- Pharo-dev - lists.pharo.org

Re: [Pharo-dev] roundTo: strange behavior

by stepharo

Hi nicolas So what is the solution? We can integrate fast a solution. I would really like to see them fix in Pharo 60. I'm writing a book for newbie and this is the third time I change one chapter so may be I should stop and throw away this chapter. You see I'm not good in math so even if I try hard I will not have a good solution. This is the same for marcus and most people in our team. I reopened these issues. Stef > > > 2016-10-25 23:22 GMT+02:00 stepharo <stepharo(a)free.fr > <mailto:stepharo@free.fr>>: > > Ok for the advice > > Now round: aNumberOfDigits seems to work fine. > > Stef > > > > No it's not, but issues are timing out too fast ;) > https://pharo.fogbugz.com/f/cases/15471/Can-t-round-Float-fmax-to-2-decimal… > https://pharo.fogbugz.com/f/cases/15472/Fraction-rounding-to-n-decimal-plac… > https://pharo.fogbugz.com/f/cases/15473/Float-round-to-n-decimal-places-is-… > > I hate to say that, but try in python, they got it right... > > > Le 25/10/16 Ã 11:05, Henrik Johansen a Ã©crit : >> +1. >> >> Unless you're dealing with fixed precision* entities, it's >> usually better to specify digits to display in printing methods >> themselves (#printShowingDecimalPlaces: & friends in base image). >> As per previous discussions around this that arise every second >> year or so, rounding the number itself (as long as we're dealing >> with floats) will never work as you want reliably. >> >> Cheers, >> Henry >> >> * And in that case, you'd use ScaledDecimals >> >>> On 23 Oct 2016, at 7:08 , phil(a)highoctane.be >>> <mailto:phil@highoctane.be> wrote: >>> >>> I use the Printf package for that. >>> >>> v := 65.456. >>> 'With 2 decimal digits: %5.2f, or 3 like this: %6.3f' >>> printf: {v. v}. >>> >>> With 2 decimal digits: 65.45, or 3 like this: 65.456 >>> >>> It is in http://www.smalltalkhub.com/#!/~philippeback/HOExtras >>> <http://www.smalltalkhub.com/#%21/%7Ephilippeback/HOExtras> >>> >>> Printf >>> >>> I am just used to C printf and well, I like the way it works. >>> >>> Phil > >

Oct. 26, 2016

Re: [Pharo-dev] [Ann] Stack Android VM

by stepharo

I want to thank Inria to have listen to me (and it was not that simple) to let Santiago work on that. So please use it and show us that you use it. Stef Le 23/10/16 Ã 22:03, Santiago Bragagnolo a Ã©crit : > Still far from production. But since i would happy to have some > feedback, I'm happy to show you some progress on the android VM. Not > yet release. But we have already a way of compiling and deploying an > image into an android device. > > You can check it in this repo github. > https://github.com/sbragagnolo/pharo-vm/ > > The building steps are detailed on the README-Android.md file. > > > Building the Stack AndroidVM > > 1. > > Download the sources fromgithub > <https://github.com/sbragagnolo/pharo-vm> > > git clone --depth=1https://github.com/sbragagnolo/pharo-vm > cd pharo-vm > 2. > > Set-up your environment: This script will download the SDK > installer and NDK R10 > > cd android/scripts > ./setupAndroidEnvironment.st > > This script downloads the content from > > * 'http://dl.google.com/android/repository/android-ndk-r10e-linux-x86_64.zip'. > * 'http://dl.google.com/android/android-sdk_r24.4.1-linux.tgz'. > > After this process you should have available the environment > variables ANDROID_NDK_HOME and ANDROID_SDK_HOME. Ensure this by > checking your .bashrc file at the user's home directory. > > 3. > > Create a new image: this image will be created by pointing to this > local git repository > > cd android/scripts > ./newImage.st > 4. > > Link sources to the build folder: The Android vm relies on a Java > wrapper. This sources must be accessible from the build folder. > > cd android/scripts > ./linkSources.st > 5. > > Generate the sources of the stack vm: This script executes the > generator of the image created on int the 3rd step. > > cd android/scripts > ./generateStackAndroidMake.st > 6. > > Generate the resource image for deployment: This script download > and suites up an image for deployment on the folder > build/assets/SmalltalkRessources > > cd android/scripts > ./newResourceImage.st > > This image created in this point is downloaded with it related VM > for editing and loading the code you want to deploy, or configure > the things you want. > > 7. > > The VM compilation: This script generates the libraries with the > VM code. > > cd build > ./build.sh > 8. > > The Java wrapper compilation and Android Application packaging > > cd build > ./package.sh > 9. > > Installing into your device. If you want to generate an APK file > with your custom name, you will need to deal with the > AndroidManifest.xml before runing the package.sh script :) > > cd build/bin > adb install -r StackActivity-debug.apk > > > - Im currently working on the JIT version of the VM, that still > avoiding me :). > But you have as well the instruction on the same README-Android.me file. > > > Santiago > > > > > >

