September 2014 - Pharo-users

Re: [Pharo-users] Date text converter/formatter

by Sven Van Caekenberghe

On 02 Sep 2014, at 21:39, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > Thank you. It is certainly better than the base parser. > But for formats I can't pass Date objects to #format:, I have to > convert them to ZTimestamp before. (ZTimestampFormat fromString: '2001/02/03') format: Date today. Can you give an example of what does not work for you ? > Curiosity #1: Why did you use an example date string instead of using > regular patterns like yyyy, dd, hh/hh24, etc? That is why the formatter/parser was written in the first place ;-) It is modelled after a Go standard library (http://golang.org/src/pkg/time/format.go) and some Ruby library I can't remember the name of. I implemented this as a proof of concept to see if/how it could be done. > Regards! > Esteban A. Maringolo > > > 2014-09-02 16:07 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: >> Check out ZTimestampFormatter (load ConfigurationOfZTimestamp). From the class comment: >> >> === >> I am ZTimestampFormat, an implementation of a textual representation for a timestamp, date or time that can be used for formatting or parsing. >> >> You instanciate me by specifying the textual format by example, based on a #reference timetamp. >> Each component of the example representation is numbered from largest to smallest unit: >> 1=year >> 2=month >> 3=dayInMonth >> 4=hour (16 in 24 hour format) >> 5=minute >> 6=second >> as in the ISO representation: >> 2001-02-03T16:05:06Z which is a Saterday. >> Example format strings can be found in my class accessing protocol or in the unit tests. >> >> To specifiy a format, you write the reference date so that it matches the representation that you want. >> >> (ZTimestampFormat fromString: 'SAT, FEB 03 2001 (16:05:06)') >> format: ZTimestamp now. >> >> I can be used for unabiguous, stricter parsing as well. >> >> (ZTimestampFormat fromString: '02/03/01 (16:05:06)') >> parse: '10/10/10 (12:01:01)'. >> >> The list of possible keys and their interpretation #formatSpecifications. >> I can translate month and weekday names to 4 different languages, English, French, German and Dutch. >> I can optionally use a timezone to convert UTC/GMT/Zulu timestamps to local time. >> === >> >> Sven >> >> On 02 Sep 2014, at 20:51, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: >> >>> Does exist an "user friendly" Date text converter and/or formatter package? >>> >>> >>> I'd like to specify the format of certain dates, in the way you >>> normally do this, it is... with a string such as 'dd/mm/yyyy' or >>> 'dd/mmm/yyyy'. >>> >>> Date's #printOn:format: expects a different parameter, which seems >>> really convoluted. [1] >>> >>> And because I'll convert back and forth from/to String I'd like to >>> know if there is a parser (other than DateParser). >>> >>> Thank you! >>> >>> >>> Esteban A. Maringolo >>> >>> [1] compared with popular casting/formatting functions found in other >>> languages/dialects >>> >> >> >

Sept. 2, 2014

Re: [Pharo-users] best solution to store data

by Alain Rastoul

Forgort to say: It's great to see Pharo apps coming to business world ! keep on. I wish you succeed Alain

Sept. 2, 2014

Re: [Pharo-users] best solution to store data

by Alain Rastoul

Hi Roelof, This is a very broad question with a lot of options, there is no short answer. If I had to choose a relational database approach from the beginning, I would choose Sqlite, it's a very nice db, small, fast, works very well with Pharo (I used it some time ago with FFI, didn't know about native boost mapping, it's cool), can be used with other guis and tools and, should my data or requirements grow unexpectedly, I could move to Postgresql or some other bigger db without too much stress. For an object approach , I would still choose a relational db for storage (same as previously) with an object relational mapping framework like Glorp on top of it, not an object system for storage (magma or gemstone - I'm not saying that they are bad!). Beware that relational system (like object systems) will require some specific skills at some point (I like relational systems for myself, but very often see they are widely misunderstood, even by those who develop with). In any case, if I were you, I would first choose to defer my choice :) until I have a more detailed idea of what I want/have to do, and I would start very small with a file based approach (STON) and a Data Access Layer of my own on top of it, so that I could adapt it to my future requirements or choices (relational, object or nosql database like mongo). I would even develop this DAL later and start with a single document approach (a simple read/write of the whole stuff with STON). The most important is : don't get lost in underlying technical choices from the beginning (plus it's bad for health), make choices you can change. And stay focused on your goal : your application. my 2c Regards, Alain

