June 2012 - Pharo-users - lists.pharo.org

[ANN] NeoCSV
by Sven Van Caekenberghe June 26, 2012

June 26, 2012

CSV (Comma Separated Values) and more generally other delimiter-separated-value formats like TSV are probably the most common data exchange format. A number of implementations of this simple format already exist. NeoCSV is a more flexible and more efficient reader and writer for this format. You can find it in http://mc.stfx.eu/Neo ConfigurationOfNeoCSV is also available from http://www.squeaksource.com/MetacelloRepository http://squeaksource.com/MetaRepoForPharo14 http://ss3.gemstone.com/ss/MetaRepoForPharo20 Documentation can be found here https://github.com/svenvc/docs/blob/master/neo/neo-csv-paper.md Feedback and users are welcome. Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

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How to file out all code in a MC package?
by Henrik HÃ¸yer June 26, 2012

June 26, 2012

I am currently trying to port some code from Pharo to Visual Smalltalk Enterprise (yes, I know VSE is very old, but nevertheless still used by some people). Since VSE don't support Metacello, I am trying to load the code in Pharo, and use Fileout. The SystemBrowser support Fileout on package, class and method, but how can I find (and fileout) all loose/extension methods in an MC package? [sPeople Logo]<http://www.sPeople.dk> Henrik HÃ¸yer Chief Software Architect hh(a)sPeople.dk<mailto:[e-mail]> * (+45) 4029 2092 Tigervej 27 * 4600 KÃ¸ge www.sPeople.dk<http://www.sPeople.dk> * (+45) 7023 7775

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"Objects pointing to this value" and "Explore pointers"
by Davide Varvello June 25, 2012

June 25, 2012

Hello there, I'm puzzled about those 2 items in inspector's menu and I've a couple of questions: 1) What's the difference between them? It seems to me the meaning is quite similar. 2) Every time I click on "Objects pointing to this value" nothing happens, is it right? I'm on Pharo 1.4 3) Is there any documentation or example that explains how to use them? If not can it be added on Pharo book? Cheers Davide -- View this message in context: http://forum.world.st/Objects-pointing-to-this-value-and-Explore-pointers-t… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Evaluating Nautilus
by HernÃ¡n Morales Durand June 25, 2012

June 25, 2012

First let me apologize for asking without properly evaluating first. I took some time and read about Nautilus which it seems a very nice work. I've developed a phylogenetics classifier using OmniBrowser, but I wondered if Nautilus could save me some effort, and I'm planning to test Pharo 1.4 or 2.0 in some future in which AFAIK OmniBrowser will not be supported anymore. - Some time ago I've modified the OmniBrowser framework to browse anything I wanted in the "code pane" (the lower pane typically used for displaying/editing code), as we had a complex OODB it was very useful, see http://www.youtube.com/watch?v=VxUaOFRHFPk for a demo. However it was not easy to understand the OB internals and make the modifications. Have you tried to implement such feature in Nautilus? - There is documentation for developing browsers with Nautilus? Something which explains the basic architecture, how it differs from OB? for example: --Do you have to define a metagraph? --May I have multiple definition panels? -Do you have a mapping for each node type (class?) with each column? -OB is not cross-UI (it depends on Morphic). Can I use a Nautilus browser within a web browser? - Another thing which is really easy is to define Commands in OB, (although the #isActive logic could become a mess without some care). How it is different in Nautilus? I'm sure I would rewrite my browsers with Nautilus, my key question is how much of the OB knowledge I can re-use? Cheers, HernÃ¡n -- HernÃ¡n Morales Institute of Veterinary Genetics. National Scientific and Technical Research Council (CONICET). La Plata (1900), Buenos Aires, Argentina. Telephone: +54 (0221) 421-1799. Internal: 422 Fax: 425-7980 or 421-1799.

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FileSystemWriteStream>>next??
by Bernardo Ezequiel Contreras June 24, 2012

June 24, 2012

Hi all, Anybody knows why the FileSystemWriteStream doesn't implement the message next? Thanks. -- Bernardo E.C.

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app to move to Pharo
by Robert Shiplett June 24, 2012

June 24, 2012

This is the app that I will move to Pharo: http://passphrases.aule-browser.com/ Each 'word' rectangle at present is a rotate-enabled 3-D graphic object - next iteration each will be created by shape paths seq ( curl.com Curl language ) The 3-d is just to make fun when left open on desktop without a 'shuffle along' Robert

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[ANN] ZTimestamp
by Sven Van Caekenberghe June 24, 2012

