August 2012 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] [Pharo-users] New feature in Nautilus

by Mariano Martinez Peck

On Mon, Aug 6, 2012 at 11:06 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > Ben > > this is gorgeous :) > simply gorgeous. > This opens a lot of possibilities. > > > I hope you will enjoy it, and as usual if you have cool ideas, let me > know ;) > of course I do :) > - I imagine that we will be able to have multiple methods not > compiled so the red border/corner should be more important. > - Now may be when a method is pinned down we should get a slight > grey background. > - right clicking on a method could open and pin automatically a > method. > - I should try it. > one important point is to now where a free (non pinned > method will show up) > - may be we should use the coral syntax for methods > or add decoration so that we know in which class the method > belongs to > Point>>extent: > [ > ] > because the help text is not that efficient to show the location > - I would also love different display layouts to choose: horizontal, vertical, rows/columns, etc :) > > - may be t would be good to have a way not to open extra methods when we > have already 3 or 4 but to replace a free one. > > Stef > > > > > > Hello guys :) > > > > I just wanted to show you the new feature I just finished to implement > into Nautilus: the multi methods edition > > > > http://dl.dropbox.com/u/24369478/MultiMethods.mov > > > > The video is quite short (1min) but it will be integrated soon in the > image so ;) > > > > Some explanation: > > - now you can "pin" a text area, it will "freeze" the context, so > you can edit it and save it without problems > > - you can have a many as wanted > > - the scroll pane is a bit clever to always keep the maximum size > for the current edition (but there are splitters, so you can set it as you > want) > > - you can "unpin" a text area, and it closes it (to add: check if > there are pending changes) > > - the glitch about the color is the video has been fixed already > (but I am too lazy to make another video ^^) > > - the frozen area get a help text which tells the method the > source code comes from > > - the corresponding button have the same help text > > - clicking on the button jump to the method > > > > > > > > Ben > > > -- Mariano http://marianopeck.wordpress.com

Aug. 6, 2012

Re: [Pharo-project] [Pharo-users] New feature in Nautilus

by StÃ©phane Ducasse

Ben this is gorgeous :) simply gorgeous. This opens a lot of possibilities. > I hope you will enjoy it, and as usual if you have cool ideas, let me know ;) of course I do :) - I imagine that we will be able to have multiple methods not compiled so the red border/corner should be more important. - Now may be when a method is pinned down we should get a slight grey background. - right clicking on a method could open and pin automatically a method. - I should try it. one important point is to now where a free (non pinned method will show up) - may be we should use the coral syntax for methods or add decoration so that we know in which class the method belongs to Point>>extent: [ ] because the help text is not that efficient to show the location - may be t would be good to have a way not to open extra methods when we have already 3 or 4 but to replace a free one. Stef > Hello guys :) > > I just wanted to show you the new feature I just finished to implement into Nautilus: the multi methods edition > > http://dl.dropbox.com/u/24369478/MultiMethods.mov > > The video is quite short (1min) but it will be integrated soon in the image so ;) > > Some explanation: > - now you can "pin" a text area, it will "freeze" the context, so you can edit it and save it without problems > - you can have a many as wanted > - the scroll pane is a bit clever to always keep the maximum size for the current edition (but there are splitters, so you can set it as you want) > - you can "unpin" a text area, and it closes it (to add: check if there are pending changes) > - the glitch about the color is the video has been fixed already (but I am too lazy to make another video ^^) > - the frozen area get a help text which tells the method the source code comes from > - the corresponding button have the same help text > - clicking on the button jump to the method > > > > Ben

Aug. 6, 2012

Re: [Pharo-project] [Pharo-users] New feature in Nautilus

by Mariano Martinez Peck

awesome!!! On Mon, Aug 6, 2012 at 1:48 AM, Benjamin < benjamin.vanryseghem.pharo(a)gmail.com> wrote: > Hello guys :) > > I just wanted to show you the new feature I just finished to implement > into Nautilus: the multi methods edition > > http://dl.dropbox.com/u/24369478/MultiMethods.mov > > The video is quite short (1min) but it will be integrated soon in the > image so ;) > > Some explanation: > - now you can "pin" a text area, it will "freeze" the context, so > you can edit it and save it without problems > - you can have a many as wanted > - the scroll pane is a bit clever to always keep the maximum size > for the current edition (but there are splitters, so you can set it as you > want) > - you can "unpin" a text area, and it closes it (to add: check if > there are pending changes) > - the glitch about the color is the video has been fixed already > (but I am too lazy to make another video ^^) > - the frozen area get a help text which tells the method the > source code comes from > - the corresponding button have the same help text > - clicking on the button jump to the method > > I hope you will enjoy it, and as usual if you have cool ideas, let me know > ;) > > Ben > -- Mariano http://marianopeck.wordpress.com