Sept. 2, 2014

Re: [Pharo-users] [Article] Reddit.st - In 10 Cool Pharo Classes

by Johan Fabry

On Sep 2, 2014, at 2:03 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > On 02 Sep 2014, at 18:54, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > >> jfabry wrote >>> the tutorials are missing the basic explanation of the use of workspaces >>> and browsers, and I donât know where to get some documentation that treats >>> just that. Any pointers to that kind of material? >> >> PBE? > > Yes, I would say so too, chapters 1 - 5 of http://kilon.gitbooks.io/pbe/ should be more up to date. Ah, a more up to date version of the beginning PBE. Excellent, thanks! ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

Sept. 2, 2014

Re: [Pharo-users] Date text converter/formatter

by Esteban A. Maringolo

Thank you. It is certainly better than the base parser. But for formats I can't pass Date objects to #format:, I have to convert them to ZTimestamp before. Curiosity #1: Why did you use an example date string instead of using regular patterns like yyyy, dd, hh/hh24, etc? Regards! Esteban A. Maringolo 2014-09-02 16:07 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > Check out ZTimestampFormatter (load ConfigurationOfZTimestamp). From the class comment: > > === > I am ZTimestampFormat, an implementation of a textual representation for a timestamp, date or time that can be used for formatting or parsing. > > You instanciate me by specifying the textual format by example, based on a #reference timetamp. > Each component of the example representation is numbered from largest to smallest unit: > 1=year > 2=month > 3=dayInMonth > 4=hour (16 in 24 hour format) > 5=minute > 6=second > as in the ISO representation: > 2001-02-03T16:05:06Z which is a Saterday. > Example format strings can be found in my class accessing protocol or in the unit tests. > > To specifiy a format, you write the reference date so that it matches the representation that you want. > > (ZTimestampFormat fromString: 'SAT, FEB 03 2001 (16:05:06)') > format: ZTimestamp now. > > I can be used for unabiguous, stricter parsing as well. > > (ZTimestampFormat fromString: '02/03/01 (16:05:06)') > parse: '10/10/10 (12:01:01)'. > > The list of possible keys and their interpretation #formatSpecifications. > I can translate month and weekday names to 4 different languages, English, French, German and Dutch. > I can optionally use a timezone to convert UTC/GMT/Zulu timestamps to local time. > === > > Sven > > On 02 Sep 2014, at 20:51, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > >> Does exist an "user friendly" Date text converter and/or formatter package? >> >> >> I'd like to specify the format of certain dates, in the way you >> normally do this, it is... with a string such as 'dd/mm/yyyy' or >> 'dd/mmm/yyyy'. >> >> Date's #printOn:format: expects a different parameter, which seems >> really convoluted. [1] >> >> And because I'll convert back and forth from/to String I'd like to >> know if there is a parser (other than DateParser). >> >> Thank you! >> >> >> Esteban A. Maringolo >> >> [1] compared with popular casting/formatting functions found in other >> languages/dialects >> > >

