March 2021 - Pharo-users - lists.pharo.org

change process variable while process is running

by mspgate＠gmail.com

Hello everybody, I am kind of new to Pharo so I apologise if my\ question is silly :)\ how can a change a variable in a process while the process is running?\ for example in:\ \[\[ | msg| msg := 'help me'. 100 timesRepeat: \[(Delay forSeconds: 0.5)\ wait. Transcript show: msg; cr\]\] fork.\ \ how do I change the value of msg while the process is running in order\ to modify what the Transcript is showing?\ is that possible?\ thanks.\ Domenico

March 2, 2021

Re: Error in Pharo 9 under Windows 10

by Markus Wedel

Dear Nacho, I think you could press the gears icon in the top right corner of the Pharo launcher window, then mark the desired virtual machine, then update the installed vm via right-click. Or you could delete the existing virtual machine and it should automatically install a new one when launching a Pharo Image. Best regards Markus > Am 01.03.2021 um 22:20 schrieb Rafael Ignacio MatÃas Sniechowski <0800nacho(a)gmail.com>: > > Thanks, will try to do that. I know how to do it by downloading everything by myself. > But how do I do that with Pharo Launcher? > Cheers, > Nacho > > Ignacio Sniechowski > > > > > > > > > > > > > > > > > > > > On Sun, Feb 28, 2021 at 11:44 PM lb <liangbing64(a)126.com <mailto:liangbing64@126.com>> wrote: > Hi Nacho, > Pls update VM > > > > > > å¨ 2021-03-01 04:56:04ï¼"Rafael Ignacio MatÃas Sniechowski" <0800nacho(a)gmail.com <mailto:0800nacho@gmail.com>> åéï¼ > > Hi, > Every time I try to start a Pharo 9 image I get an error. This happens with both 32 and 64 bit versions, under Windows 10. > I've tried uninstalling and reinstalling Pharo Launcher without avail. > This has been happening for the last 10 days. > I don't know if this is the proper place to post this...if not please let me know. > Attached it's an image with the error I get. > > thanks in advance > Nacho > > > Ignacio Sniechowski > > > > > > > > > > > > > > > > >

March 1, 2021

Re: Sharing classes between packages

by hogoww

Hi David, Indeed, you should move it to another package. However, this package should either: Â Â Â be in its own repository Â Â Â load it with the initial project Â Â Â Â Â Â In this case, you'd have to clone the whole initial project and load only the package that you want to share, which can be quite big. Either way, you'll have to tweak the baseline, as you can read about here: https://github.com/pharo-open-documentation/pharo-wiki/blob/master/General/… Hope this helps. Pierre On 01/03/2021 21:49, David(a)totallyobjects.com wrote: > I guess that the answer is to move the kv into its own package but I > don't know how to refer from one package to another. Can anyone > clarify for me. > > Sent from my Huawei tablet > > > -------- Original Message -------- > Subject: [Pharo-users] Sharing classes between packages > From: David Pennington > To: Any question about pharo is welcome > CC: > > > I have a small Key/Value database that I have written for my > Seaside apps. I have one Package - Family-Accounts which defines > the classes for this database. I am now writing a new Seaside app > (IPMSClacton) that will also need to use the database. How do I > share the code between the two packages? > > David > Totally Objects >

March 1, 2021

Re: Error in Pharo 9 under Windows 10

by Rafael Ignacio MatÃas Sniechowski

Thanks, will try to do that. I know how to do it by downloading everything by myself. But how do I do that with Pharo Launcher? Cheers, Nacho *Ignacio Sniechowski* On Sun, Feb 28, 2021 at 11:44 PM lb <liangbing64(a)126.com> wrote: > Hi Nacho, > Pls update VM > > > > > > > å¨ 2021-03-01 04:56:04ï¼"Rafael Ignacio MatÃas Sniechowski" < > 0800nacho(a)gmail.com> åéï¼ > > Hi, > Every time I try to start a Pharo 9 image I get an error. This happens > with both 32 and 64 bit versions, under Windows 10. > I've tried uninstalling and reinstalling Pharo Launcher without avail. > This has been happening for the last 10 days. > I don't know if this is the proper place to post this...if not please let > me know. > Attached it's an image with the error I get. > > thanks in advance > Nacho > > > *Ignacio Sniechowski* > > > > > > > > > > > > > > > > > >

March 1, 2021

Re: Sharing classes between packages

by David＠totallyobjects.com

March 1, 2021

Sharing classes between packages

by David Pennington

I have a small Key/Value database that I have written for my Seaside apps. I have one Package - Family-Accounts which defines the classes for this database. I am now writing a new Seaside app (IPMSClacton) that will also need to use the database. How do I share the code between the two packages? David Totally Objects

March 1, 2021

Re: Strings in Playground are read only in Pharo 9

by Richard O'Keefe

For what it's worth, the ANSI Smalltalk standard says "The protocols specified for literals do not include any messages that modify the state of the literal objects. The effect of sending a message to an object that is the value of a literal that modifies the state of the literal is undefined." This also includes trying to modify an array literal, and fiddling with the bits of a large integer. That is, according to the ANSI standard, 'abc' is a string but not necessarily a String. I hope that is clear (:-). On Sun, 28 Feb 2021 at 22:57, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Markus, > > 'hello' is a literal string constant, part of the set of constants of a > method (or a doit which like a temporary method disconnected from a class). > > Constants like these are managed by the compiler and can be shared between > different expressions to avoid duplication. > > Changing such a constant is dangerous because it means you are changing > static/compiled code. Consider a method like > > name > ^ 'Markus' > > I could call this method and change the returned string destructively in > place. Next time someone calls it, s/he would get the modified string. Even > worse, s/he would not understand since the source code did not change. > > In the past it was not possible to mark such strings as being constant, > now we can. Which is a big win. > > You can use #copy to get a string that you can modify. > > 'hello' copy at: 2 put: $a; yourself > > HTH, > > Sven > > > On 28 Feb 2021, at 00:50, Markus Wedel <mail(a)markus-wedel.de> wrote: > > > > Hi all, > > > > strings in Playground are read only in Pharo 9.0 Build 1153 so that > > > > 'hello' at: 2 put: $a; yourself > > ctrl+p > > > > This throws an error: > > âModification forbidden: âhelloâ is read-only, hence its field cannot be > modified with $a > > > > which is actually a very nice error message but is this supposed to > happen? > > The example does work in Pharo 8 without problems. > > > > > > Greetings > > Markus >

March 1, 2021

Re: Error in Pharo 9 under Windows 10

by lb

Hi Nacho, Pls update VM å¨ 2021-03-01 04:56:04ï¼"Rafael Ignacio MatÃas Sniechowski" <0800nacho(a)gmail.com> åéï¼ Hi, Every time I try to start a Pharo 9 image I get an error. This happens with both 32 and 64 bit versions, under Windows 10. I've tried uninstalling and reinstalling Pharo Launcher without avail. This has been happening for the last 10 days. I don't know if this is the proper place to post this...if not please let me know. Attached it's an image with the error I get. thanks in advance Nacho Ignacio Sniechowski

March 1, 2021