phosphorescence

specular reflection with mini_magick (2)

2012-02-10T19:43:00.000+09:00

(continued from phosphorescence: specular reflection with mini_magick (1)) "Specular Reflection" consists of 4 operations. clone from original image and rotate it add transparency to cloned image combine original image and cloned one resize combined image In this article, I introduce the operation of both (3) and (4) with referring ImageMagick's sample page and using mini_magick. Roughly

specular reflection with mini_magick (1)

2012-02-07T21:24:00.000+09:00

"Specular Reflection" - a.k.a. "mirror effect" - is the most popular effect for image file to be good-looking. This effect consists of 4 operations. clone from original image and rotate it add transparency to cloned image combine original image and cloned one resize combined image In this article, I introduce the operation of both (1) and (2) with referring ImageMagick's sample page and using

JRuby 1.7 becomes 1.9 mode as default mode

2012-02-04T20:57:00.000+09:00

In this issue ticket - http://jira.codehaus.org/browse/JRUBY-6387 - JRuby team surveys that JRuby 1.7 becomes 1.9 mode as default mode or not. And then, decided!!

Ruby on Rails 3.2 had been released. (with one stumbling point)

2012-02-02T20:58:00.000+09:00

About two weeks ago, Ruby on Rails 3.2 had been released. To update to the rails 3.2.0 or higher, you not only do the "gem update" or "bundle update" but also copy rails command file and rackup command file manually. There is only one stumbling point when updating to the rails 3.2.0 or higher - despite ruby-gems related with rails are upgraded successfully, rails command and rackup command are

Start reading "Refactoring: Ruby Edition"

2012-01-30T19:09:00.000+09:00

I have started reading the Japanese edition of "Regular Expressions Cookbook". Refactoring: Ruby Edition (Japanese Edition) Refactoring: Ruby Edition The cover of English edition is below: Contrary to expectations before buyying it, there are plenty of sample codes to train refactoring. So that I will take a long time for finishing to read this book.

Privacy and Big Data

2012-01-27T20:50:00.001+09:00

This book contains nothing about any programming languages, but, IMHO, this is the greatest one among no-programming-language books ever published by O'Reilly. As title said, this book is about "Privacy and Big Data". Authors describe how different view of privacy between U.S. and Europe, and they also describe how degree our privacy is protected or violated in nowadays - in the digital age.

Install OpneJDK7 on FreeBSD

2012-01-24T19:13:00.000+09:00

FreeBSD deals many kind of JDKs. But, at the time of writing this article, OpenJDK7 is the only one that are ready for Java7. So that I introduce the way to install OpneJDK7 on FreeBSD. Edit /etc/make.conf for OpenJDK7Add these definitions to /etc/make.conf: JAVA_VENDOR=openjdk JAVA_VERSION=1.7 BOOTSTRAPJDKDIR=/usr/local/openjdk7 JAVA_PREFERRED_PORTS=JAVA_PORT_NATIVE_OPENJDK_JDK_1_7 Install via

Rebuild Korundum and QtRuby to use Ruby 1.9

2012-01-21T17:52:00.003+09:00

In the previous article, I introduce thee way to rebuild portupgrade to use Ruby 1.9 on PC-BSD. By the way, on PC-BSD, there are two more libraries that depend on ruby 1.8 - Korundum and QtRuby. So that I introduce the way to rebuild these to use Ruby 1.9. Before rebuildingPrepare ports on /usr/ports Install ccache to build Ruby 1.9, on /usr/ports/devel/ccache Add RUBY_DEFAULT_VER=1.9 to /etc/

Rebuild portupgrade to use Ruby 1.9

2012-01-19T19:58:00.000+09:00

PC-BSD installs portupgrade as default, but, it uses Ruby 1.8 - not Ruby 1.9. In this article, I introduce the way to rebuild portupgrade to use Ruby 1.9. Before rebuildingPrepare ports on /usr/ports Install ccache to build Ruby 1.9, on /usr/ports/devel/ccache Add RUBY_DEFAULT_VER=1.9 to /etc/make.conf Deinstall Ruby 1.8 on /usr/ports/lang/ruby18 Install Ruby 1.9 on /usr/ports/lang/ruby19

Dual Boot PC-BSD 9.0 and OS X Lion on Macmini

2012-01-16T18:47:00.000+09:00

A few days ago, both FreeBSD 9.0 and PC-BSD 9.0 are officially released, and these handbooks are also upgraded. FreeBSD Handbook PC-BSD Users Handbook IMO, the best advantage of PC-BSD 9.0 compared with FreeBSD 9.0 is that the installer can make easily dual boot with FreeBSD 9.0/PC-BSD 9.0 and Mac OS X 10.5 or later on Macmini, Macbook and any Mac machines. In this article, I introduce the way I

mini_magick 3.4

2012-01-13T20:20:00.005+09:00

At the end of last year, both mini_magick 3.4 and subexec 0.2.1 are released. Before this release, we had to write different codes for POSIX and for Windows as mentioned in phosphorescence: mini_magick - A better RMagick alternative. Then now, since this release, we can write the same codes both for POSIX and for Windows. require 'mini_magick' image = MiniMagick::Image.open("http://www.google.com