Sept. 2, 2014

Re: [Pharo-users] Date text converter/formatter

by Sven Van Caekenberghe

Check out ZTimestampFormatter (load ConfigurationOfZTimestamp). From the class comment: === I am ZTimestampFormat, an implementation of a textual representation for a timestamp, date or time that can be used for formatting or parsing. You instanciate me by specifying the textual format by example, based on a #reference timetamp. Each component of the example representation is numbered from largest to smallest unit: 1=year 2=month 3=dayInMonth 4=hour (16 in 24 hour format) 5=minute 6=second as in the ISO representation: 2001-02-03T16:05:06Z which is a Saterday. Example format strings can be found in my class accessing protocol or in the unit tests. To specifiy a format, you write the reference date so that it matches the representation that you want. (ZTimestampFormat fromString: 'SAT, FEB 03 2001 (16:05:06)') format: ZTimestamp now. I can be used for unabiguous, stricter parsing as well. (ZTimestampFormat fromString: '02/03/01 (16:05:06)') parse: '10/10/10 (12:01:01)'. The list of possible keys and their interpretation #formatSpecifications. I can translate month and weekday names to 4 different languages, English, French, German and Dutch. I can optionally use a timezone to convert UTC/GMT/Zulu timestamps to local time. === Sven On 02 Sep 2014, at 20:51, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > Does exist an "user friendly" Date text converter and/or formatter package? > > > I'd like to specify the format of certain dates, in the way you > normally do this, it is... with a string such as 'dd/mm/yyyy' or > 'dd/mmm/yyyy'. > > Date's #printOn:format: expects a different parameter, which seems > really convoluted. [1] > > And because I'll convert back and forth from/to String I'd like to > know if there is a parser (other than DateParser). > > Thank you! > > > Esteban A. Maringolo > > [1] compared with popular casting/formatting functions found in other > languages/dialects >

Sept. 2, 2014

Date text converter/formatter

by Esteban A. Maringolo

Does exist an "user friendly" Date text converter and/or formatter package? I'd like to specify the format of certain dates, in the way you normally do this, it is... with a string such as 'dd/mm/yyyy' or 'dd/mmm/yyyy'. Date's #printOn:format: expects a different parameter, which seems really convoluted. [1] And because I'll convert back and forth from/to String I'd like to know if there is a parser (other than DateParser). Thank you! Esteban A. Maringolo [1] compared with popular casting/formatting functions found in other languages/dialects

Sept. 2, 2014

Re: [Pharo-users] [Article] Reddit.st - In 10 Cool Pharo Classes

by Sven Van Caekenberghe

On 02 Sep 2014, at 18:54, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > jfabry wrote >> the tutorials are missing the basic explanation of the use of workspaces >> and browsers, and I donât know where to get some documentation that treats >> just that. Any pointers to that kind of material? > > PBE? Yes, I would say so too, chapters 1 - 5 of http://kilon.gitbooks.io/pbe/ should be more up to date.

Sept. 2, 2014

[ANN] Pointer Detective

by Ben Coman

greetings all, I had an itch to scratch... I find it difficult using the tree list of the standard Pointer Explorer to track down why objects aren't garbage collected. I always fear I'm not going to notice getting caught in a reference loop. So I created a tool presenting an alternative view as a directed graph. The graph incrementally builds out from the target object as you explore it. Nodes are colourised to help manage complexity. The attached snapshot is produced from evaluating the following Workspace script... testObject := 'END5'. ref1 := { testObject. nil }. ref2 := { ref1 }. ref3 := PDTestResource new heldObject: ref2. ref1 at: 2 put: ref3. "note the reference loop this creates" PointerDetective openOn: testObject. Now I expect I'm duplicating something done before, but I couldn't find anything quickly and it was an opportunity for some goal direct learning of Morphic. Thanks to Roassal an option for a spring-force layout is provided. That code was copied rather than create a dependency, and might need to be rationalized later. The code is a bit rough from hacking around learning how to make things work, but its functional, so its time to get it out in the open. For more information please refer to the repository home page... http://smalltalkhub.com/#!/~BenComan/PointerDetective cheers -ben

