[#390749] Why are there so many similar/identical methods in core classes — Kassym Dorsel <k.dorsel@...>

Let's look at the Array class and start with method aliases.

14 messages 2011/12/02

[#390755] Inverse Operation of Module#include — Su Zhang <su.comp.lang.ruby@...>

Hi list,

21 messages 2011/12/02
[#390759] Re: Inverse Operation of Module#include — Ryan Davis <ryand-ruby@...> 2011/12/02

[#390764] Re: Inverse Operation of Module#include — Isaac Sanders <isaacbfsanders@...> 2011/12/02

I would suggest an Adapter pattern use here. IF there is something that has

[#390795] Is there a better way to check this array? — Wayne Brissette <wbrisett@...>

I have an array which contains items that need to be renamed. Unfortunately the way things are changed are based on a comparison of if something else exists. For example in this simple array:

9 messages 2011/12/03

[#390876] black magical hash element vivification — Chad Perrin <code@...>

Ruby (1.9.3p0 to be precise, installed with RVM) is not behaving as I

12 messages 2011/12/05

[#390918] WEB SURVEY about Ruby Community — Intransition <transfire@...>

Did any one else get this survey request?

14 messages 2011/12/07

[#390972] Which is the best online document conversion site? — "Maria M." <mariamoore952@...>

Can anyone tell me that which is the best online document conversion

7 messages 2011/12/08

[#390976] Confusing results from string multiplication — Rob Marshall <robmarshall@...>

Hi,

19 messages 2011/12/08

[#391019] How can I do h["foo"] += "bar" if h["foo"] does not exist? — "Andrew S." <andrewinfosec@...>

Hi there,

13 messages 2011/12/09

[#391027] reading from file without end-of-lines — Janko Muzykant <umrzykus@...>

hi,

20 messages 2011/12/09
[#391028] Re: reading from file without end-of-lines — Gavin Sinclair <gsinclair@...> 2011/12/09

> i'm trying to read a few text values from single file:

[#391031] Re: reading from file without end-of-lines — Robert Klemme <shortcutter@...> 2011/12/09

On Fri, Dec 9, 2011 at 9:58 AM, Gavin Sinclair <gsinclair@gmail.com> wrote:

[#391042] Re: reading from file without end-of-lines — Gavin Sinclair <gsinclair@...> 2011/12/09

On Fri, Dec 9, 2011 at 8:18 PM, Robert Klemme

[#391135] I need advice on what to do next. — Nathan Kossaeth <system_freak_2004@...>

I am new to programming. I read the ebook "Learn to Program" by Chris

23 messages 2011/12/12

[#391216] perf optimization using profile results — Chuck Remes <cremes.devlist@...>

I need some help with optimizing a set of libraries that I use. They are ffi-rzmq, zmqmachine and rzmq_brokers (all up on github).

13 messages 2011/12/13
[#391218] Re: perf optimization using profile results — Chuck Remes <cremes.devlist@...> 2011/12/13

On Dec 13, 2011, at 9:57 AM, Chuck Remes wrote:

[#391234] Re: perf optimization using profile results — Charles Oliver Nutter <headius@...> 2011/12/14

A couple quick observations.

[#391238] Re: perf optimization using profile results — Chuck Remes <cremes.devlist@...> 2011/12/14

On Dec 13, 2011, at 7:03 PM, Charles Oliver Nutter wrote:

[#391324] ruby 1.9 threading performance goes non-linear — Joel VanderWerf <joelvanderwerf@...>

12 messages 2011/12/16
[#391325] Re: ruby 1.9 threading performance goes non-linear — Eric Wong <normalperson@...> 2011/12/16

Joel VanderWerf <joelvanderwerf@gmail.com> wrote:

[#391420] Accessing class instance variables from an instance? — "Shareef J." <shareef@...>

Hi there,

26 messages 2011/12/20
[#391454] Re: Accessing class instance variables from an instance? — Khat Harr <myphatproxy@...> 2011/12/21

Actually, now that I'm thinking about it the existing behavior sort of

[#391456] Re: Accessing class instance variables from an instance? — Josh Cheek <josh.cheek@...> 2011/12/21

On Tue, Dec 20, 2011 at 9:42 PM, Khat Harr <myphatproxy@hotmail.com> wrote:

[#391545] Kernel#exit raises an exception? — Khat Harr <myphatproxy@...>

While I was working on embedding an interpreter I wrote a function to

13 messages 2011/12/24

[#391618] rvmsh: An easy installer for RVM — Bryan Dunsmore <dunsmoreb@...>

I have recently begun work on a project called [rvmsh]

12 messages 2011/12/29

[#391783] Mailspam — Gunther Diemant <g.diemant@...>

Is there a way to stop this mailspam of Luca (Mail)?

