Pharo on iPad. http://youtu.be/7MNsUiCc5FQ Le 10 déc. 2014 21:26, "dboeren" <boer...@gmail.com> a écrit :
> Now that my image is working properly again and the fires have been put > out, > I wanted to introduce myself a bit better... > > My name is David Boeren. I first learned Smalltalk back in college many > years ago, we used Smalltalk V in an object oriented programming class I > took which was first-half Smalltalk, second-half C++. This would be about > 1992 I think? In recent years I've mainly been using Java, with occasional > Python dabblings. I remember installing Squeak once or twice over the > years, but to be honest it felt a bit clunky, perhaps this was just an > early > primitive version or whatever. > > Recently, I've been getting the itch to try out some different languages. > I > was kind of looking at Scala or Clojure, one co-worker suggested Erlang, > and > so forth. But after doing a brief review I ended up coming back to > Smalltalk which even after all these years still stands right up with the > cutting edge I think. Sure, there are a few things that I think would be a > little different if it were designed today like tuple support or whatever, > but it feels like the right choice for something I'm going to use mainly > for > "fun" projects and the interactive environment is awesome. > > > One thing I wanted to ask about is the status of getting Pharo running on > iOS (or at least iPad). I found some old posts but nothing much within the > last couple of years. I know there were app store policy issues in the > past > but I think that Apple has opened things up a bit since then, you can now > get Pythonista in the app store, or Codea. Is there still an obstacle or > is > it just something that hasn't been gotten around to yet? I'd love to get > it > running on my iPad Mini and be able to transmit code back and forth between > there and my laptop to work on it wherever I'm at. > > > Second, I'm running into an oddity and I'm not sure what I'm doing wrong or > whether this is a bug of some sort, this has to do with trying to replace > unicode characters in a string which seems like it should be a > straightforward operation. Here is my code: > > "Fetch the raw JSON data from dtdb.co" > response := 'http://dtdb.co/api/cards/' asUrl retrieveContents > asString. > > "Clean up the data a bit to make it a little more regular" > response := response copyReplaceAll: 'null' with: '""'. > response := response copyReplaceAll: '\u2022' with: ','. > response := response copyReplaceAll: '\u009e' with: 'e'. > > Basically I'm just pulling some JSON data and then doing a few string > replacements to make the data suit my needs. The first one works. The > second one works. Since the third one ALSO uses a \uXXXX code I would > expect it to work too, but it does not - the accented characters are still > there. > > To get a bit more visibility into this, I copied the CopyReplaceAll code > from SequenceableCollection into a scratch class method and adding some > Transcript output: > > copyReplaceIn: aString All: oldSubCollection with: newCollection > "Answer a copy of the receiver in which all occurrences of > oldSubCollection have been replaced by newCollection " > > | startSearch currentIndex endIndex | > > Transcript show: 'start' ; cr. > startSearch := 1. > [(currentIndex := aString indexOfSubCollection: oldSubCollection > startingAt: startSearch) > 0] > whileTrue: [ > Transcript show: 'Found at index ' ; show: > currentIndex ; cr. > endIndex := currentIndex + oldSubCollection size - > 1. > aString := aString > copyReplaceFrom: currentIndex > to: endIndex > with: newCollection. > startSearch := currentIndex + > newCollection size]. > Transcript show: 'done' ; cr. > ^ aString > > A minimal test seemed to work: > HelloWorld copyReplaceIn: 'R\u00e9my Lapointe' All: '\u00e9' with: 'e'. > > start > Found at index 2 > done > > Testing this with the real data worked too: > HelloWorld copyReplaceIn: ('http://dtdb.co/api/cards/' asUrl > retrieveContents asString) All: '\u00e9' with: 'e'. > start > Found at index 22379 > Found at index 22500 > done > > > However, when I went back to using the regular copyReplaceAll:With: method > it does not work and I'm not sure why. When it executes this: > aString indexOfSubCollection: oldSubCollection startingAt: startSearch > > The value comes back as 0 even though it's the same data from > 'http://dtdb.co/api/cards/' asUrl retrieveContents asString (I added a > "self > halt" to be able to step into the method and view the variable values), and > I'm not sure what the difference is. There shouldn't be a limit on the > size > of the collection, should there? The whole thing is around 116k which is > big but not ridiculously so. It is however big enough that the debugger > can't show the whole value, or at least I haven't found a way to do so. > > > And last, is there a good video tutorial for the Pharo beginner on how to > use the various browsers, debugger, tools, etc... that come with Pharo? I > would like to start learning more about the best ways to use these in my > development processes. I'm also having a lot of trouble finding the > correct > classes and message for what I want to do, searching online w/ Google often > seem to turn up outdated information (or for a different smalltalk flavor) > and it can take a while to figure out the correct way to do things. Is > there a good central reference for the APIs somewhere? I know that you can > search in the browser but I usually don't know the name to search for. It > would be good to have a handy reference detailing how to do all the > commonplace stuff. > > Thanks! > > > > -- > View this message in context: > http://forum.world.st/New-Pharo-user-some-questions-tp4795325.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > >
