- Pharo-users - lists.pharo.org

Use antlr ".g4" grammars-v4 files to generate parser in pharo?
by Julien Delplanque May 3, 2015

May 3, 2015

Hi everyone, I saw on this repository https://github.com/antlr/grammars-v4 that there are a lot of grammar defined. I wonder if someone already managed to generate a parser in pharo (using any framework you want) from a ".g4" file? I also saw there is the grammar of ".g4" files (https://github.com/antlr/grammars-v4/tree/master/antlr4) in the repository so I guess it would be possible to create a parser that generate parsers from ".g4" files. Regards, Julien

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Can we have NeoCSV, and NeoJSON included in the base image?
by Andy Burnett May 2, 2015

May 2, 2015

I would find it really useful to have some more classes included in the base image. The Neo system would be particularly useful, but I would also find an XML reader valuable. What is the process for deciding which classes get included by default? Cheers Andy

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builder pattern
by Peter UhnÃ¡k May 2, 2015

May 2, 2015

Is there some common / best way for coding builders? Two ways that I see are: a) using a block - I've seen this in menus and some other, however in my case I need to add an extra parameter as label "variant with two params" aForm addDropList: 'Type' with: [ :dropList | dropList items: #(input #output); " ... ". ]. "variant with one method param and value holder" aForm addDropList: [ :labelHolder :dropList | labelHolder value: 'Type'. dropList items: #(input #output); " ... ". ]. b) using return value - no blocks, no extra code (aForm addDropList: 'Type') items: #(input #output); " ... ". I would use the second variant as it looks much cleaner, however considering how widespread is the use of the first variant I think I must be missing something. Thanks, Peter

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ZnEasy / UTF-8
by volkert May 2, 2015

May 2, 2015

Dear all, i am trying to get a JSON Document with ZnEasy. The Document is UTF-8 encoded. (ZnEasy get: 'http://<removed>/api/atm/801813') entity string. Any hints? Volkert

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partitions?
by stepharo May 2, 2015

May 2, 2015

Hi I'm looking for a method that given #(1 2 3) returns #( #(1) #(2) #(3) #(1 2) #(2 3) #(1 3) #( 1 2 3)) Stef

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When to use Versionner and when to use Monticello
by Sergio Fedi May 2, 2015

May 2, 2015

Great, now that I saw these screencasts of Versionner (which I'm still trying to have a hang on) I would like to ask: When do we use Versionner and when do we use Monticello? Putting it in another way: What tasks are only possible through Monticello? What tasks you should be doing in Versionner?

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inverting colors of athens(cairo)canvas
by Peter UhnÃ¡k May 1, 2015

May 1, 2015

Is it possible to invert the colors of a Athens Canvas? After some digging I found paintMode and paintTransform; however the former doesn't support such method (maybe some combination of xor and over?); and the former is only for some specific colors. I also tried changing Color>>asAthensPaintOn: ^ (Color white - self) alpha: (self alpha) "invert the color" and while this works nicely for most cases, it is overriding a library and _doesn't_ work for bitmaps (for obvious reasons). So is there some way how to invert it? Effectively a mask over the canvas. (Doing it at Morphic level should also be a viable option, provided it is possible there). Thanks, Peter

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Question about Text Editor.
by Cyril Ferlicot May 1, 2015

May 1, 2015

Hi, I wanted to do a little text editor and I would like to know if someone already did one with simple features like open a file, save a file etc... I don't want to lose too much time in something that already exist. -- Cheers Cyril Ferlicot

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Citizen example for manipulating a bibtex file
by Offray Vladimir Luna CÃ¡rdenas May 1, 2015

May 1, 2015

Hi, I'm using a Zotero collection for keeping track of several references I have found for my article about the experience of the outline/tree-like metaphor for writing inside Pharo (as soon as I have a presentable working draft I hope to share it with you). Now I want to make a post-processing of the bibtex file exported from Zotero. The idea is to use "shorttitle" field instead to replace the Zotero auto-generated one and have custom keys. So for example instead of: ======= @misc{_holistic_????, title = {Holistic software assessment (Uni Zurich - 2011) on Vimeo}, shorttitle = {Girba-holistic-2011}, url = {http://vimeo.com/42073344?from=outro-local}, urldate = {2014-08-19}, note = {00000} } ======= I would like to have: ======= @misc{Girba-holistic-2011, title = {Holistic software assessment (Uni Zurich - 2011) on Vimeo}, shorttitle = {Girba-holistic-2011}, url = {http://vimeo.com/42073344?from=outro-local}, urldate = {2014-08-19}, note = {00000} } ======= I have already installed Citizen and open it on the browser to see the code, but I can find any place to start with examples. Any advice on how to solve this issue will be appreciated. Cheers, Offray

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RPackage extension methods using normal protocol names
by Ben Coman May 1, 2015

May 1, 2015

I saw recently how VisualWorks extensions use normal protocol names http://ia902605.us.archive.org/25/items/St4u181ClassExtensionsInVisualworks… Now that Pharo has got real package objects with RPackage, how possible is the VW convention? It would facilitate porting code. cheers -ben

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