Sept. 2, 2014

Re: [Pharo-users] Tide installation

by Tim Mackinnon

You also know about the <action> and <state> pragmaâs as well right? They were explained in the Esug session, and show up in the Counter code. Tim On 2 Sep 2014, at 18:03, Bernat Romagosa <tibabenfortlapalanca(a)gmail.com> wrote: > Thanks Tim, I'll take a look at it. Unfortunately I couldn't attend this year :( > > In the meantime I've just found out where the counter entry point is defined: > > TDDispatcher >> setupDefault > default := self new. > default > registerHandler: ((TDFileHandler path: 'tide') > directoryPath: '.'; > yourself); > registerHandler: ((TDPresenterHandler path: 'counter') > rootPresenterClass: TDCounter; > yourself) > > Nice! > > > 2014-09-02 18:57 GMT+02:00 Tim Mackinnon <tim(a)testit.works>: > You can try watching the ESUG video from this year on: http://goo.gl/E1VF53 > > The presentation that Esteban gave was great - and it also inspired me to look at this some more too. > > Tim > > On 2 Sep 2014, at 17:46, Bernat Romagosa <tibabenfortlapalanca(a)gmail.com> wrote: > >> Hey, it looks really nice. Is there any documentation around? Any getting started tutorial or bigger project I can take a look at? >> >> I don't exactly get how proxying works. I inspected the TDCounter instance in Pharo and I see it's persisting its value, but I don't get how's the widget getting to it: >> >> TDClientProxy on: '/counter' >> >> Is '/counter' an entry point? If so, where is it defined? I can't find it anywhere. >> >> >> >> >> 2014-09-02 18:27 GMT+02:00 Bernat Romagosa <tibabenfortlapalanca(a)gmail.com>: >> My bad! Forget my previous email! >> >> Sorry. >> >> >> 2014-09-02 18:16 GMT+02:00 Bernat Romagosa <tibabenfortlapalanca(a)gmail.com>: >> >> Hola Esteban! >> >> Thanks, but it's still failing (although it progressed a little bit further): >> >> bower amber#0efe3ad09 not-cached git://github.com/amber-smalltalk/amber.git#0efe3ad09 >> bower amber#0efe3ad09 resolve git://github.com/amber-smalltalk/amber.git#0efe3ad09 >> bower amber#0efe3ad09 short-sha Consider using longer commit SHA to avoid conflicts >> bower amber#0efe3ad09 checkout 0efe3ad09 >> bower amber#0efe3ad09 resolved git://github.com/amber-smalltalk/amber.git#0efe3ad09 >> bower jquery-tabby#* cached git://github.com/alanhogan/Tabby.git#925c5a416a >> bower jquery-tabby#* validate 925c5a416a against git://github.com/alanhogan/Tabby.git#* >> bower jquery#~1.10.2 cached git://github.com/jquery/jquery.git#1.10.2 >> bower jquery#~1.10.2 validate 1.10.2 against git://github.com/jquery/jquery.git#~1.10.2 >> bower showdown#~0.3.1 cached git://github.com/coreyti/showdown.git#0.3.1 >> bower showdown#~0.3.1 validate 0.3.1 against git://github.com/coreyti/showdown.git#~0.3.1 >> bower es5-shim#~3.3.0 cached git://github.com/es-shims/es5-shim.git#3.3.2 >> bower es5-shim#~3.3.0 validate 3.3.2 against git://github.com/es-shims/es5-shim.git#~3.3.0 >> bower codemirror#~3.24.0 cached git://github.com/marijnh/CodeMirror.git#3.24.0 >> bower codemirror#~3.24.0 validate 3.24.0 against git://github.com/marijnh/CodeMirror.git#~3.24.0 >> bower bootstrap#~2.3.2 cached