July 2011 - Pharo-users - lists.pharo.org

Setting values using reflection

by tgiaccone

I've been playing with smalltalk casually now, for months and really like it. But I"m clearly still a newb. I've reached the point in a small project where I want to set the values on my object based on the values that are in a dictionary. The dictionary is filled with a set of keys that represent attributes on the object. So for a simple example, imagine I have an object which has accessors for 'title' and 'title:'. I want to iterate across the set of keys, being certain that each key is a valid msg to send to myOBject. The send the object the message with the value from the dictionary. Now, I understand that I can do: myObject perform: 'title' asSymbol. and use that as a way to message myObject with the selector 'title' As I understand it this is equivalent to getting the value with: myObject title What I've looked for an been unable to find is how to set the value. What is the equivalent to: myOBject title: 'A new title'. using perform? Thank you for your help. Tony -- View this message in context: http://forum.world.st/Setting-values-using-reflection-tp3676289p3676289.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

July 18, 2011

Re: [Pharo-users] [OSProcess][waitForCommand:] Error during command execution

by Romain Verduci

Le 15 juil. 2011 Ã 20:08, David T. Lewis a Ã©crit : > On Fri, Jul 15, 2011 at 07:05:28PM +0200, Romain Verduci wrote: >> Hi, >> >> I have a problem during the execution of waitForCommand with an unix >> command. >> >> In the message UnixProcess >> waitForCommand: >> >> There is a warning during command execution: *process accessor module not >> available* > > This means that you do not have the required OSProcessPlugin available in > your virtual machine. If you can say what type of computer you are using > (Mac, Windows, Linux...) then someone on the list will probably be able > to suggest right virtual machine to download in order to correct this problem. I used the cogVM and indeed I have tried with the StackVM and it works. Thanks a lot ;) > >> >> If we proceed, there is the following error: *receiver of "runState' is nil >> **because the is no process accessor** **setted ..*** >> >> *Does someone know why this problem appear ? >> * > > This is a bug in OSProcess that has been corrected in the latest version > on SqueakSource. I would encourage you to get the latest version, but don't > worry to much about it because if you get a virtual machine with the > OSProcessPlugin, you will not see this problem anyway. > >> >> Thanks :) >> >> >> Romain >

July 16, 2011

Re: [Pharo-users] [OSProcess][waitForCommand:] Error during command execution

by Romain Verduci

Le 15 juil. 2011 Ã 20:08, David T. Lewis a Ã©crit : > On Fri, Jul 15, 2011 at 07:05:28PM +0200, Romain Verduci wrote: >> Hi, >> >> I have a problem during the execution of waitForCommand with an unix >> command. >> >> In the message UnixProcess >> waitForCommand: >> >> There is a warning during command execution: *process accessor module not >> available* > > This means that you do not have the required OSProcessPlugin available in > your virtual machine. If you can say what type of computer you are using > (Mac, Windows, Linux...) then someone on the list will probably be able > to suggest right virtual machine to download in order to correct this problem. I am using Linux (ubuntu) and sometimes mac os X. > >> >> If we proceed, there is the following error: *receiver of "runState' is nil >> **because the is no process accessor** **setted ..*** >> >> *Does someone know why this problem appear ? >> * > > This is a bug in OSProcess that has been corrected in the latest version > on SqueakSource. I would encourage you to get the latest version, but don't > worry to much about it because if you get a virtual machine with the > OSProcessPlugin, you will not see this problem anyway. I will try this, Thanks > >> >> Thanks :) >> >> >> Romain >

July 16, 2011

Re: [Pharo-users] [OSProcess][waitForCommand:] Error during command execution

by David T. Lewis

On Fri, Jul 15, 2011 at 07:05:28PM +0200, Romain Verduci wrote: > Hi, > > I have a problem during the execution of waitForCommand with an unix > command. > > In the message UnixProcess >> waitForCommand: > > There is a warning during command execution: *process accessor module not > available* This means that you do not have the required OSProcessPlugin available in your virtual machine. If you can say what type of computer you are using (Mac, Windows, Linux...) then someone on the list will probably be able to suggest right virtual machine to download in order to correct this problem. > > If we proceed, there is the following error: *receiver of "runState' is nil > **because the is no process accessor** **setted ..*** > > *Does someone know why this problem appear ? > * This is a bug in OSProcess that has been corrected in the latest version on SqueakSource. I would encourage you to get the latest version, but don't worry to much about it because if you get a virtual machine with the OSProcessPlugin, you will not see this problem anyway. > > Thanks :) > > > Romain

July 15, 2011

[OSProcess][waitForCommand:] Error during command execution

by Romain Verduci

Hi, I have a problem during the execution of waitForCommand with an unix command. In the message UnixProcess >> waitForCommand: There is a warning during command execution: *process accessor module not available* If we proceed, there is the following error: *receiver of "runState' is nil **because the is no process accessor** **setted ..*** *Does someone know why this problem appear ? * Thanks :) Romain