June 24, 2012

We have DateAndTime and TimeStamp, which are generally useful objects with lots of features. But for a lot of applications, they are too heavy. In server side code, timestamps are almost always in UTC (timezone zero). In most cases, nanosecond or millisecond precision are not (really) needed. Unix/Posix time has only second precision. I wrote ZTimestamp as an alternative for DateAndTime and TimeStamp. It has second precision and lives in the UTC/GMT/Zulu timezone. It uses ISO/International conventions and protocols only. ZTimestamp is more efficient: it uses half the memory of DateAndTime and is faster. You can find it in http://mc.stfx.eu/Neo ConfigurationOfZTimestamp is also available from http://www.squeaksource.com/MetacelloRepository http://squeaksource.com/MetaRepoForPharo14 http://ss3.gemstone.com/ss/MetaRepoForPharo20 Here are some benchmarks: [ 1000 timesRepeat: [ ZTimestamp now ] ] bench '1,910 per second.' [ 1000 timesRepeat: [ DateAndTime now ] ] bench '253 per second.' [ 1000 timesRepeat: [ ZTimestamp fromString: '2012-06-18T07:51:40Z' ] ] bench '161 per second.' [ 1000 timesRepeat: [ DateAndTime fromString: '2012-06-18T07:51:40Z' ] ] bench '44.9 per second.' [ 1000 timesRepeat: [ ZTimestamp now printString ] ] bench '212 per second.' [ 1000 timesRepeat: [ DateAndTime now printString ] ] bench '82.3 per second.' [ 1000 timesRepeat: [ TimeStamp now printString ] ] bench '54.2 per second.' [ 1000 timesRepeat: [ (ZTimestamp fromUnixTime: 1340006939) = (ZTimestamp fromUnixTime: 2540006939) ] ] bench '377 per second.' [ 1000 timesRepeat: [ (DateAndTime fromUnixTime: 1340006939) = (DateAndTime fromUnixTime: 2540006939) ] ] bench '142 per second.' [ 1000 timesRepeat: [ (ZTimestamp fromUnixTime: 1340006939) < (ZTimestamp fromUnixTime: 2540006939) ] ] bench '376 per second.' [ 1000 timesRepeat: [ (DateAndTime fromUnixTime: 1340006939) < (DateAndTime fromUnixTime: 2540006939) ] ] bench '134 per second.' [ 1000 timesRepeat: [ (ZTimestamp fromUnixTime: 1340006939) + 10 days ] ] bench '604 per second.' [ 1000 timesRepeat: [ (DateAndTime fromUnixTime: 1340006939) + 10 days ] ] bench '142 per second.' [ 1000 timesRepeat: [ (ZTimestamp fromUnixTime: 1340006939) - (ZTimestamp fromUnixTime: 2540006939) ] ] bench '239 per second.' [ 1000 timesRepeat: [ (DateAndTime fromUnixTime: 1340006939) - (DateAndTime fromUnixTime: 2540006939) ] ] bench '98.8 per second.' [ 1000 timesRepeat: [ (ZTimestamp year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) = (ZTimestamp year: 2011 month: 5 day: 2 hour: 4 minute: 4 second: 4) ] ] bench '2,040 per second.' [ 1000 timesRepeat: [ (DateAndTime year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) = (DateAndTime year: 2011 month: 5 day: 2 hour: 4 minute: 4 second: 4) ] ] bench '1,800 per second.' [ 1000 timesRepeat: [ (ZTimestamp year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) < (ZTimestamp year: 2011 month: 5 day: 2 hour: 4 minute: 4 second: 4) ] ] bench '2,220 per second.' [ 1000 timesRepeat: [ (DateAndTime year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) < (DateAndTime year: 2011 month: 5 day: 2 hour: 4 minute: 4 second: 4) ] ] bench '1,050 per second.' [ 1000 timesRepeat: [ (ZTimestamp year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) + 10 days ] ] bench '1,970 per second.' [ 1000 timesRepeat: [ (DateAndTime year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) + 10 days ] ] bench '245 per second.' [ 1000 timesRepeat: [ (ZTimestamp year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) - (ZTimestamp year: 2011 month: 5 day: 2 hour: 4 minute: 4 second: 4) ] ] bench '1,440 per second.' [ 1000 timesRepeat: [ (DateAndTime year: 2012 month: 7 day: 1 hour: 8 minute: 8 second: 8) - (DateAndTime year: 2011 month: 5 day: 2 hour: 4 minute: 4 second: 4) ] ] bench '767 per second.' ZTimestamp is *not* meant as a general replacement for DateAndTime or TimeStamp. But in a lot of cases, it can be more efficient. Feedback and users are welcome. Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

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Versionner a GUI for metacello
by Juan Pablo Sandoval Alcocer June 23, 2012

June 23, 2012

Hi all, I would like present you ``Versionner''. Versionner is a GUI for metacello. It supports a simple working style, providing a basic UI set to handle versions: (i)create a configuration (ii) update an application (iii) commit and save all the packages of an application (iv) load an application from a repository. The goal of Versionner, is to not write a metacello version by hand again. Saving and committing all your monticello package, and creating a new metacello version is a one click operation. You can find more about Versionner here: http://www.dcc.uchile.cl/~jsandova/ versionner. Including the install instructions and screenshots. Regards, Juan Pablo

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Where are our ancestors buried?
by Sean P. DeNigris June 23, 2012

June 23, 2012

I want to view changes between Announcements-Core-StephaneDucasse.31 (the current version) and Announcements-Core-MarcusDenker.30 The current version is in http://ss3.gemstone.com/ss/Pharo20, but where is Announcements-Core-MarcusDenker.30? Thanks, Sean -- View this message in context: http://forum.world.st/Where-are-our-ancestors-buried-tp4636205.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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[ANN] NeoJSON
by Sven Van Caekenberghe June 23, 2012

June 23, 2012

JSON (JavaScript Object Notation) is a popular data-interchange format. A number of implementations of this simple format already exist. NeoJSON is a more flexible and more efficient reader and writer for this format. You can find it in http://mc.stfx.eu/Neo ConfigurationOfNeoJSON is also available from http://www.squeaksource.com/MetacelloRepository http://squeaksource.com/MetaRepoForPharo14 http://ss3.gemstone.com/ss/MetaRepoForPharo20 Documentation can be found here https://github.com/svenvc/docs/blob/master/neo/neo-json-paper.md Feedback and users are welcome. Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

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