Oct. 26, 2016

Re: [Pharo-dev] MetaLink to conditionally skip a method execution based on an arg

by Nicolai Hess

Am 23.10.2016 9:22 vorm. schrieb "Yuriy Tymchuk" <yuriy.tymchuk(a)me.com>: > > Iâve also described the question with examples on SO: https://stackoverflow.com/questions/40200546/conditionally-skip-a-method-wi… > Answered on SO. @marcus: Maybe instead links should continue with the original code, if their condition does not hold? >> On 22 Oct 2016, at 23:13, Yuriy Tymchuk <yuriy.tymchuk(a)me.com> wrote: >> >> Hi. >> >> Imagine I have method a: and I want to skip the execution (return self or nil or whatever) when a: is evaluated with parameter 0. I have tried to add a meta link which will run instead of the method with a condition, but the condition did not workâ¦ I have tried to implement the metallic method to do nothing if the arg is 0 otherwise to perform the method, but I end up with an infinite loopâ¦ >> >> Did anybody do something like that already? Any suggestions? >> >> Uko > >

Oct. 26, 2016

Re: [Pharo-dev] keeping threads on topic

by Jimmie Houchin

Thanks for the information. I personally don't have a problem with the ability to search. I have the entire mailing list in a single mailbox in Thunderbird. However the problem with data and searching is how clean is the data, the quality of the metadata, and the constraints you can put on your search parameters. If we can have smaller messages in which the message concerns the topic in the subject, and the message contains primarily the context of the prior emails necessary for the topic. Then we are far better off in our search efforts. Our search results will be cleaner, have fewer false positives and fewer messages to wade through to find what we want. I took a look at your link. The advanced search does offer some nice ways to constrain a search. But if the message and topic of a particular message don't match it will be a false positive. Good mailing list habits are valuable. Thanks again for the link. I am not always at my computer with its resources. And many people would not do what I do anyway. Jimmie Houchin On 10/25/2016 10:22 PM, Dimitris Chloupis wrote: > The forum has a very nice search facility > > http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html > > > On Wed, 26 Oct 2016 at 06:11, Jimmie Houchin <jlhouchin(a)gmail.com > <mailto:jlhouchin@gmail.com>> wrote: > > On 10/23/2016 12:11 AM, Tudor Girba wrote: > > Hi, > > > > The communication traffic around Pharo is constantly increasing > and it is harder and harder to keep up with everything that is > happening. > > > > On the one hand this is great because it shows that our project > is growing healthily. On the other hand, it makes it harder for > people to find the relevant thread and participate in discussions. > This is problematic given that this mailing list is for discussing > development issues that require specific expertise. > > > > To address this, I kindly ask everyone to keep a thread as much > as possible on the topic meant by the title of the thread. > > > > Cheers, > > Tudor > > > > -- > > www.tudorgirba.com <http://www.tudorgirba.com> > > www.feenk.com <http://www.feenk.com> > > > > "Value is always contextual." > > I agree. > > We all know frequently threads take unforeseen directions. If you are > going to take a thread in a direction not on topic with the title, > then > give your email a new title appropriate with the new topic. > > This helps people to better keep up with the mailing list as they can > better discern what messages are of interest to them or not. It also > helps people with particular knowledge know if messages if the message > is something they may need to respond to. > > It also helps the mailing list archives be more valuable for people > searching for answers. > > In addition I would like to encourage people to limit the quoted > material of the email to that which is important to or the context of > what they are replying to. So many emails are replies to long and > increasingly longer emails due to quoting of complete emails only to > make brief comments about small portion of the email. > > These mailing lists are an incredibly valuable resource. They are the > first place I search to find answers. These few simple things can help > them to be cleaner and more valuable as people will more easily find > what they are looking for. > > Thanks. > > Jimmie Houchin > >

