November 2014 - Pharo-users

Memoization Question

by phil＠highoctane.be

How can I do memoization in Pharo? I mean, a generic mechanism that will help me wrap the caching around the method invocations / messages. I have expensive calls that do not have to refresh their results as often as they are called. TIA Phil

Nov. 3, 2014

Re: [Pharo-users] Zoomable & Infinitely scrollable PasteupMorph

by kilon alios

Yes I understand this already, but I assume you mean something that already works with morphs which something I did not realise when I first replied.Dont know if Roassal offers something similar for mophs, but since none said so already I will assume it does not. In any case moving Morphic to Athens will need quite an effort since there are so many morphs to port. I dont think your request is unreasonable. On Mon, Nov 3, 2014 at 4:29 AM, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > kilon.alios wrote > > I dont get why we need zoomable and infinitable scrollable pasteupmorph, > > I need an IDE that does not cram my self expression into a multi-paned > browser. PasteUpMorph is an implementation detail that I'd be happy to > upgrade if there's something better. > > > > ----- > Cheers, > Sean > -- > View this message in context: > http://forum.world.st/Zoomable-Infinitely-scrollable-PasteupMorph-tp4778229… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

Nov. 3, 2014

Re: [Pharo-users] Zoomable & Infinitely scrollable PasteupMorph

by Sean P. DeNigris

kilon.alios wrote > I dont get why we need zoomable and infinitable scrollable pasteupmorph, I need an IDE that does not cram my self expression into a multi-paned browser. PasteUpMorph is an implementation detail that I'd be happy to upgrade if there's something better. ----- Cheers, Sean -- View this message in context: http://forum.world.st/Zoomable-Infinitely-scrollable-PasteupMorph-tp4778229… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 3, 2014

Re: [Pharo-users] OSProcess command never ends

by David T. Lewis

On Sun, Nov 02, 2014 at 07:28:44PM -0500, Offray Vladimir Luna C??rdenas wrote: > Thanks David and Juan, > > I was trying to run a pandoc conversion from markdown to html and I had > an error inside my command. Once corrected it works without any problem > and generates the desired file. One note on adding "exec" is that I get > this message on the playground: > > "an ExternalUnixOSProcess with pid 21552 on /bin/sh (complete, normal > termination with status 0)" > > which seems better. Despite of both working I will use the exec > suggestion to have a better message from external process. > Using the exec shell command is a good idea. Just for information, the ExternalUnixOSProcess object is a proxy for the real external OS process, which started by running the /bin/sh program. When you use exec to run your pandoc program, the pandoc program will begin running in the same external OS process that was originally running the /bin/sh program. The ExternalUnixOSProcess object does not know that you did this, so it still displays itself as "an ExternalUnixOSProcess ... on /bin/sh" even though the OS process is now actually running your pandoc program instead. But the exit status 0 came from your pandoc program, which is exactly what you wanted. Dave

Nov. 3, 2014

Re: [Pharo-users] OSProcess command never ends

by Offray Vladimir Luna CÃ¡rdenas

Thanks David and Juan, I was trying to run a pandoc conversion from markdown to html and I had an error inside my command. Once corrected it works without any problem and generates the desired file. One note on adding "exec" is that I get this message on the playground: "an ExternalUnixOSProcess with pid 21552 on /bin/sh (complete, normal termination with status 0)" which seems better. Despite of both working I will use the exec suggestion to have a better message from external process. Cheers, Offray On 11/02/2014 06:40 PM, Juan Ignacio Vaccarezza wrote: > Hi Offray I had some issues controlling the process's life cycle and I fixed > using the "exec" linux program. > I'm using something like: OSProcess command: 'exec programToExecute'. > Then I'm able to kill the process correctly and query the status. > > Hope it helps. > > Regards, > Juan. > > On Sun, Nov 2, 2014 at 7:54 PM, Offray Vladimir Luna CÃ¡rdenas <offray(a)riseup.net > <mailto:offray@riseup.net>> wrote: > > Hi all. > > I'm having problems with OSProcess. When I run "OSProcess command: 'my > command'" on Linux, the Moose playground says that "an ExternalUnixOSProcess > with pid 20887 on /bin/sh (running)", but the external process never ends. > What I'm missing? > > Cheers, > > Offray > >

