- Pharo-users - lists.pharo.org

Re: What can you do with Pharo?

by Kasper Osterbye

Cheers I restarted with smalltalk in the form of Pharo a few years back, so in a somewhat similar situation. I have done several different things: Contributed to a number of different things in the Pharo community, fixing issues, commented on issues, and been involved in one of the sub-areas of Pharo (markdown support in the system itself) We own a small hobby farm of 30 sheeps with 50-60 lambs a year. I have made a tool to help all the management of this. I am responsible for memberships and fees in our kayakclub. I have made a system which help me keep information consistent across the few platforms we use to make sure all are billed the right amount. My wife and I keep track of our pension stock portefolio ourselves using a system I built (rather specific to the csv files I am able to pull from the bank). So, I believe one can build anything. The learning curve is somewhat steep, and many libraries have odd names, the code quality varies from elegant to over-engineered (in my view). But there is always friendly help on discord which is very nice. Best, Kasper > On 2 Feb 2022, at 08.55, contactme(a)kathe.in wrote: > > I am new to Pharo, so pardon my ignorance. > > I used to be a professional developer between 1996 and 2007 during which time I developed personal Management Information Systems for employees at my company's HRD using Microsoft Access, then moved on to leading a team of C++ developers to build a graphical operating environment atop the bare Linux kernel, then took up rapid prototyping using PHP at various Web-related startups. > > I have been aware of Smalltalk since 1999 and have only fiddled-around with it, though have failed to learn how to produce software due to the different syntax (as compared to C++ and PHP). > > I would like to focus on Smalltalk more seriously and found the cleanness of Pharo to be quite refreshing. > My problem is that I can't figure out what I could build using the wonderful tools in the amazing environment that is Pharo. > > Project ideas are most welcome, though, I no longer wish to develop for the Web. > > Best regards, > > ~Kathe >

Feb. 2, 2022

What is "Fluid"?

by contactme＠kathe.in

I have attached 2 cropped screen-captures of the same class displayed in the class browser; class-smalltalk.png is the regular class syntax, class-fluid.png is the same class but with the "Fluid" checkbox selected, and shows a different syntax. May I know what that is all about? There's a different terminology too, something called "slot", which I have faint memories of being quite like that in "Self" environments. Thank you, ~Kathe Â

Feb. 2, 2022

What can you do with Pharo?

by contactme＠kathe.in

I am new to Pharo, so pardon my ignorance. I used to be a professional developer between 1996 and 2007 during which time I developed personal Management Information Systems for employees at my company's HRD using Microsoft Access, then moved on to leading a team of C++ developers to build a graphical operating environment atop the bare Linux kernel, then took up rapid prototyping using PHP at various Web-related startups. I have been aware of Smalltalk since 1999 and have only fiddled-around with it, though have failed to learn how to produce software due to the different syntax (as compared to C++ and PHP). I would like to focus on Smalltalk more seriously and found the cleanness of Pharo to be quite refreshing. My problem is that I can't figure out what I could build using the wonderful tools in the amazing environment that is Pharo. Project ideas are most welcome, though, I no longer wish to develop for the Web. Best regards, ~Kathe Â

Feb. 2, 2022

Re: PharoDays'22: Inscriptions are open!

by Bernardo Ezequiel Contreras

any video recordings? On Tue, Feb 1, 2022 at 10:20 AM Russ Whaley <whaley.russ(a)gmail.com> wrote: > Any opportunity for virtual attendance at any of these sessions? > > On Tue, Feb 1, 2022 at 5:26 AM Guillermo Polito <guillermopolito(a)gmail.com> > wrote: > >> >> -------------------------------------------------------------------------------- >> Pharo Days >> >> March 3rd and 4th, Lille, France >> >> https://days.pharo.org/ >> ââââââââââââââââââââââââââââââââââââââââ >> >> Inscriptions are open! >> >> Do not miss the opportunity to meet the Pharo programming environment and >> its community! PharoDays is a unique event where you can meet other >> Pharoers, discover latest advances, and share your experience. Hand-ons >> sessions are there to help you getting started on advance topics. Follow >> the "Show us your project" sessions to get immersed in Pharo lively >> community. >> >> This year, PharoDays is a mix of technical talks and hand-ons. Come to >> join business chat and enjoy friendly atmosphere and discuss with experts. >> Check the tentative schedule: from building command line interfaces to >> web applications, through modern desktop applications, visualisations, >> debugging and even a live music performance! >> >> See you in march! >> > > > -- > Russ Whaley > whaley.russ(a)gmail.com > -- Bernardo E.C. Sent from a cheap desktop computer in South America.

