March 2012 - MacRuby-devel - lists.macosforge.org

Rails.app done by the MacRuby community
by Matt Aimonetti 03 Apr '12

03 Apr '12

Today a mini drama was started after Yehuda Katz announced his kickstarter project to build a ".app" for Rails. He's trying to raise $25k to work on the project, see more there: http://news.ycombinator.com/item?id=3768339 Putting the money raising question aside, I think this is a good project but I think that as a community we can do it together, learn a lot in the process and create an awesome product helping the community. My suggestion is that people interested get together and hack together in an open and public way. Yehuda might get funded and decide to contribute or do his own thing in JS, that's totally besides the point since our motivations would be different so we shouldn't worry about that. So, what do you say? - Matt P.S: Two years ago, I ported couchdbx to MacRuby and extracted some code you can see here: https://github.com/mattetti/mrstuff The couchdbx app is also available in my github repo. -m Sent from my iPhone

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MacRuby development in Xcode
by Rick Lloyd 01 Apr '12

01 Apr '12

I've been trying to learn MacRuby by following " MacRuby - The Definitive Guide" and have encountered problems with the code given in Chapter 7. My system is running MacOS X 10.7.3 and Xcode Version 4.3.2 which were installed on a clean hard drive so there are no remnants of earlier software present to confuse the issue. I'm running MacRuby from the nightly build 03/24 which I installed yesterday - I was previously running an earlier version. Because I am unable to distinguish Xcode problems from MacRuby (or Definitive Guide) problems I'm posting this problem with both communities. Here is a description of the problem I'm having. Chapter 7 includes a table, beginning on pg 129, which is intended to contain Text Field, Combo Box, and Button cells. I am unable to create the latter two cell types following the instructions given. In the case of the Combo Box, I can identify the cell as containing an NSComboBoxCell using the Custom Class on the identiy tab. When I switch to the attributes tab the cell is still identified as Text Field and so I am unable to create the labels for the combo box. Also, the cell field displayed in the table does not have the up/down arrows - no visual cue that there is a list of choices available. The problem with the NSButtonCell is easier to describe as the choice is not available through the Custom Class. If I type it into the field it is replaced with the default NSTextCell. I've loaded the project for Chapter 7 from Matt's Git site and can view the proper behavior for both columns when I load it into Xcode. This code also builds (although with three warnings - none related to the table) and runs. This code can be used to demonstrate the expected response. Any suggestions? thanks in advance, Rick

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App Store
by Erik Lundqvist 29 Mar '12

29 Mar '12

Hi everyone, I'm Erik, a Swede who got lost in London and never looked back. I'm a Java developer who cheats a little bit with iOS, and last year around this time I bought the MacRuby in Action and tried a bit of MacRuby. Introduction over. So, I'm curious. Has anyone actually successfully created a MacRuby app and sold it on the Mac App Store? //Erik

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Structs are broken
by Fjölnir Ásgeirsson 26 Mar '12

26 Mar '12

I've been struggling with accessing C structs from ruby. The problem is: I expose a struct from my framework (definition below). However when accessing/allocating it from ruby it seems the offsets are off by 4 bytes (as if macruby think it's supposed to be a double) Definition: #ifndef __SCRIPTINGBRIDGE__ union _vec3_t { float f[3]; struct { float x; float y; float z; }; struct { float r; float g; float b; }; struct { vec2_t xy; float andY; }; }; typedef union _vec3_t vec3_t; #else typedef struct _vec3_t { float x; float y; float z; } vec3_t; // Bridgesupport freaks out when given the above union so I show it a struct with the same layout #endif Example output: irb(main):001:0> framework "./GLMath.framework" => true irb(main):002:0> v1 = vec3_create(1,2,3) => #<vec3_t x=1.0 y=3.0 z=NaN> irb(main):003:0> v2 = v1.class.new(4,5,6) => #<vec3_t x=4.0 y=5.0 z=6.0> irb(main):004:0> printVec3(v1) 0x676f1310 - 0x676f1314 - 0x676f1318 Vec3: [1.00, 0.00, 3.00] => nil irb(main):005:0> printVec3(v2) 0x676f1310 - 0x676f1314 - 0x676f1318 Vec3: [4.00, 0.00, 5.00] => nil in the above example, vec3_create & printVec3 are C functions, shared using the scripting bridge. So when the struct is allocated from the c side, ruby only sees the first & last items, and the last item is on the offset of the second. when I then pass it to printVec3, it gets the first and last items only (last item taken from the place of the second item, => offsets are double what they should be). then when I allocate it using FFI in ruby, it's correcly read from the ruby side, but when I pass it to a c function, it gets the first item in the correct place, then the second item in the place of the last. The type definitions in my bridge support file are: <struct name='vec3_t' type='{_vec3_t="x"f"y"f"z"f}'/> <function name='vec3_create' inline='true'> <arg type='f'/> <arg type='f'/> <arg type='f'/> <retval type='{_vec3_t=fff}'/> </function> <function name='printVec3'> <arg type='{_vec3_t=fff}'/> </function> Right now I'm working around this by wrapping everything in an object on the objective-c side, but that is very slow and bloated. Has anyone ever gotten structs to work properly or know what is causing this? Note: if I return a pointer to the struct, and then assign to it's address using a boxed struct created from ruby, that works fine it seems. It's only if I return a struct directly. (However, myPointer[0].x = foo; would not work. I'd have to do a=myPointer[0];a.x=foo;myPointer[0]=a) – Fjölnir