Oct. 26, 2016

Re: [Pharo-dev] [Ann] Stack Android VM

by Jimmie Houchin

Thanks for working on this. I greatly look forward to being able to use Pharo on my devices. Exciting times. Jimmie Houchin On 10/23/2016 03:03 PM, Santiago Bragagnolo wrote: > Still far from production. But since i would happy to have some > feedback, I'm happy to show you some progress on the android VM. Not > yet release. But we have already a way of compiling and deploying an > image into an android device. > > You can check it in this repo github. > https://github.com/sbragagnolo/pharo-vm/ > > The building steps are detailed on the README-Android.md file. [snip] https://github.com/sbragagnolo/pharo-vm

Oct. 26, 2016

Re: [Pharo-dev] keeping threads on topic

by Dimitris Chloupis

The forum has a very nice search facility http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html On Wed, 26 Oct 2016 at 06:11, Jimmie Houchin <jlhouchin(a)gmail.com> wrote: > On 10/23/2016 12:11 AM, Tudor Girba wrote: > > Hi, > > > > The communication traffic around Pharo is constantly increasing and it > is harder and harder to keep up with everything that is happening. > > > > On the one hand this is great because it shows that our project is > growing healthily. On the other hand, it makes it harder for people to find > the relevant thread and participate in discussions. This is problematic > given that this mailing list is for discussing development issues that > require specific expertise. > > > > To address this, I kindly ask everyone to keep a thread as much as > possible on the topic meant by the title of the thread. > > > > Cheers, > > Tudor > > > > -- > > www.tudorgirba.com > > www.feenk.com > > > > "Value is always contextual." > > I agree. > > We all know frequently threads take unforeseen directions. If you are > going to take a thread in a direction not on topic with the title, then > give your email a new title appropriate with the new topic. > > This helps people to better keep up with the mailing list as they can > better discern what messages are of interest to them or not. It also > helps people with particular knowledge know if messages if the message > is something they may need to respond to. > > It also helps the mailing list archives be more valuable for people > searching for answers. > > In addition I would like to encourage people to limit the quoted > material of the email to that which is important to or the context of > what they are replying to. So many emails are replies to long and > increasingly longer emails due to quoting of complete emails only to > make brief comments about small portion of the email. > > These mailing lists are an incredibly valuable resource. They are the > first place I search to find answers. These few simple things can help > them to be cleaner and more valuable as people will more easily find > what they are looking for. > > Thanks. > > Jimmie Houchin > > >

Oct. 26, 2016

Re: [Pharo-dev] keeping threads on topic

by Jimmie Houchin

On 10/23/2016 12:11 AM, Tudor Girba wrote: > Hi, > > The communication traffic around Pharo is constantly increasing and it is harder and harder to keep up with everything that is happening. > > On the one hand this is great because it shows that our project is growing healthily. On the other hand, it makes it harder for people to find the relevant thread and participate in discussions. This is problematic given that this mailing list is for discussing development issues that require specific expertise. > > To address this, I kindly ask everyone to keep a thread as much as possible on the topic meant by the title of the thread. > > Cheers, > Tudor > > -- > www.tudorgirba.com > www.feenk.com > > "Value is always contextual." I agree. We all know frequently threads take unforeseen directions. If you are going to take a thread in a direction not on topic with the title, then give your email a new title appropriate with the new topic. This helps people to better keep up with the mailing list as they can better discern what messages are of interest to them or not. It also helps people with particular knowledge know if messages if the message is something they may need to respond to. It also helps the mailing list archives be more valuable for people searching for answers. In addition I would like to encourage people to limit the quoted material of the email to that which is important to or the context of what they are replying to. So many emails are replies to long and increasingly longer emails due to quoting of complete emails only to make brief comments about small portion of the email. These mailing lists are an incredibly valuable resource. They are the first place I search to find answers. These few simple things can help them to be cleaner and more valuable as people will more easily find what they are looking for. Thanks. Jimmie Houchin