git://github.com/alonisser/bower-bootstrap-2.3.2-legacy.git#2.3.2 >> bower bootstrap#~2.3.2 validate 2.3.2 against git://github.com/alonisser/bower-bootstrap-2.3.2-legacy.git#~2.3.2 >> bower jquery-ui#~1.10.3 cached git://github.com/components/jqueryui.git#1.10.4 >> bower jquery-ui#~1.10.3 validate 1.10.4 against git://github.com/components/jqueryui.git#~1.10.3 >> bower require-css#~0.1.2 cached git://github.com/guybedford/require-css.git#0.1.4 >> bower require-css#~0.1.2 validate 0.1.4 against git://github.com/guybedford/require-css.git#~0.1.2 >> bower jquery-ui#~1.10.3 new version for git://github.com/components/jqueryui.git#~1.10.3 >> bower jquery-ui#~1.10.3 resolve git://github.com/components/jqueryui.git#~1.10.3 >> bower jquery-ui#~1.10.3 download https://github.com/components/jqueryui/archive/1.10.4.tar.gz >> bower require-css#~0.1.2 new version for git://github.com/guybedford/require-css.git#~0.1.2 >> bower require-css#~0.1.2 resolve git://github.com/guybedford/require-css.git#~0.1.2 >> bower require-css#~0.1.2 download https://github.com/guybedford/require-css/archive/0.1.5.tar.gz >> bower jquery#>=1.8.0 <2.1.0 cached git://github.com/jquery/jquery.git#2.0.3 >> bower jquery#>=1.8.0 <2.1.0 validate 2.0.3 against git://github.com/jquery/jquery.git#>=1.8.0 <2.1.0 >> bower require-css#~0.1.2 extract archive.tar.gz >> bower require-css#~0.1.2 resolved git://github.com/guybedford/require-css.git#0.1.5 >> bower jquery-ui#~1.10.3 extract archive.tar.gz >> bower jquery-ui#~1.10.3 invalid-meta jquery-ui is missing "ignore" entry in bower.json >> bower jquery-ui#~1.10.3 resolved git://github.com/components/jqueryui.git#1.10.4 >> bower EACCES EACCES, mkdir '/home/nabax/myproject/github-cache/tide-framework/tide/master/tide-framework-tide-252a3d8/bower_components' >> Stack trace: >> Error: EACCES, mkdir '/home/nabax/myproject/github-cache/tide-framework/tide/master/tide-framework-tide-252a3d8/bower_components' >> Console trace: >> Trace >> at StandardRenderer.error (/usr/local/lib/node_modules/bower/lib/renderers/StandardRenderer.js:72:17) >> at Logger.<anonymous> (/usr/local/lib/node_modules/bower/bin/bower:110:22) >> >> at Logger.EventEmitter.emit (events.js:95:17) >> at Logger.emit (/usr/local/lib/node_modules/bower/node_modules/bower-logger/lib/Logger.js:29:39) >> at /usr/local/lib/node_modules/bower/lib/commands/index.js:40:20 >> at _rejected (/usr/local/lib/node_modules/bower/node_modules/q/q.js:797:24) >> at /usr/local/lib/node_modules/bower/node_modules/q/q.js:823:30 >> at Promise.when (/usr/local/lib/node_modules/bower/node_modules/q/q.js:1035:31) >> at Promise.promise.promiseDispatch (/usr/local/lib/node_modules/bower/node_modules/q/q.js:741:41) >> at /usr/local/lib/node_modules/bower/node_modules/q/q.js:557:44 >> System info: >> Bower version: 1.3.9 >> >> Node version: 0.10.25 >> OS: Linux 3.11.0-19-generic x64 >> >> Should I add jquery-ui to the ignore array in bower.json? >> >> >> >> 2014-09-02 17:15 GMT+02:00 Esteban Lorenzano <estebanlm(a)gmail.com>: >> >> yeah, doc is badâ¦ you need to install the newest bower, not the version specifies there. >> >> cheers, >> Esteban >> >> On 02 Sep 2014, at 17:05, Bernat Romagosa <tibabenfortlapalanca(a)gmail.com> wrote: >> >>> Hi list! >>> >>> I wanted to try out Tide, and I'm following the steps at: https://github.com/tide-framework/tide >>> >>> However, I can't get through the bower install step. Here's the output: >>> >>> >>> bower amber#0efe3ad09 not-cached git://github.com/amber-smalltalk/amber.git#0efe3ad09 >>> bower amber#0efe3ad09 resolve git://github.com/amber-smalltalk/amber.git#0efe3ad09 >>> bower amber#0efe3ad09 ENORESTARGET Tag/branch 0efe3ad09 does not exist >>> Additional error details: >>> Available tags: 0.10, 0.10.0, 0.11.0, 0.12.0, 0.12.1, 0.12.2, 0.12.3, 0.12.4, 0.12.6, 0.13.0-alpha.1, 0.13.0-alpha.2, 0.9, 0.9.1, legacy, legacy2, legacy3-iife >>> Available branches: 0.13-prereleases, camillo-hacks, chromeos, gh-pages, master, moka, nemo, nw-helios-app, stable, website-deployment >>> >>> >>> I changed 0efe3ad09 for stable in bower.json and it failed with: >>> >>> >>> bower amber#stable not-cached git://github.com/amber-smalltalk/amber.git#stable >>> bower amber#stable resolve git://github.com/amber-smalltalk/amber.git#stable >>> bower amber#stable checkout stable >>> bower amber#stable error Arguments to path.join must be strings >>> Stack trace: >>> TypeError: Arguments to path.join must be strings >>> at path.js:360:15 >>> at Array.filter (native) >>> at Object.exports.join (path.js:358:36) >>> at GitHubResolver.GitResolver._cleanup (/usr/local/lib/node_modules/bower/lib/core/resolvers/GitResolver.js:182:26) >>> at /usr/local/lib/node_modules/bower/lib/core/resolvers/GitResolver.js:74:25 >>> at Promise.apply (/usr/local/lib/node_modules/bower/node_modules/q/q.js:1122:26) >>> at Promise.promise.promiseDispatch (/usr/local/lib/node_modules/bower/node_modules/q/q.js:752:41) >>> at /usr/local/lib/node_modules/bower/node_modules/q/q.js:1337:14 >>> at flush (/usr/local/lib/node_modules/bower/node_modules/q/q.js:108:17) >>> at process._tickCallback (node.js:415:13) >>> Console trace: >>> Trace >>> at StandardRenderer.error (/usr/local/lib/node_modules/bower/lib/renderers/StandardRenderer.js:74:17) >>> at Logger.updateNotifier.packageName (/usr/local/lib/node_modules/bower/bin/bower:109:18) >>> at Logger.EventEmitter.emit (events.js:95:17) >>> at Logger.emit (/usr/local/lib/node_modules/bower/node_modules/bower-logger/lib/Logger.js:29:39) >>> at /usr/local/lib/node_modules/bower/lib/commands/install.js:28:16 >>> at _rejected (/usr/local/lib/node_modules/bower/node_modules/q/q.js:808:24) >>> at /usr/local/lib/node_modules/bower/node_modules/q/q.js:834:30 >>> at Promise.when (/usr/local/lib/node_modules/bower/node_modules/q/q.js:1079:31) >>> at Promise.promise.promiseDispatch (/usr/local/lib/node_modules/bower/node_modules/q/q.js:752:41) >>> at /usr/local/lib/node_modules/bower/node_modules/q/q.js:574:44 >>> System info: >>> Bower version: 1.2.6 >>> Node version: 0.10.25 >>> OS: Linux 3.11.0-19-generic x64 >>> >>> I'm kind of stuck, any tips? >>> >>> Thanks! >>> >>> Bernat. >>> >>> >>> -- >>> Bernat Romagosa. >> >> >> >> >> -- >> Bernat Romagosa. >> >> >> >> -- >> Bernat Romagosa. >> >> >> >> -- >> Bernat Romagosa. > > > > > -- > Bernat Romagosa.

Sept. 2, 2014