Feb. 2, 2022

Re: PharoDays'22: Inscriptions are open!

by Russ Whaley

Any opportunity for virtual attendance at any of these sessions? On Tue, Feb 1, 2022 at 5:26 AM Guillermo Polito <guillermopolito(a)gmail.com> wrote: > > -------------------------------------------------------------------------------- > Pharo Days > > March 3rd and 4th, Lille, France > > https://days.pharo.org/ > ââââââââââââââââââââââââââââââââââââââââ > > Inscriptions are open! > > Do not miss the opportunity to meet the Pharo programming environment and > its community! PharoDays is a unique event where you can meet other > Pharoers, discover latest advances, and share your experience. Hand-ons > sessions are there to help you getting started on advance topics. Follow > the "Show us your project" sessions to get immersed in Pharo lively > community. > > This year, PharoDays is a mix of technical talks and hand-ons. Come to > join business chat and enjoy friendly atmosphere and discuss with experts. > Check the tentative schedule: from building command line interfaces to web > applications, through modern desktop applications, visualisations, > debugging and even a live music performance! > > See you in march! > -- Russ Whaley whaley.russ(a)gmail.com

Feb. 1, 2022

PharoDays'22: Inscriptions are open!

by Guillermo Polito

-------------------------------------------------------------------------------- Pharo Days March 3rd and 4th, Lille, France https://days.pharo.org/ <https://days.pharo.org/> ââââââââââââââââââââââââââââââââââââââââ Inscriptions are open! Do not miss the opportunity to meet the Pharo programming environment and its community! PharoDays is a unique event where you can meet other Pharoers, discover latest advances, and share your experience. Hand-ons sessions are there to help you getting started on advance topics. Follow the "Show us your project" sessions to get immersed in Pharo lively community. This year, PharoDays is a mix of technical talks and hand-ons. Come to join business chat and enjoy friendly atmosphere and discuss with experts. Check the tentative schedule: from building command line interfaces to web applications, through modern desktop applications, visualisations, debugging and even a live music performance! See you in march!

Feb. 1, 2022

Re: Cairo rendering - why the difference between Pharo and VisualWorks - Quartz?

by Stewart MacLean

Hi Esteban, Yes, I create Rossal shapes (including a custom PangoLabel) and then open the canvas using Morphic. Interestingly if I use the command line pango-view to render to a file, the results are the same as Pharo. On Sat, Jan 29, 2022 at 9:59 PM Esteban Lorenzano <estebanlm(a)netc.eu> wrote: > Hi, > > Are you rendering your Cairo results inside a Morphic window? > > Esteban > On Jan 29 2022, at 8:42 am, Stewart Maclean <stewart(a)xtra.co.nz> wrote: > > > Hi, > > I am working on a proof of concept reimplementation of an application > developed in VisualWorks using Cairo and Pango. > > When I compare the renderings I see that the VisualWorks has a finer > grained resolution. > > Initially I thought is was to do with my anti aliasing settings, but upon > further investigation I'm wondering if it is because the VisualWorks uses > the Quartz backend. > > Please see the attached for a comparison - Pharo rendering using Cairo and > Pango on the left, VisualWorks using Cairo and Pango on the right. Notice > the almost double the number of "pixels". > > I've tried switching to using the Quartz Athens surface, but nothing gets > displayed. > > I would appreciate it if someone can confirm that my analysis is correct, > and that in order to get the better results I would need to hook up to the > Quartz backend? > > Thanks, > > Stewart > >

Jan. 29, 2022

Re: Cairo rendering - why the difference between Pharo and VisualWorks - Quartz?

