feedback and retweets are welcome ;). > > > http://playingwithobjects.wordpress.com/2013/07/23/installing-pharo-in-many… > > Guille > > >

July 23, 2013

Re: [Pharo-dev] [rmod] Post on how to install pharo

by StÃ©phane Ducasse

Guilermo I would like to turn your blog entry into Gutenberg. I will do it while reading it as a kata exercise. Now I'm thinking that I could write a outputer for Gutenberg to produce the blog contents. What is the format used to edit your blog? Because like that we could change edit gutenberg file and get: latex html blog Stef On Jul 23, 2013, at 11:03 AM, Guillermo Polito <guillermopolito(a)gmail.com> wrote: > Hi guys, > > I've written a small post on the current mechanisms for download and deploy pharo images and vms. Of course it may not be complete, just wanted to make noise :). So, feedback and retweets are welcome ;). > > http://playingwithobjects.wordpress.com/2013/07/23/installing-pharo-in-many… > > Guille

July 23, 2013

Re: [Pharo-dev] [rmod] Post on how to install pharo

by StÃ©phane Ducasse

thanks we love noise :) On Jul 23, 2013, at 11:03 AM, Guillermo Polito <guillermopolito(a)gmail.com> wrote: > Hi guys, > > I've written a small post on the current mechanisms for download and deploy pharo images and vms. Of course it may not be complete, just wanted to make noise :). So, feedback and retweets are welcome ;). > > http://playingwithobjects.wordpress.com/2013/07/23/installing-pharo-in-many… > > Guille

July 23, 2013

Re: [Pharo-dev] unwinding the stack

by StÃ©phane Ducasse

> > Thanks > what is a intervening unwind context? > > I'm not sure I understood the question but: > > Unwind a context means when you return from a context to an outer one far in the stack you need to check for unwind context (= context with 'ensure:'), and execute the unwind block (= ensure: argument). Ok this was what I forgot!. Got it. > > For ex: > > context 1 > context 2 > context 3 (marked with primitive as unwind context) > context 4 > context 5 Non local return to context 1 > > Here the non local return in context 5 goes back to context 1 skipping the rest of the execution of the context 2 - 3 - 4. While going back to context 1 it checks every context (2, 3, 4), detects context 3 as unwindcontext and executes the unwind block of context 3 before continuing the execution in context 1. Excellent. Yes I forgot and I guess that we wrote that somehow in the exception chapter. Stef > > >> >> >> HTH >> Eliot >> >> >> Stef >> >> >> >> -- >> best, >> Eliot > >

July 23, 2013

Post on how to install pharo

by Guillermo Polito

Hi guys, I've written a small post on the current mechanisms for download and deploy pharo images and vms. Of course it may not be complete, just wanted to make noise :). So, feedback and retweets are welcome ;). http://playingwithobjects.wordpress.com/2013/07/23/installing-pharo-in-many… Guille

July 23, 2013

Re: [Pharo-dev] thisContext and block

by StÃ©phane Ducasse

thanks! It makes a lot of sense. I will play with another example because I want to really understand the outerContext of closure vs the home context. Stef On Jul 23, 2013, at 6:58 AM, ClÃ©ment Bera <bera.clement(a)gmail.com> wrote: > This is because of compilation optimization. > > 2013/7/22 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > Hi > > when I execute the following > > first > "Bexp new first" > | temp | > temp := 2. > [ temp. > thisContext inspect.] value. > ^ temp > > tmp in the inspector is nil and does not hold 2 and I was wondering why. > I thought that thisContext was returning the blockContext > In the outercontext of thisContext blockClosure, tmp is also nil. > > > This is because here 'temp.' is evaluated for effect (the value is not stored anywhere) and it has no side effect (reading a variable cannot lead to a modification of state of another object). So the compiler removes it. As it is removed, it is the same as if it was not in the block. So the block cannot access temp. Now write 'temp:= #foo' or 'temp foo' you will get it. > > first > "Bexp new first" > | temp | > temp := 2. > [ temp. > temp traceCr. > thisContext inspect.] value. > ^ temp > > output 2 on the transcript. > > In this case 'temp.' is still removed, but the value of temp still need to be copied in the block for ' temp traceCr.'.'temp traceCr' is also evaluated for effect, but has the side effect to output the transcript, so the compiler cannot remove it. > > Basically the is very few things that the compiler removes, and one of them is variable read for effect, because you are sure it cannot lead to any issue. > > Stef > >

July 23, 2013

Re: [Pharo-dev] unwinding the stack

by ClÃ©ment Bera

2013/7/23 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > > On Jul 23, 2013, at 12:25 AM, Eliot Miranda <eliot.miranda(a)gmail.com> > wrote: > > > > On Mon, Jul 22, 2013 at 1:58 PM, StÃ©phane Ducasse < > stephane.ducasse(a)inria.fr> wrote: > >> Hi guys >> >> I'm trying to explain the following sentence (I wrote long time ago) and >> now I'm stuck >> >> "escaping blocks jump to their home contexts but do not unwind the stack >> after this point" >> > > Seems wrong to me. ^-returns in blocks return to the sender of the home > context. > > > Yes I thought so too. I will remove this sentence because it is blurry and > wrong. I thought I was wrong. > > > >> especially I'm not clear anymore on the unwind the stack. >> > > The stack is unwound either by the VM executing the ^-return or by > MethodCOntext>>#return:, sent from #aboutToReturn:to: if the ^-return found > an intervening unwind context. (The VM sends aboutToReturn:to:). > > > Thanks > what is a intervening unwind context? > I'm not sure I understood the question but: Unwind a context means when you return from a context to an outer one far in the stack you need to check for unwind context (= context with 'ensure:'), and execute the unwind block (= ensure: argument). For ex: context 1 context 2 context 3 (marked with primitive as unwind context) context 4 context 5 Non local return to context 1 Here the non local return in context 5 goes back to context 1 skipping the rest of the execution of the context 2 - 3 - 4. While going back to context 1 it checks every context (2, 3, 4), detects context 3 as unwindcontext and executes the unwind block of context 3 before continuing the execution in context 1. > > > > HTH > Eliot > > >> Stef >> > > > > -- > best, > Eliot > > >

July 23, 2013

Re: [Pharo-dev] thisContext and block

by ClÃ©ment Bera

This is because of compilation optimization. 2013/7/22 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > Hi > > when I execute the following > > first > "Bexp new first" > | temp | > temp := 2. > [ temp. > thisContext inspect.] value. > ^ temp > > tmp in the inspector is nil and does not hold 2 and I was wondering why. > I thought that thisContext was returning the blockContext > In the outercontext of thisContext blockClosure, tmp is also nil. > > This is because here 'temp.' is evaluated for effect (the value is not stored anywhere) and it has no side effect (reading a variable cannot lead to a modification of state of another object). So the compiler removes it. As it is removed, it is the same as if it was not in the block. So the block cannot access temp. Now write 'temp:= #foo' or 'temp foo' you will get it. > first > "Bexp new first" > | temp | > temp := 2. > [ temp. > temp traceCr. > thisContext inspect.] value. > ^ temp > > output 2 on the transcript. > > In this case 'temp.' is still removed, but the value of temp still need to be copied in the block for ' temp traceCr.'.'temp traceCr' is also evaluated for effect, but has the side effect to output the transcript, so the compiler cannot remove it. Basically the is very few things that the compiler removes, and one of them is variable read for effect, because you are sure it cannot lead to any issue. > Stef > >

July 23, 2013