Nov. 3, 2014

Re: [Pharo-users] OSProcess command never ends

by Juan Ignacio Vaccarezza

Hi Offray I had some issues controlling the process's life cycle and I fixed using the "exec" linux program. I'm using something like: OSProcess command: 'exec programToExecute'. Then I'm able to kill the process correctly and query the status. Hope it helps. Regards, Juan. On Sun, Nov 2, 2014 at 7:54 PM, Offray Vladimir Luna CÃ¡rdenas < offray(a)riseup.net> wrote: > Hi all. > > I'm having problems with OSProcess. When I run "OSProcess command: 'my > command'" on Linux, the Moose playground says that "an > ExternalUnixOSProcess with pid 20887 on /bin/sh (running)", but the > external process never ends. What I'm missing? > > Cheers, > > Offray > >

Nov. 2, 2014

Re: [Pharo-users] OSProcess command never ends

by David T. Lewis

On Sun, Nov 02, 2014 at 05:54:32PM -0500, Offray Vladimir Luna C??rdenas wrote: > Hi all. > > I'm having problems with OSProcess. When I run "OSProcess command: 'my > command'" on Linux, the Moose playground says that "an > ExternalUnixOSProcess with pid 20887 on /bin/sh (running)", but the > external process never ends. What I'm missing? > Hi Offray, The most likely explanation is that the process is actually still running. Can you say what kind of program this is? Dave

Nov. 2, 2014

OSProcess command never ends

by Offray Vladimir Luna CÃ¡rdenas

Hi all. I'm having problems with OSProcess. When I run "OSProcess command: 'my command'" on Linux, the Moose playground says that "an ExternalUnixOSProcess with pid 20887 on /bin/sh (running)", but the external process never ends. What I'm missing? Cheers, Offray

Nov. 2, 2014

Re: [Pharo-users] Reactive Programming - anything like that in our realm?

by Guillermo Polito

Well, a couple months ago I read this paper: http://infoscience.epfl.ch/record/176887/files/DeprecatingObservers2012.pdf I got inspired and Hacked up a morph that draws when you click on it, using the following code: Reactor loop: [ :reactor | | path | path := PathShape vertices: { (reactor next: RMouseDown) position}. self draw: path. reactor loopUntil: RMouseUp with: [ | move | move := reactor next: RMouseMove. path addVertex: move position. self draw: path. ]. self finishDrawing. ] on: self announcer. p := RReactivePolygon new. w := p openInWindow. w extent: 400@400. Of course it was just a dirty start, but if it is of use to anybody, here is the code: MCSmalltalkhubRepository owner: 'Guille' project: 'playground' user: '' password: '' On Sun, Nov 2, 2014 at 12:42 AM, Skip Lentz <skip_meesie(a)hotmail.com> wrote: > That sounds like a cool idea. > > I found this through a quick Google: http://ss3.gemstone.com/ss/FRP.html, > but not much else.. > > Doesn't seem to be in development anymore either. > > Skip > > ------------------------------ > From: phil(a)highoctane.be > Date: Sun, 2 Nov 2014 00:22:24 +0100 > To: pharo-users(a)lists.pharo.org; seaside(a)lists.squeakfoundation.org > Subject: [Pharo-users] Reactive Programming - anything like that in our > realm? > > > I was reading https://gist.github.com/staltz/868e7e9bc2a7b8c1f754 > > It looks like that this is where the new apps are going. > > Do we have anything on that Rx front? > > Phil >

Nov. 2, 2014

Re: [Pharo-users] Porting to a MAC

by kilon alios

I shall continue using Dolphin though, the ability to create > Windows executables is too useful to give up. > > whats the difference with ziping the pharo folder and sending it to your user ? you can rename both the folder and then exe file., change the icon etc. And Pharo does not even need install.

Nov. 2, 2014