12 messages 2011/12/29

[#391790] What’s the standard way of implementing #hash for value objects in Ruby? — Nikolai Weibull <now@...>

Hi!

23 messages 2011/12/29
[#391792] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Gunther Diemant <g.diemant@...> 2011/12/29

I think you can't access instance variables from a class method, so

[#391793] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Nikolai Weibull <now@...> 2011/12/29

On Thu, Dec 29, 2011 at 15:52, Gunther Diemant <g.diemant@gmx.net> wrote:

[#391811] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Robert Klemme <shortcutter@...> 2011/12/29

On Thu, Dec 29, 2011 at 4:06 PM, Nikolai Weibull <now@bitwi.se> wrote:

[#391812] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Nikolai Weibull <now@...> 2011/12/29

On Fri, Dec 30, 2011 at 00:26, Robert Klemme <shortcutter@googlemail.com> wrote:

[#391816] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Josh Cheek <josh.cheek@...> 2011/12/30

On Thu, Dec 29, 2011 at 5:47 PM, Nikolai Weibull <now@bitwi.se> wrote:

[#391833] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Robert Klemme <shortcutter@...> 2011/12/30

On Fri, Dec 30, 2011 at 12:47 AM, Nikolai Weibull <now@bitwi.se> wrote:

Developing Qt4 applications with Ruby 1.9.x

From: Rosalind Mitchell <rcmitchell@...>
Date: 2011-12-06 19:09:06 UTC
List: ruby-talk #390909
I am running KDE on 32-bit Linux Mint Debian Edition.  For several years now I 
have been developing Qt-based applications with Ruby 1.8.

Now I'm anxious to move forward and adopt Ruby 1.9 as urged.  I can install 
1.9.2 from the LMDE repositories, but there doesn't appear to be any Qt4 
libraries available.  So I thought I'd go right up to date, downloading and 
compiling Ruby 1.9.3p0 from scratch, installing it in the /usr/local 
hierarchy.

I found, downloaded and extracted the latest Qt4-QtRuby build files.  This is 
where the headaches began.  Running cmake . failed immediately as cmake could 
not find Ruby.  After scratching my head and searching Google I established 
that the CMakeCache.txt file needed some tweaking.  To be precise, these lines 
needed to be filled out to allow cmake to find the ruby.h file and ruby 
executable:

//Path to a file.
RUBY_CONFIG_INCLUDE_DIR:PATH=/usr/local/include/ruby-1.9.1/i686-linux

//Path to a program.
RUBY_EXECUTABLE:FILEPATH=/usr/local/bin/ruby

This, then, allowed me to build and install the Qt4-QtRuby library.  But then, 
when I went to test it with a very minimal script:

#!/usr/local/bin/ruby -w

require 'Qt4'

app = Qt::Application.new(ARGV)

app.exec()

I get the response:

/usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:1415: warning: mismatched 
indentations at 'end' with 'if' at 1411
/usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2527: warning: method 
redefined; discarding old method_missing

[...]

/usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2527: warning: method 
redefined; discarding old const_missing
/usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:459:in `initialize': 
unresolved constructor call Qt::Application (ArgumentError)
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:459:in 
`initialize'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2640:in `call'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2640:in `block 
in try_initialize'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2639:in `catch'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2639:in 
`try_initialize'
        from ./qt.rb:16:in `new'
        from ./qt.rb:16:in `<main>'

(that second warning repeated several hundred times, though I'm not all that 
concerned about that.)

The test script works fine under 1.8.7, obviously it doesn't do anything but it 
doesn't throw any warnings or errors either.

Doing the same in irb yields

irb(main):001:0> require 'Qt4'
=> true
irb(main):002:0> app = Qt::Application.new(ARGV)
ArgumentError: unresolved constructor call Qt::Application

        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:459:in 
`initialize'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:459:in 
`initialize'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2640:in `call'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2640:in `block 
in try_initialize'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2639:in `catch'
        from /usr/local/lib/ruby/site_ruby/1.9.1/Qt/qtruby4.rb:2639:in 
`try_initialize'
        from (irb):2:in `new'
        from (irb):2
        from /usr/local/bin/irb:12:in `<main>'
irb(main):003:0> 

Enquiries on Google haven't been very fruitful, with just a suggestion that 
the fault lies in the Qt.cpp file but not much help that I could see on exactly 
what the problem is or how to fix it (my knowledge of C++ is sketchy at best).

I have the feeling either that I've missed something very simple, or that Ruby 
1.9.x is not yet able to work effectively with Qt4.  Is there anybody here who 
has encountered this problem?  Should I carry on regardless with 1.9.3 and find 
another GUI interface to work with, or should I reluctantly revert to 1.8.7?

Rosie


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