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October 2016

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[ANN] Scale

by Santiago Bragagnolo

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 Oneliner to install: (note it needs sudo) wget -O- 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 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 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. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by phil＠highoctane.be

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 On Sun, Oct 23, 2016 at 6:35 PM, stepharo <stepharo(a)free.fr> wrote: > I see. > > I writing a little example for my new newbies book > > now how can get only two digits after the . > > > Stef > > Le 23/10/16 Ã 18:23, Thierry Goubier a Ã©crit : > > I think that's called 'welcome to the wonderfull world of floating points > approximations' and not a bug :( > > See unums/Gustafson for something more interesting on the subject. > > Thierry > > 2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr>: > >> Hi >> >> I'm wondering if we do not have a bug here >> >> 12.222222222222221 roundTo: 0.1 >> "12.200000000000001" >> >> 12.222222222222221 roundTo: 0.01 >> "12.22" >> >> >> Stef >> >> >> > >

Oct. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by stepharo

Thanks because roundUpTo: did not make it either :) Le 23/10/16 Ã 18:45, Peter Uhnak a Ã©crit : > I usually use 12.222222222222221 round: 2 "12.22". > > Peter > > On Sun, Oct 23, 2016 at 06:38:47PM +0200, stepharo wrote: >> 3.1479 roundUpTo: 0.01 is what I was looking for. >> >> >> Stef >> >> >> >> Le 23/10/16 Ã 18:35, stepharo a Ã©crit : >>> I see. >>> >>> I writing a little example for my new newbies book >>> >>> now how can get only two digits after the . >>> >>> >>> Stef >>> >>> >>> Le 23/10/16 Ã 18:23, Thierry Goubier a Ã©crit : >>>> I think that's called 'welcome to the wonderfull world of >>>> floating points approximations' and not a bug :( >>>> >>>> See unums/Gustafson for something more interesting on the subject. >>>> >>>> Thierry >>>> >>>> 2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr >>>> <mailto:stepharo@free.fr>>: >>>> >>>> Hi >>>> >>>> I'm wondering if we do not have a bug here >>>> >>>> 12.222222222222221 roundTo: 0.1 >>>> "12.200000000000001" >>>> >>>> 12.222222222222221 roundTo: 0.01 >>>> "12.22" >>>> >>>> >>>> Stef >>>> >>>> >>>> >

Oct. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by Peter Uhnak

I usually use 12.222222222222221 round: 2 "12.22". Peter On Sun, Oct 23, 2016 at 06:38:47PM +0200, stepharo wrote: > 3.1479 roundUpTo: 0.01 is what I was looking for. > > > Stef > > > > Le 23/10/16 Ã 18:35, stepharo a Ã©crit : > > > >I see. > > > >I writing a little example for my new newbies book > > > >now how can get only two digits after the . > > > > > >Stef > > > > > >Le 23/10/16 Ã 18:23, Thierry Goubier a Ã©crit : > >>I think that's called 'welcome to the wonderfull world of > >>floating points approximations' and not a bug :( > >> > >>See unums/Gustafson for something more interesting on the subject. > >> > >>Thierry > >> > >>2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr > >><mailto:stepharo@free.fr>>: > >> > >> Hi > >> > >> I'm wondering if we do not have a bug here > >> > >> 12.222222222222221 roundTo: 0.1 > >> "12.200000000000001" > >> > >> 12.222222222222221 roundTo: 0.01 > >> "12.22" > >> > >> > >> Stef > >> > >> > >> > > >

Oct. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by Dimitris Chloupis

aaaaaand I was wrong, my bad On Sun, Oct 23, 2016 at 7:29 PM Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > I think lisp solves this problem by using integers for its floats , or > something along those line, I remember reading about it somewhere when I > was studying common lisp 5 years ago > > Or maybe my memory fails me > > On Sun, Oct 23, 2016 at 7:24 PM Thierry Goubier <thierry.goubier(a)gmail.com> > wrote: > > I think that's called 'welcome to the wonderfull world of floating points > approximations' and not a bug :( > > See unums/Gustafson for something more interesting on the subject. > > Thierry > > > 2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr>: > > Hi > > I'm wondering if we do not have a bug here > > 12.222222222222221 roundTo: 0.1 > "12.200000000000001" > > 12.222222222222221 roundTo: 0.01 > "12.22" > > > Stef > > > >

Oct. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by stepharo

3.1479 roundUpTo: 0.01 is what I was looking for. Stef Le 23/10/16 Ã 18:35, stepharo a Ã©crit : > > I see. > > I writing a little example for my new newbies book > > now how can get only two digits after the . > > > Stef > > > Le 23/10/16 Ã 18:23, Thierry Goubier a Ã©crit : >> I think that's called 'welcome to the wonderfull world of floating >> points approximations' and not a bug :( >> >> See unums/Gustafson for something more interesting on the subject. >> >> Thierry >> >> 2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr >> <mailto:stepharo@free.fr>>: >> >> Hi >> >> I'm wondering if we do not have a bug here >> >> 12.222222222222221 roundTo: 0.1 >> "12.200000000000001" >> >> 12.222222222222221 roundTo: 0.01 >> "12.22" >> >> >> Stef >> >> >> >

Oct. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by stepharo

I see. I writing a little example for my new newbies book now how can get only two digits after the . Stef Le 23/10/16 Ã 18:23, Thierry Goubier a Ã©crit : > I think that's called 'welcome to the wonderfull world of floating > points approximations' and not a bug :( > > See unums/Gustafson for something more interesting on the subject. > > Thierry > > 2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr > <mailto:stepharo@free.fr>>: > > Hi > > I'm wondering if we do not have a bug here > > 12.222222222222221 roundTo: 0.1 > "12.200000000000001" > > 12.222222222222221 roundTo: 0.01 > "12.22" > > > Stef > > >

Oct. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by Dimitris Chloupis

I think lisp solves this problem by using integers for its floats , or something along those line, I remember reading about it somewhere when I was studying common lisp 5 years ago Or maybe my memory fails me On Sun, Oct 23, 2016 at 7:24 PM Thierry Goubier <thierry.goubier(a)gmail.com> wrote: > I think that's called 'welcome to the wonderfull world of floating points > approximations' and not a bug :( > > See unums/Gustafson for something more interesting on the subject. > > Thierry > > > 2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr>: > > Hi > > I'm wondering if we do not have a bug here > > 12.222222222222221 roundTo: 0.1 > "12.200000000000001" > > 12.222222222222221 roundTo: 0.01 > "12.22" > > > Stef > > > >

Oct. 23, 2016

Re: [Pharo-dev] roundTo: strange behavior

by Thierry Goubier

I think that's called 'welcome to the wonderfull world of floating points approximations' and not a bug :( See unums/Gustafson for something more interesting on the subject. Thierry 2016-10-23 18:16 GMT+02:00 stepharo <stepharo(a)free.fr>: > Hi > > I'm wondering if we do not have a bug here > > 12.222222222222221 roundTo: 0.1 > "12.200000000000001" > > 12.222222222222221 roundTo: 0.01 > "12.22" > > > Stef > > >

Oct. 23, 2016

roundTo: strange behavior

by stepharo

Hi I'm wondering if we do not have a bug here 12.222222222222221 roundTo: 0.1 "12.200000000000001" 12.222222222222221 roundTo: 0.01 "12.22" Stef

Oct. 23, 2016

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