Oct. 26, 2016

Re: [Pharo-dev] roundTo: strange behavior

by Nicolas Cellier

2016-10-25 23:22 GMT+02:00 stepharo <stepharo(a)free.fr>: > Ok for the advice > > Now round: aNumberOfDigits seems to work fine. > > Stef > > No it's not, but issues are timing out too fast ;) https://pharo.fogbugz.com/f/cases/15471/Can-t-round-Float-fmax-to-2-decimal… https://pharo.fogbugz.com/f/cases/15472/Fraction-rounding-to-n-decimal-plac… https://pharo.fogbugz.com/f/cases/15473/Float-round-to-n-decimal-places-is-… I hate to say that, but try in python, they got it right... > Le 25/10/16 Ã 11:05, Henrik Johansen a Ã©crit : > > +1. > > Unless you're dealing with fixed precision* entities, it's usually better > to specify digits to display in printing methods themselves > (#printShowingDecimalPlaces: & friends in base image). > As per previous discussions around this that arise every second year or > so, rounding the number itself (as long as we're dealing with floats) will > never work as you want reliably. > > Cheers, > Henry > > * And in that case, you'd use ScaledDecimals > > On 23 Oct 2016, at 7:08 , phil(a)highoctane.be wrote: > > I use the Printf package for that. > > v := 65.456. > 'With 2 decimal digits: %5.2f, or 3 like this: %6.3f' > printf: {v. v}. > > With 2 decimal digits: 65.45, or 3 like this: 65.456 > > It is in http://www.smalltalkhub.com/#!/~philippeback/HOExtras > > Printf > > I am just used to C printf and well, I like the way it works. > > Phil > > >

