January 2011 - MacRuby-devel - lists.macosforge.org

MacDriverLog Installer
by Robert Rice 25 Jan '11

25 Jan '11

Hi MacRubyists: MacDriverLog is an application I am developing for truckers using MacRuby. I can't fully test the installer without a second machine. I would appreciate it if someone could download it from http://MacDriverLog.com and let me know if the install package works. Thanks, Bob Rice

3 5

menu app in the login items
by Joel Reymont 25 Jan '11

25 Jan '11

Are there any examples of a MacRuby app that sits in the menu, TimeMachine and WiFi indicator style? What about an app that adds itself to the user's login items to start upon login? Thanks, Joel --- http://wagerlabs.com | @wagerlabs | http://www.linkedin.com/in/joelreymont

4 3

Unsubscribe
by Robert Ash 24 Jan '11

24 Jan '11

Robert Ash ---------- On 24 Jan 2011, at 16:25, 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: Thread safety in apply example? (Matt Massicotte) > 2. Re: Thread safety in apply example? (Alan Skipp) > 3. Re: Thread safety in apply example? (Matt Massicotte) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 24 Jan 2011 07:22:44 -0800 > From: Matt Massicotte <massicotte(a)apple.com> > To: "MacRuby development discussions." > <macruby-devel(a)lists.macosforge.org> > Subject: Re: [MacRuby-devel] Thread safety in apply example? > Message-ID: <48DBC4A8-59D1-42F0-8DD3-2291668D64D2(a)apple.com> > Content-Type: text/plain; charset="us-ascii" > > What's the advantage of this over just iterating over the array serially using each? > > Matt > > On Jan 24, 2011, at 3:40 AM, Alan Skipp wrote: > >> Warning, horrible hack alert! >> I'm sure there must be a far better implementation, but the idea is to have an array subclass which diverts all method calls through a serial dispatch queue, which should ensure thread safe access. >> >> Anyway, here's the horrible hack. By the way, it manages to break Enumerable, other than that it's perfect! >> >> class ThreadSafeArray < Array >> instance_methods.each do |meth| >> eval " >> def #{meth}(*args, &block) >> val = [] >> @serial_queue.async(@group) do >> val[0] = super >> end >> @group.wait >> val[0] >> end" >> end >> >> def initialize(size=0, obj=nil) >> @serial_queue = Dispatch::Queue.new("array.serial_queue") >> @group = Dispatch::Group.new >> super >> end >> end >> >> gcdq = Dispatch::Queue.new('doc') >> @result = ThreadSafeArray.new >> gcdq.apply(5) {|i| @result[i] = i*i } >> p @result #=> [0, 1, 4, 9, 16, 25] >> >> >> Having to create an array for every method call to copy the return value into is terrible, is there a better way of getting a reference to the return value from a dispatch queue? >> >> >> >> On 22 Jan 2011, at 14:52, Ernest N. Prabhakar, Ph.D. wrote: >> >>> Hi Charles, >>> >>> On Jan 21, 2011, at 9:57 PM, Charles Oliver Nutter wrote: >>> >>>> I'm curious about this example in Queue#apply's rdoc: >>>> >>>> * gcdq = Dispatch::Queue.new('doc') >>>> * @result = [] >>>> * gcdq.apply(5) {|i| @result[i] = i*i } >>>> * p @result #=> [0, 1, 4, 9, 16, 25] >>>> >>>> apply is said to issue the jobs in parallel, so this would be making >>>> concurrent updates to the @result array. Are simple arrays in MacRuby >>>> thread-safe? >>> >>> My assumption was that doing a parallel assign: >>> >>> result[i] = i*i >>> >>> would be safe, since it always accessed a unique portion of memory, but doing a serial append: >>> >>> result << i*i >>> >>> would not. But that may have been a mistake on my part, since the size (at least) needs to be updated. Anyone know better? >>> >>> -- Ernie P. >>> >>> >>>> >>>> - Charlie >>>> _______________________________________________ >>>> MacRuby-devel mailing list >>>> MacRuby-devel(a)lists.macosforge.org >>>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel >>> >>> _______________________________________________ >>> MacRuby-devel mailing list >>> MacRuby-devel(a)lists.macosforge.org >>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel >> >> _______________________________________________ >> MacRuby-devel mailing list >> MacRuby-devel(a)lists.macosforge.org >> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > >

2 1

Dispatch gem
by Arthur Gunn 24 Jan '11

24 Jan '11

Hi! I've just made a gem for the dispatch module recently removed from the main macruby codebase. I believe it's all in working order, you should just be able to: $ sudo macgem i dispatch $ macirb > require 'lib/dispatch' => true > (1..4).p_map {|i| i**2} => [1, 4, 9, 16] etc. Hooray! I've just gotten specs running via mspec. At the moment 4 of 81 expectations fail, all in spec/source_test.rb The source is at https://github.com/gunn/Dispatch How does it look? What should happen next? Move the repo under https://github.com/Macruby ? Thanks, -Arthur

3 3

Rspec, Embedded frameworks and ENV['DYLD_FRAMEWORK_PATH']
by Michael Hagedorn 21 Jan '11

21 Jan '11

Has anyone had any luck using rspec and putting the objects under test in an embedded framework? When I try to do this and and put "ENV['DYLD_FRAMEWORK_PATH'] = ENV['BUILT_PRODUCTS_DIR']" in the spec_helper and then execute the rspec file via 'macruby blah_spec.rb', I get a "framework not found" error. The framework is in fact living in the build directory as expected. Can anyone tell me what I am missing? Thanks Mike Hagedorn

2 1

What's happened to Dispatch::Job?
by Martin Hawkins 21 Jan '11

21 Jan '11

I was looking at the short intro to GCD in Matt's book 'Macruby - The Definitive Guide' I have macruby 0.8 and I come across an immediate problem macirb --simple-prompt >> require 'dispatch' LoadError: no such file to load -- dispatch However, it knows about Dispatch: macirb --simple-prompt >> @queue = Dispatch::Queue.new('a-queue-name') => a-queue-name but it doesn't know about Job: macirb --simple-prompt >> job = Dispatch::Job.new { slow_operation } NameError: uninitialized constant Dispatch::Job and, finally, the line on p24, 'To see the available concurrent enumerable methods' macruby -rdispatch -e "puts [].methods.grep(/^p_/)" no such file to load -- dispatch (LoadError) which, I suppose, just reiterates the first point. Is there an 'official' site where I can post queries regarding this book?

10 14

Re: [MacRuby-devel] macruby command in console
by russell muetzelfeldt 19 Jan '11

19 Jan '11

> Date: Wed, 19 Jan 2011 17:55:05 -0500 > From: Robert Rice <rice.audio(a)pobox.com> > Subject: [MacRuby-devel] macruby command in console > > Entering macruby by mistake on the console command line instead of macirb gets no reply. The user must type ctrl-C to abort it. > > Probably macruby should reply with usage information and exit. that's the expected behaviour, exactly the same as the plain /usr/bin/ruby and /usr/bin/irb executables. cheers Russell

1 0

macruby command in console
by Robert Rice 19 Jan '11

19 Jan '11

Entering macruby by mistake on the console command line instead of macirb gets no reply. The user must type ctrl-C to abort it. Probably macruby should reply with usage information and exit. Bob Rice

2 3

BridgeSupport v2
by Martin Hawkins 19 Jan '11

19 Jan '11

I installed the v2 Preview of BridgeSupport a couple of days ago to solve a particular problem with accessing constant values, which it did. I have now found that what was working code now seems to be broken - representedObject in a NSCell object consistently returns nil. I didn't expect the BridgeSupport change to affect anything like this, so am I grasping at straws in thinking this might be the cause?

3 5

what are you building with macruby?
by Joel Reymont 19 Jan '11

19 Jan '11

On Jan 17, 2011, at 7:54 PM, Matt Aimonetti wrote: > Also, what are you building with MacRuby? Since Matt asked... - A trading platform. - A protocol reverse-engineering interface to my USB hardware bus analyzer. - User-space interface for a consumer electronics device that uses MacFUSE provide a virtual file system by accessing Amazon EC2 servers. - Cocoa user interfaces to the above. - User-space USB drivers if I can figure out how to wrap -portions- of IOKit. And anything else I can come up with since MacRuby is so awesome for bootstrapping and prototyping! All of the above except the trading platform are for my clients. Note also that I'm well-versed with C++, Lisp, OCaml, etc. but still want to use MacRuby ;-) --- http://wagerlabs.com | @wagerlabs | http://www.linkedin.com/in/joelreymont

9 8