by Esteban Lorenzano

Hi, Are you rendering your Cairo results inside a Morphic window? Esteban On Jan 29 2022, at 8:42 am, Stewart Maclean <stewart(a)xtra.co.nz> wrote: > > Hi, > > I am working on a proof of concept reimplementation of an application developed in VisualWorks using Cairo and Pango. > > When I compare the renderings I see that the VisualWorks has a finer grained resolution. > > Initially I thought is was to do with my anti aliasing settings, but upon further investigation I'm wondering if it is because the VisualWorks uses the Quartz backend. > > Please see the attached for a comparison - Pharo rendering using Cairo and Pango on the left, VisualWorks using Cairo and Pango on the right. Notice the almost double the number of "pixels". > > I've tried switching to using the Quartz Athens surface, but nothing gets displayed. > > I would appreciate it if someone can confirm that my analysis is correct, and that in order to get the better results I would need to hook up to the Quartz backend? > > Thanks, > > Stewart

Jan. 29, 2022

Cairo rendering - why the difference between Pharo and VisualWorks - Quartz?

by Stewart Maclean

Hi, I am working on a proof of concept reimplementation of an application developed in VisualWorks using Cairo and Pango. When I compare the renderings I see that the VisualWorks has a finer grained resolution. Initially I thought is was to do with my anti aliasing settings, but upon further investigation I'm wondering if it is because the VisualWorks uses the Quartz backend. Please see the attached for a comparison - Pharo rendering using Cairo and Pango on the left, VisualWorks using Cairo and Pango on the right. Notice the almost double the number of "pixels". I've tried switching to using the Quartz Athens surface, but nothing gets displayed. I would appreciate it if someone can confirm that my analysis is correct, and that in order to get the better results I would need to hook up to the Quartz backend? Thanks, Stewart

Jan. 29, 2022

Re: Too many parenthesis - a matter of syntax

by Vitor Medina Cruz

I think that's OK when you can choose when to use parentheses. If you think it would improve readability it is ok to use it, the problem is to be forced to use it even when you think it decreases readability, what I believe to be the case in discussion. On Thu, Jan 27, 2022 at 3:24 PM Russ Whaley <whaley.russ(a)gmail.com> wrote: > What I like about parentheses (and I hate parentheses) is that it allows > me to view/describe the intent of the code. When parens are not used, it is > up to me (perhaps years later) to determine whether the original developer > (sometimes me) understood (or not) the actual 'order of processing'. > Parens - or another vehicle - should help me understand the intent (as > would detailed comments) - so I can devise tests (oh yeah, are those > available, too?) for the intent - even if it is just me in the debugger. > > So, I'm for whatever helps me understand the intent of the code - even if > there is some slick way to nest everything. I generally prefer breaking > nested processes down into multiple steps. Benchmarking rarely shows > significant performance differences, for me. > > (and I've used parentheses 7 times in this one email!) :-) > > Russ > > On Wed, Jan 26, 2022 at 4:20 AM Kasper Osterbye <kasper.osterbye(a)gmail.com> > wrote: > >> Cheers all >> >> I have noticed that I often ends up with quite a number of nested >> expressions, for example: >> >> (((json at: 'tree') >> select: [ :e | (e at: 'type') = âblob' ]) >> collect: [:e | Path from: (e at: 'path')]) >> select: [ :p | p segments last >> in: [ :name | (name endsWith: '.md') | >> (name endsWith: '.mic') ] ] >> >> What kind of proposals (if any) have been for a different syntax which >> could give a more streamlined syntax? >> >> My own thinking has been around an alternative to the cascade semicolon. >> What symbol to use does not matter for me, but something like >> json at: âtree' Âº >> select: [ :e | ((e at: 'type') = 'blobâ)]Âº >> collect: [:e | Path from: (e at: 'pathâ)]Âº >> select: [ :p | p segments last >> in: [ :name | (name endsWith: '.md') | (name endsWith: >> '.mic') ] ] >> >> Basically, a send the right hand expression to the result of the left >> hand expression. >> >> Has anyone ever tried this, or is it just one of the many small >> annoyances best left alone? >> >> Best, >> >> Kasper > > > > -- > Russ Whaley > whaley.russ(a)gmail.com >

Jan. 28, 2022