Oct. 25, 2016

Re: [Pharo-dev] [ANN] Scale

by stepharo

Yes you both are are right. This is why - we started to work on making sure that we can configure an image to be silent (no logging on changes) - we should have a way to save / launch configured images. Stef Le 25/10/16 Ã 09:03, phil(a)highoctane.be a Ã©crit : > Python has virtualenv, where one can install its own little world. > There is no reason we couldn't have an equivalent where a base scale > image is copied and updated with whatever we feel like. > > http://docs.python-guide.org/en/latest/dev/virtualenvs/ > > Phil > > On Tue, Oct 25, 2016 at 5:59 AM, Ben Coman <btc(a)openinworld.com > <mailto:btc@openinworld.com>> wrote: > > On Mon, Oct 24, 2016 at 5:48 PM, Denis Kudriashov > <dionisiydk(a)gmail.com <mailto:dionisiydk@gmail.com>> wrote: > > Really nice project, Santiago. > > > > I have few questions: > > > > - what "system saveAfterRun" actually do? > > > > As I understand it saves image when script completes. Imaging > during script > > I loaded Seaside. Does this command makes Seaside accessible > from any scale > > scripts? > > Image persistence is one of Pharo's most useful features, but I think > its a liability for a system scripting environment. As a > philosophical point, Python/Ruby (somewhat) guarantee scripts start > with the same state each time they are run. I believe this is an > important attribute for system scripting. "saveAfterRun" seems > detrimental to that because you can break the environment for other > scripts, and you can't just reset state by deleting you script. Also > its harder to share scripts since dependencies are not recorded in the > script if the system state has changed. Python/Ruby handle this via a > module import/require facility. Perhaps Scale could provide a > facility to install a Configuration, then export it via Fuel as a > "module" that could be imported into Scale scripts. Loading via Fuel > should be fast enough (??) that Seaside could be accessible from any > Scale script without too much runtime overhead. (I'll add this as an > Issue if discussion indicates interest). > > cheers -ben > > > > > > - system execute: aString into: anImageBundle > > > > What is anImageBundle here? > > > > - What you think to make scripts working as workspace? All > undeclared > > variables will be added to environment automatically. And in case of > > saveAfterRun they will became accessible from any scale scripts. > > > > > > 2016-10-23 20:34 GMT+02:00 Santiago Bragagnolo > > <santiagobragagnolo(a)gmail.com > <mailto:santiagobragagnolo@gmail.com>>: > >> > >> Hi everybody. > >> > >> We are officially releasing a first version of scale. > >> > >> Scale is a command line handler that is there for making easier > the life > >> of the people that uses scripting in linux. As such, we only > tested it so > >> far in linux. It will be for sure easy to adapt it to mac > because its a > >> *nix, but not for windoze. > >> > >> IMPORTANT REMARK: scale is not meant to develop applications, > it is meant > >> to develop scripts in Pharo, to be launched from the command > line. This > >> means that scale does not provide a top level syntax to declare > classes or > >> methods: people should do that as any normal Pharo application. > Scale should > >> be used to invoke such applications. > >> > >> When would you use scale? > >> - For example, to replace some bash scripts used for common > boring tasks > >> (and you are using python or ruby there :P) > >> - Another example, would be when you want to replace bash > scripts that > >> chain things like: > >> ./pharo eval --save "something" > >> ./pharo eval --save "other something" > >> ... > >> > >> Github: https://github.com/guillep/Scale > <https://github.com/guillep/Scale> > >> Oneliner to install: (note it needs sudo) > >> > >> wget -O- > >> > https://raw.githubusercontent.com/guillep/Scale/master/setupScale.sh > <https://raw.githubusercontent.com/guillep/Scale/master/setupScale.sh> > | sudo > >> bash > >> > >> > >> In the repository there is some user level documentation based > on examples > >> and a list of available methods on the magical variable > system. There are > >> many examples as well on the repository. > >> > >> Last but not least, I'm using this project in others two > projects, where > >> it proof it self quite powerful what keeps me on maintaining Scale. > >> > >> These projects are: > >> > >> Pharo Android VM building > https://github.com/sbragagnolo/pharo-vm > <https://github.com/sbragagnolo/pharo-vm> > >> > >> Here I use it for automating the creation of a > >> * new building image, > >> * the creation of new resource image (for deploying on > the android > >> apk), > >> * linking the android sources into the building directory > >> * generating the code from the console > >> > >> MakrosTool https://github.com/sbragagnolo/MakrosTool > <https://github.com/sbragagnolo/MakrosTool> > >> > >> MakrosTool is an extension of scale that adds a second magical > variable > >> for building up component reification in a ROS based environment. > >> > >> > >> Santiago & Guille > >> > >> > >> > >> > >> > > > >

Oct. 25, 2016

Re: [Pharo-dev] roundTo: strange behavior

by stepharo

Ok for the advice Now round: aNumberOfDigits seems to work fine. Stef Le 25/10/16 Ã 11:05, Henrik Johansen a Ã©crit : > +1. > > Unless you're dealing with fixed precision* entities, it's usually > better to specify digits to display in printing methods themselves > (#printShowingDecimalPlaces: & friends in base image). > As per previous discussions around this that arise every second year > or so, rounding the number itself (as long as we're dealing with > floats) will never work as you want reliably. > > Cheers, > Henry > > * And in that case, you'd use ScaledDecimals > >> On 23 Oct 2016, at 7:08 , phil(a)highoctane.be >> <mailto:phil@highoctane.be> wrote: >> >> I use the Printf package for that. >> >> v := 65.456. >> 'With 2 decimal digits: %5.2f, or 3 like this: %6.3f' >> printf: {v. v}. >> >> With 2 decimal digits: 65.45, or 3 like this: 65.456 >> >> It is in http://www.smalltalkhub.com/#!/~philippeback/HOExtras >> <http://www.smalltalkhub.com/#%21/%7Ephilippeback/HOExtras> >> >> Printf >> >> I am just used to C printf and well, I like the way it works. >> >> Phil

Oct. 25, 2016