Aug. 6, 2012

Re: [Pharo-project] Differential and Integral calculus in Pharo?

by S Krish

I trained bunch of 4 smalltalkers to push its life ahead. It was a great piece of work, looked slick on VW and according to the Tektronix guys, the engineers preferred it to the C++ version... they were being asked to use.. so it was being revived when I heard last in 2005. But Tektronix itself got bought over not much long after.. On Fri, Aug 3, 2012 at 9:08 PM, Dale Henrichs <dhenrich(a)vmware.com> wrote: > Krish, > > Haha, funny that you mention that ... I wrote that software, called ADS > (for Analog IC Design System), while working at Tektronix. That was the > project that I cut my Smalltalk teeth on:) > > I started the project using the Tek 4404 in 1985. > > When Tektronix got out of the Smalltalk business (another story) I ported > ADS to ObjectWorks. I left Tektronix in 1992 to go to work for Digitalk. > > The team at Tektronix kept working on ADS, porting it to the newer > platforms over time ... > > The last time I checked ADS was still being used ... that was around 2005, > I think. > > So it's had a long and productive lifetime. > > Dale > > ----- Original Message ----- > | From: "S Krish" <krishnamachari.sudhakar(a)gmail.com> > | To: Pharo-project(a)lists.gforge.inria.fr > | Sent: Friday, August 3, 2012 5:55:28 AM > | Subject: Re: [Pharo-project] Differential and Integral calculus in Pharo? > | > | > | > | Yes, I remember my love for Kirchoff's circuit laws years back..!!.. > | > | > | Electronics: > | > | > | > | A matrix version of Kirchhoff's current law is the basis of most > | circuit simulation software , such as SPICE / PSPICE. Interesting to > | have a interface to PSPICE as Tektronix had/ may still have in VW. > | Build it out of Pharo, we could have the challenge to Cadence..with > | their C++ ecquivalent.. > | > | > | Had an opportunity to see that VW stuff with its simulation of VLSI > | circuits running up 60000 elements.. and complex simulations.. real > | time. Cool stuff.. > | > | > | > | On Thu, Aug 2, 2012 at 3:33 AM, Clara Allende < > | clari.allende(a)gmail.com > wrote: > | > | > | Hi guys, after having exhausting four months of Physics lessons, I > | decided that would be fun to write a program to deal with > | Electricity problems :) (Yeah, I'm not a normal person :P) > | > | > | So, I need to make differential and integral calculus, are there any > | libraries to do so? Or any place that I can take a look at? > | > | > | Thanks in advance! > | > | > | Cheers > | > >

Aug. 6, 2012

[Pharo-project] New feature in Nautilus

by Torsten Bergmann

Not able to display it on small device. Why *.mov format and not something easily accessible like putting it on youtube, vimeo, ...? Thx T.

Aug. 6, 2012

Re: [Pharo-project] New feature in Nautilus

by Stuart Herring

Excellent! Any chance of having a vertical split instead of horizontal though? Regards, Stuart On 6 August 2012 09:48, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: > Hello guys :) > > I just wanted to show you the new feature I just finished to implement into Nautilus: the multi methods edition > > http://dl.dropbox.com/u/24369478/MultiMethods.mov > > The video is quite short (1min) but it will be integrated soon in the image so ;) > > Some explanation: > - now you can "pin" a text area, it will "freeze" the context, so you can edit it and save it without problems > - you can have a many as wanted > - the scroll pane is a bit clever to always keep the maximum size for the current edition (but there are splitters, so you can set it as you want) > - you can "unpin" a text area, and it closes it (to add: check if there are pending changes) > - the glitch about the color is the video has been fixed already (but I am too lazy to make another video ^^) > - the frozen area get a help text which tells the method the source code comes from > - the corresponding button have the same help text > - clicking on the button jump to the method > > I hope you will enjoy it, and as usual if you have cool ideas, let me know ;) > > Ben

Aug. 6, 2012

Re: [Pharo-project] Differential and Integral calculus in Pharo?

