October 2010 - MacRuby-devel - lists.macosforge.org

MacRuby solutions to the exercises in Aaron Hillegass's "Cocoa Programming for Mac OS X, 3rd edition"
by Caio Chassot 11 Oct '10

11 Oct '10

I wrote these today: http://github.com/kch/macruby-programming-cocoa I strived for very idiomatic ruby. This code is 100% Objective-C-isms-free. • Each exercise has its own branch • Each commit in the branch is one completed stage in the book • Each commit message mentions the chapter for the project at that stage • Each commit message is also annotated with the path to the roughly equivalent Cocoa solution in Hillegass's tarball This is incomplete. I went up to chapter 9. I don't know when / if I'll do the rest. In addition to the exercises, a few challenges are done too.

1 1

Method calls with variable unnamed arguments after the pseudo-hash part of the selector
by Caio Chassot 10 Oct '10

10 Oct '10

I'm playing again with implementing the Hillegass book in MacRuby, and ran across this method: + (NSAlert *)alertWithMessageText:(NSString *)messageTitle defaultButton:(NSString *)defaultButtonTitle alternateButton:(NSString *)alternateButtonTitle otherButton:(NSString *)otherButtonTitle informativeTextWithFormat:(NSString *)informativeText, ... (http://bit.ly/d1JIeQ) Now, the interesting part here is the ", ..." at the end. It takes variable arguments at the end that work as formatting arguments for informativeText, eg. sprintf(informativeText, ...). In MacRuby, this is invalid syntax: NSAlert.alertWithMessageText("Delete?", defaultButton:"Delete", alternateButton:"Cancel", otherButton:nil, informativeTextWithFormat:"delete %d people?", employees.count) Surely, in this case it can be worked around with: NSAlert.alertWithMessageText("Delete?", defaultButton:"Delete", alternateButton:"Cancel", otherButton:nil, informativeTextWithFormat:"delete #{employees.count} people?") And I can also call it as: NSAlert.send( :"alertWithMessageText:defaultButton:alternateButton:otherButton:informativeTextWithFormat:", "Delete?", "Delete", "Cancel", nil, "delete %@ people?", employees.count) but I was wondering if this is a known limitation in MacRuby's method call syntax. So, is it known? Is there a plan to do anything about it?

3 4

Objective-C class +initialize in MacRuby
by Caio Chassot 10 Oct '10

10 Oct '10

Hi, It looks like self.initialize is a no-go: class Foo def self.initialize NSLog("self.initialize is a saaaad panda") # <- never runs end end The ruby idiom for that would be just: class Foo NSLog("IM IN UR CLASS INITIALIZEEN FROM RUBY") end is that ok in the context of Cocoa applications? Is there a better way?

3 4

Editing MacRuby's website
by Caio Chassot 10 Oct '10

10 Oct '10

Hi, Is the MacRuby website on a public repo? I'm seeing a lot of pages still say "Current Version: 0.6". Other than that there's a bunch of outdated info. It would be great if the site were on, say, github, so everyone could submit fixes. Is it available anywhere?

2 2

Tutorial for the new Sandbox class.
by Rob Gleeson 09 Oct '10

09 Oct '10

I wrote a short tutorial I'd like to share with everybody about the new Sandbox class introduced in the new 0.7 release of MacRuby. I tried to focus on using the class inside MacRuby as much as possible. Please let me know what you think, spot errors, etc! Link: http://robgleeson.github.com/documents/macruby-sandbox-class/ … Rob

4 12

Handling Of Instance Variables In MacRuby
by Jeff Hemmelgarn 09 Oct '10

09 Oct '10

I have been looking into ticket 203 - Marshal.dump does not serialize an Exception's backtrace. It looks like the first reason is that dump is not currently exporting instance variables. Digging deeper, I found that MacRuby is not currently using the ID_INSTANCE tag for identifying instance variables. It doesn't look like instance variables are being identified as separate from other types right now. I am not sure which way to go from here. What are the plans for supporting instance variables? I would be happy to work on getting that support in if I had some direction. I am planning on working on the tickets and TODOs in the Marshal module and working out from there as I learn more about the MacRuby codebase and ObjectiveC/LLVM in general. So, this would be a good opportunity to delve deeper. Thanks! Jeff

1 0

URI and NSURL compatibility
by Mark Rada 08 Oct '10

08 Oct '10

Hi devs, I am trying to write a gem so that it will run on MRI and MacRuby, but still be able to take advantage of MacRuby things like Cocoa and GCD. I was playing around with some URI related stuff and I cannot find much documentation on whether NSURL and URI objects have been bridged for MacRuby? If they aren't bridged, I was thinking I could just hack together an empty class that just chooses if it inherits from NSURL or URI at run time. Something like this: require 'uri' class HackURI def initialize(uri) if RUBY_ENGINE == 'macruby' @url = NSURL.URLWithString uri else @url = URI.parse uri end end def method_missing(method, *args) @url.send(method, *args) end end -- Mark Rada

3 3

control tower with objective-c class
by Louis-Philippe 06 Oct '10

06 Oct '10

Hi all, I'm experimenting with Control Tower and tought I would try to get it running with an Objective-C class, inside an imported framework, implementing the Rack protocol. My class imports right in macruby, has a proper call(env) method which returns an array of 3 elements, when I call inspect on it it is same, same same as the macruby one... but control tower doesn't display my return string??? any idea? L-P

3 4

LLVM Developer Meeting
by Jeff Hemmelgarn 06 Oct '10

06 Oct '10

Hello, Sorry for the possibly off-topic mail. If I should take this elsewhere let me know. I was wondering if any of the MacRuby team were going to attend the LLVM Developer Meeting on Nov. 4? I talked to my boss and I might be able to make it out for the meeting. I am looking at switching out the compiler we are using from straight gcc to something involving LLVM and want to get a feel for what is going on with the ecosystem. It would be nice to meet some of the people behind MacRuby if possible. Also, does anyone know when the registration information will be updated? It is kind of hard to get approval without being able to register. Thanks! Jeff Hemmelgarn

2 1

Re: [MacRuby-devel] MacRuby-devel Digest, Vol 32, Issue 13
by Brad Hutchins 06 Oct '10