July 15, 2011

Re: [Pharo-users] Where is the world menu built?

by Alain Plantec

also see PragmaMenuBuilder and MenuRegistration classes and their comments. Alain Le 15/07/2011 18:32, Alain Plantec a Ã©crit : > > have a look at here: > http://book.pharo-project.org/book/Tidbits/CustomizingPharo/WorldMenuRegist… > > > Cheers > Alain > > > Le 15/07/2011 16:38, Javier PimÃ¡s a Ã©crit : >> Hi, you should look at WorldState (class side specially) and >> PasteUpMorph. I don't know in which exact moment it gets created but you >> can put a self halt in something like mostUsedToolsOn: . >> >> Regards, >> Javier. >> >> On Fri, Jul 15, 2011 at 11:15 AM, Alex Schenkman <alex(a)schenkman.info >> <mailto:alex@schenkman.info>> wrote: >> >> Hi List, >> >> I want to create a menu like the World menu, and leave it up (stayUp). >> I could not find where it is built. >> How can I find it? >> >> Thanks! >> >> >> >> >> -- >> Lic. Javier PimÃ¡s >> Ciudad de Buenos Aires > > >

July 15, 2011

Re: [Pharo-users] Where is the world menu built?

by Alain Plantec

have a look at here: http://book.pharo-project.org/book/Tidbits/CustomizingPharo/WorldMenuRegist… Cheers Alain Le 15/07/2011 16:38, Javier PimÃ¡s a Ã©crit : > Hi, you should look at WorldState (class side specially) and > PasteUpMorph. I don't know in which exact moment it gets created but you > can put a self halt in something like mostUsedToolsOn: . > > Regards, > Javier. > > On Fri, Jul 15, 2011 at 11:15 AM, Alex Schenkman <alex(a)schenkman.info > <mailto:alex@schenkman.info>> wrote: > > Hi List, > > I want to create a menu like the World menu, and leave it up (stayUp). > I could not find where it is built. > How can I find it? > > Thanks! > > > > > -- > Lic. Javier PimÃ¡s > Ciudad de Buenos Aires

July 15, 2011

Re: [Pharo-users] Where is the world menu built?

by Javier PimÃ¡s

Hi, you should look at WorldState (class side specially) and PasteUpMorph. I don't know in which exact moment it gets created but you can put a self halt in something like mostUsedToolsOn: . Regards, Javier. On Fri, Jul 15, 2011 at 11:15 AM, Alex Schenkman <alex(a)schenkman.info>wrote: > Hi List, > > I want to create a menu like the World menu, and leave it up (stayUp). > I could not find where it is built. > How can I find it? > > Thanks! > -- Lic. Javier PimÃ¡s Ciudad de Buenos Aires

July 15, 2011

Where is the world menu built?

by Alex Schenkman

Hi List, I want to create a menu like the World menu, and leave it up (stayUp). I could not find where it is built. How can I find it? Thanks!

July 15, 2011

Re: [Pharo-users] Autosave the image

by Janko MivÅ¡ek

Well, autosaving image is not so scary thing and it is possible without troubles. And it is a must for any image-based persistency solution. Current Aida one-click has for instance an hourly snapshot enabled by default. Also I have all my images snapshoted automatically every hour, being production or development. Both VW and gradually Pharo ones too. Not to mention that image running Squeak website snapshots every hour for years too. You snapshot Squeak/Pharo image by: SmalltalkImage current saveSession In any case, we need to recheck and cleanup that snapshot procedure to be safe and viable solution for persistency, if there are really some problems yet there to popup. If visualWorks can spapshot cleanly, why Pharo cannot? Best regards Janko S, Davorin Rusevljan piÅ¡e: > On Fri, Jul 15, 2011 at 10:56 AM, Alex Schenkman <alex(a)schenkman.info> wrote: >> Hi list, >> Is there a setting for autosaving the image every few minutes? >> Is this a bad idea? >> How do I save the image programmatically? >> Thanks in advance! > > I would think it is a bad idea. Because: > > - you could easily end up with inconsistent, and therefore unusable > autosaved image > - saving manually is not such a big chore > - saving monticello packages adds protection as well, and it also > offers versioning > - even if everything else fails, you still have your .changes file > > BTW, I think that rebuilding your work image from the blank one using > your packages periodically is a good habit. > > Davorin Rusevljan > http://www.cloud208.com/ > > -- Janko MivÅ¡ek Svetovalec za informatiko Eranova d.o.o. Ljubljana, Slovenija www.eranova.si tel: 01 514 22 55 faks: 01 514 22 56 gsm: 031 674 565

July 15, 2011