by David Shaffer

On Aug 5, 2012, at 5:20 PM, Schwab,Wilhelm K wrote: > short of symbolic manipulation (e.g. maple), all we do is discretize and approximate, right? > > Integration (aka quadrature) is "easy" but numerical diff is very unstable. ODEs solve well w/ Runge-Kutta methods. > > Definitely, for some simple problems. Just to scratch the surface...Besset only provides two quadrature methods: Romberg and Simpson both of which are very problematic for many integrals (accumulation of underflow being one of the more common but I'm sure google can probably give you a longer list than I can). If I remember correctly neither of his algorithms employ adaptive step sizes (although I think that they respond to "data sources" with varying step sizes properly) so be ready for arbitrarily large errors with rapidly varying integrands. Most of the better libraries provide adaptive integrators and several variants of them because the world of "quadrature" is not one-size-fits all. The book "Numerical Recipes" (Press et al) touches the only the tip of this iceberg but its a start for those that want to go beyond Besset's book. As for diff-eqs: I don't think Besset includes Runge-Kutta or any other diff-eq integrators. RK or Adam's Bashforth are simple enough to implement, though, but again said implementation will likely be problematic, especially for very stiff equations but even in simpler cases for systems of equations that have singularities (despite the name, singularities in systems of equations are very common). More sophisticated solvers deal with these things well or one looks for specialized solvers for the problems at hand. None of this touches on problems that will likely arise from the types of problems the original poster is trying to solve (they only specified E & M). Maxwell's equations (time and space dependent PDE's) will require making both time and space discrete, which in multiple dimensions can be prohibitive due to both memory and time constraints. Normally one has to apply some knowledge of the physics to simplify the problem...or just start with a very simple problem ;-) I'm assuming the original poster will start with some problems with high degrees of symmetry and move forward from there. That is a great approach to learning numerical approaches to solving physics problems and simple tools will get them a long way. David

Aug. 6, 2012

Re: [Pharo-project] [Pharo-users] New feature in Nautilus

by Hernan Wilkinson

hey, that pretty cool! It would be great if you could press a button or something and have a diff between the methods :-) On Sun, Aug 5, 2012 at 8:48 PM, Benjamin < benjamin.vanryseghem.pharo(a)gmail.com> wrote: > Hello guys :) > > I just wanted to show you the new feature I just finished to implement > into Nautilus: the multi methods edition > > http://dl.dropbox.com/u/24369478/MultiMethods.mov > > The video is quite short (1min) but it will be integrated soon in the > image so ;) > > Some explanation: > - now you can "pin" a text area, it will "freeze" the context, so > you can edit it and save it without problems > - you can have a many as wanted > - the scroll pane is a bit clever to always keep the maximum size > for the current edition (but there are splitters, so you can set it as you > want) > - you can "unpin" a text area, and it closes it (to add: check if > there are pending changes) > - the glitch about the color is the video has been fixed already > (but I am too lazy to make another video ^^) > - the frozen area get a help text which tells the method the > source code comes from > - the corresponding button have the same help text > - clicking on the button jump to the method > > I hope you will enjoy it, and as usual if you have cool ideas, let me know > ;) > > Ben > -- *HernÃ¡n Wilkinson Agile Software Development, Teaching & Coaching* *Phone: +54 - 011 - 4311 - 8404** Mobile: +54 - 911 - 4470 - 7207 email: hernan.wilkinson(a)10Pines.com site: http://www.10Pines.com <http://www.10pines.com/>* Address: Paraguay 523, Floor 7 N, Buenos Aires, Argentina

Aug. 6, 2012

[Pharo-project] New feature in Nautilus

by Benjamin

Hello guys :) I just wanted to show you the new feature I just finished to implement into Nautilus: the multi methods edition http://dl.dropbox.com/u/24369478/MultiMethods.mov The video is quite short (1min) but it will be integrated soon in the image so ;) Some explanation: - now you can "pin" a text area, it will "freeze" the context, so you can edit it and save it without problems - you can have a many as wanted - the scroll pane is a bit clever to always keep the maximum size for the current edition (but there are splitters, so you can set it as you want) - you can "unpin" a text area, and it closes it (to add: check if there are pending changes) - the glitch about the color is the video has been fixed already (but I am too lazy to make another video ^^) - the frozen area get a help text which tells the method the source code comes from - the corresponding button have the same help text - clicking on the button jump to the method I hope you will enjoy it, and as usual if you have cool ideas, let me know ;) Ben

Aug. 5, 2012

[Pharo-project] OComplection

by Camillo Bruni

the more time I spend with OCompletion the more I think it's the wrong model: NECompletion provides in many cases way better / quicker results NOCompletion does tons of magic to increase the chances of a correct hit, neglecting - self sends - super sends - ClassSends which is basically the main source for getting nice input... I think NOCompletion should be removed. The only thing that might maintain is a Database which will give back a date for a given selector so we can sort them accordingly. But IMO that can be solved muuuuch easier. Things against NOCompletion: - not documentation whatsoever (no class comments no comments no categories... nada) - totally breaks type completion (self sends usw...) - duplication of NECompletion... Since I don't see anybody maintaining this dead body we should remove it from the system!

Aug. 5, 2012