06 Oct '10

macirb not working get the same result. localhost:~ Brad$* rvm macruby-0.7* localhost:~ Brad$ *rvm list* rvm rubies jruby-1.5.2 [ x86_64-java ] => macruby-0.7 [ x86_64 ] rbx-1.0.1-20100603 [ x86_64 ] ruby-1.8.7-p302 [ x86_64 ] ruby-1.9.2-p0 [ x86_64 ] localhost:~ Brad$ localhost:~ Brad$ *macgem install awesome_prin*t unknown: warning: ignoring alias Successfully installed awesome_print-0.2.1 1 gem installed localhost:~ Brad$ *macirb* /Users/Brad/.irbrc:1:in `<main>': uninitialized constant IRB::Irb (NameError) from /usr/local/bin/macirb:13:in `block' from /usr/local/bin/macirb:9:in `block' from /usr/local/bin/macirb:3:in `<main>' localhost:~ Brad$ On Wed, Oct 6, 2010 at 1:20 AM, <macruby-devel-request(a)lists.macosforge.org>wrote: > Send MacRuby-devel mailing list submissions to > macruby-devel(a)lists.macosforge.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > or, via email, send a message with subject or body 'help' to > macruby-devel-request(a)lists.macosforge.org > > You can reach the person managing the list at > macruby-devel-owner(a)lists.macosforge.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of MacRuby-devel digest..." > > > Today's Topics: > > 1. Re: [ANN] MacRuby 0.7 (Antony Blakey) > 2. Re: macirb or not working with awesome_print (Joshua Ballanco) > 3. Sequel + SQLite Crash SIGABRT (Mario Steele) > 4. Tutorial for the new Sandbox class. (Rob Gleeson) > 5. Re: Tutorial for the new Sandbox class. (Laurent Sansonetti) > 6. Re: Sequel + SQLite Crash SIGABRT (Laurent Sansonetti) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 6 Oct 2010 16:10:04 +1030 > From: Antony Blakey <antony.blakey(a)gmail.com> > To: "MacRuby development discussions." > <macruby-devel(a)lists.macosforge.org> > Subject: Re: [MacRuby-devel] [ANN] MacRuby 0.7 > Message-ID: <B1A2CF09-DEE9-4BDE-BE7D-00568037CBC8(a)gmail.com> > Content-Type: text/plain; charset=us-ascii > > > On 06/10/2010, at 3:08 PM, russell muetzelfeldt wrote: > > > On 06/10/2010, at 1:00 AM, macruby-devel-request(a)lists.macosforge.orgwrote: > > > >> After 5 months of development since the last release, MacRuby 0.7 is > >> now available. Get it here while it's still hot! > > > > cool! > > > > > > Now that 0.7 is out I've just tried to "macgem install control_tower", > but it's warning me that it'll stomp (at least) on the existing > /usr/bin/rackup from my OSX standard ruby 1.8.7 install. I guess this is > more a RubyGems question, but is there an easy way to specify a different > install directory for gem executables? > > http://rvm.beginrescueend.com/ ? or use bundler from rails (which IIUC is > independent of rails) > > Antony Blakey > ------------- > CTO, Linkuistics Pty Ltd > Ph: 0438 840 787 > > It is no measure of health to be well adjusted to a profoundly sick > society. > -- Jiddu Krishnamurti > > > > > ------------------------------ > > Message: 2 > Date: Tue, 5 Oct 2010 23:38:18 -0700 > From: Joshua Ballanco <joshua.ballanco(a)apple.com> > To: "MacRuby development discussions." > <macruby-devel(a)lists.macosforge.org> > Subject: Re: [MacRuby-devel] macirb or not working with awesome_print > Message-ID: <3B4F47A6-D13C-4817-BA33-493CD23E040A(a)apple.com> > Content-Type: text/plain; charset="us-ascii" > > Hi Brad, > > What's happening here is that the 'gem' command that ships with MacRuby is > named 'macgem'. However, 'macirb' still looks at the same .irbrc file that > the system 'irb' command does. So, if you've put in a require for > awesome_print into your .irbrc, then 'macirb' will look for it but not find > it. > > Try running 'macgem install awesome_print' instead and let us know how it > goes. > > Cheers, > > Josh > > > On Oct 5, 2010, at 10:29 PM, Brad Hutchins wrote: > > > "DietRB" or "macirb" don't seem to be working after I install "gem > awesome_print" > > > > I have to "gem uninstall awesome_print" to get it to work. > > > > I am guessing DietRB may be the name of the IRB but it is still launches > with "macirb" > > > > > > > > localhost:Homebrew Brad$ rvm macruby > > > > > > localhost:Homebrew Brad$ macruby -v > > MacRuby 0.7 (ruby 1.9.2) [universal-darwin10.0, x86_64] > > localhost:Homebrew Brad$ DietRB > > -bash: DietRB: command not found > > > > > > localhost:Homebrew Brad$ macirb > > ap gem not found. Try typing 'gem install awesome_print' to get > super-fancy output. > > irb(main):001:0> exit > > > > localhost:Homebrew Brad$ gem install awesome_print > > unknown: warning: ignoring alias > > Successfully installed awesome_print-0.2.1 > > 1 gem installed > > localhost:Homebrew Brad$ macirb > > /Users/Brad/.irbrc:1:in `<main>': uninitialized constant IRB::Irb > (NameError) > > from /usr/local/bin/macirb:13:in `block' > > from /usr/local/bin/macirb:9:in `block' > > from /usr/local/bin/macirb:3:in `<main>' > > > > > > localhost:Homebrew Brad$ DietRB > > -bash: DietRB: command not found > > > > > > localhost:Homebrew Brad$ rvm list > > > > rvm rubies > > > > jruby-1.5.2 [ x86_64-java ] > > => macruby-0.7 [ x86_64 ] > > rbx-1.0.1-20100603 [ x86_64 ] > > ruby-1.8.7-p302 [ x86_64 ] > > ruby-1.9.2-p0 [ x86_64 ] > > > > > > localhost:Homebrew Brad$ gem uninstall awesome_print > > Successfully uninstalled awesome_print-0.2.1 > > localhost:Homebrew Brad$ macirb > > ap gem not found. Try typing 'gem install awesome_print' to get > super-fancy output. > > irb(main):001:0> > > > > _______________________________________________ > > MacRuby-devel mailing list > > MacRuby-devel(a)lists.macosforge.org > > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > >

3 2