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Building MacRuby
by Erik Lundqvist 20 Mar '12

20 Mar '12

Dear all, I need to reinstall MacRuby (updated XCode), and I thought I'd try and build 0.11, but I immediately ran into a brick wall. The llvm-config executable was not located at /usr/local/bin/llvm-config. Please make sure LLVM is correctly installed on your machine and pass the llvm_path option to rake if necessary. Example: $ rake llvm_path=/path/ Is that something I should have installed already? Thanks Erik

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Sequel gem does not install
by Wladjmir Godioz 16 Mar '12

16 Mar '12

with last nightly build: Fetching: sequel-3.33.0.gem ( 34%)ERROR: While executing gem ... (NoMethodError) undefined method `to_str' for #<Errno::EAGAIN:0x40214f3a0>

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NSUserDefaults and registerDefaults
by Erik Lundqvist 16 Mar '12

16 Mar '12

Hi All, It's time for my first newbie question :) Trying to save some default values for user preferences, but failing pretty hard. I was hoping someone would have successfully used NSUserDefaults registerDefaults, and could point me in the right direction. def applicationDidFinishLaunching(a_notification) app_defaults = {"wcff.magic_key" => "hello world"} NSUserDefaults.standardUserDefaults.registerDefaults(app_defaults) NSUserDefaults.standardUserDefaults.synchronize end Elsewhere in the code... @magic_key = NSUserDefaults.standardUserDefaults["wcff.magic_key"] puts "magic_key#{@magic_key}" It just prints out "magic_key"... Actually setting a value in standardUserDefaults seems to work fine, like this NSUserDefaults.standardUserDefaults["wcff.magic_key"] = "hello you" But I want a default Anyone?

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Re: [MacRuby-devel] App Store
by Rob Ista 15 Mar '12

15 Mar '12

Yes, I have a Macruby app in the store for almost a year now ( http://itunes.apple.com/us/app/subtitleresync/id435993360?mt=12 ) … I must admit that i still develop on a separate machine with SL and Xcode 4.0.2 because i want to stay compatible with SL too for the time being (I test it on Lion too ofc) … but more important I must say that with every release of OSX or Xcode something seems to be "broken" or changed with Macruby and Interface Builder, compiler, code signing, etc. … I just don't like to hunt down errors like that for hours or even days so until it's really necessary, i don't fix what ain't broken :) .. it sometimes takes days or longer for the Macruby community to come up with a solution too so i just prefer to stay focused on the apps and leave the tooling stuff to others ... having said that, when you finally do have a good setup, it is a breeze to develop an app in Macruby and get it in the store as long as you meet the criteria of the review team .. i had another app rejected for reasons which were at least a bit vague but that belongs to the life of an app developer :))) Rob > Date: Wed, 14 Mar 2012 15:29:10 +0000 > From: Erik Lundqvist <willcodejavaforfood(a)gmail.com> > To: MacRuby-devel(a)lists.macosforge.org > Subject: [MacRuby-devel] App Store > > Hi everyone, > > I'm Erik, a Swede who got lost in London and never looked back. I'm a Java > developer who cheats a little bit with iOS, and last year around this time > I bought the MacRuby in Action and tried a bit of MacRuby. > > Introduction over. > > So, I'm curious. Has anyone actually successfully created a MacRuby app and > sold it on the Mac App Store? > > Erik

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eval() Behavior Difference Between Ruby and MacRuby
by Braxton Sherouse 08 Mar '12

08 Mar '12

Hello, all. I'm new to the list (and to MacRuby!), so I give my apologies in advance for any newbie indiscretions. I was working today with MacRuby as a scripting language within a Cocoa app, and found a difference between how Ruby and MacRuby's eval functions relate to their calling context. Here's a reduction: % irb --version irb 0.9.5(05/04/13) % irb >> eval("f = 12") => 12 >> f => 12 % macirb --version DietRB (0.6.1) % macirb irb(main):001:0> eval("f = 12") => 12 irb(main):002:0> f NameError: undefined local variable or method `f' for main:TopLevel I'm sure I'm missing something super basic. I followed a number of false leads in trying to figure this out before emailing the list, including checking out the $SAFE global (0 in both cases), and constructing Bindings to the calling context (same result). Thanks in advance for your patience and your help! Best, Braxton Sherouse

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Introduction
by Matthew Carroll 05 Mar '12

05 Mar '12

Hello, I am interested in contributing to the MacRuby project. Please pardon the unsolicited introduction. The contact page suggests introducing oneself. Here is a summary of my programming background: I graduated from Georgia Tech with a degree in CS in 2002. I worked at a startup in the early 2000’s developing Java web apps for government agencies. Next, I worked at Scientific-Atlanta developing device drivers in C for cable headend operators to manage third-party signal processing devices from a management console. Then I worked for a company developing medical transcription software in EJB 3. Now I am an independent iOS developer, developing iOS apps for the apparel retail industry. WineMemories, an iPhone app I designed and developed independently, is available in the app store: http://itunes.apple.com/us/app/wine-memories/id454790043?mt=8 I’d be happy to send you my résumé or talk with if you are interested. Thanks, Matthew

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