I've finished reading "Regular Expressions Cookbook"

2012-01-10T18:41:00.000+09:00

I've finished reading Regular Expressions Cookbook. Between Chapter 1 and Chapter 3, This book makes us learn or re-learn the basis of Regular Expression. It is useful both for newbie and for others. Between Chapter 4 and Chapter 8, This book is totally "the recipe book". We should re-read each corresponding chapters whenever we need any solutions. Japanese edition contains how to deal Japanese

Enable G1GC

2012-01-07T20:05:00.000+09:00

Since Java7 update 2, Java7 becomes stable, steadily. So that now is the time to try G1GC. > java -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC Another args... If you want to use G1GC commonly, set these VM args to environment variable JAVA_OPTS. JAVA_OPTS="-XX:+UnlockExperimentalVMOptions -XX:+UseG1GC"> java $JAVA_OPTS Another args...Another advantage to set JAVA_OPTS is that other Java programs

Winter brake 2011-2012

2011-12-22T21:43:00.000+09:00

I take a winter brake, so I suspend posts and comments to this blog for a moment. Resume will be January 7, 2012. I wish you a Merry Christmas and a Happy New Year.

Tips: Which are you using java command, JDK's or JRE's?

2011-12-19T20:03:00.002+09:00

This is an easy tips. Which are you using java command, JDK's or JRE's? How do you recognize it? Let's type the command below: > java -server -version java version "1.7.0_02" Java(TM) SE Runtime Environment (build 1.7.0_02-b13) Java HotSpot(TM) 64-Bit Server VM (build 22.0-b10, mixed mode)If succeed, that is JDK's , and if not, that is JRE's.

Qt 4.8.0 and QtCreator 2.4.0 have been released

2011-12-16T20:09:00.002+09:00

In a few days, Qt Framework 4.8.0 and QtCreator 2.4.0 have been released. Since this release, Lighthouse project is finally integrated.

BigMath

2011-12-13T22:36:00.000+09:00

Since Ruby 1.9.3, bigdecimal library has powered up. Especially, BigMath module is so. irb(main):001:0> require 'bigdecimal/math' => true irb(main):002:0> prec = 10 => 10 irb(main):003:0> (-BigMath::PI(prec)).to_s => "-0.3141592653589793238462643388813853786957412E1" irb(main):004:0> BigMath::exp(-BigMath::PI(prec), prec).to_s => "0.4321391826E-1" But, unfortunately, bigdecimal library now does

Mono 2.10.7 for Mac has been released

2011-12-10T08:57:00.001+09:00

A few days ago, Mono Framework 2.10.7 has been released only for Mac OS X. this release includes fixes for gtk related bug - e.g. Multi-byte characters are garbled on MonoDevelop. So that, since 2.10.7, we just install and use Mono and MonoDevelop without multi-byte font settings like phosphorescence: Modify the default font of Mono after 2.10.3.

Ignore case partially

2011-12-08T20:48:00.000+09:00

It's easy to ignore case of whole word in regular expression. But How do we do ignore case partially? For example, matching with AbcD, abcD, Abcd and abcd, but not matching ABCD, aBCd and so forth. In the Japanese edition of "Regular Expressions Cookbook", there are two approaches. mode toggle "i"In the page #28, surround the word to ignore between (?i) and (?-i): /(?i)a(?-i)bc(?i)d(?-i)/ group

Start reading Regular Expressions Cookbook

2011-12-05T19:41:00.000+09:00

I have started reading the Japanese edition of "Regular Expressions Cookbook". The cover of English edition is below: In earlier page, I encountered (?i) that I never knew until reading the Recipe 2.1 on this book.

Screenshot of Snippper

2011-12-02T21:54:00.001+09:00

In my previous article, I introduced just a little bit about "Snapper". Now then I introduce these screenshots. The first one is the screenshot about list of snapshots. The second one is the screenshot about each snapshot.

I've finished reading "Agile Web Development with Rails 4th edition"

2011-11-29T23:59:00.000+09:00

I've finished reading Agile Web Development with Rails 4th edition. Rails 3.1 is significantly different both from rails2 and from rails3.0, so that you should read it if you want to catch up latest rails. In this book, all samples are written with Ruby 1.9 - there is no exaggeration that Pragmatic Programmers recommend using Ruby 1.9. In this book, MinGW is introduced as Windows Environment -

Tips for MongoDB cache store and assets on Rails 3.1

2011-11-26T18:40:00.001+09:00

(continued from phosphorescence: How to use MongoDB as model, session store and cache store on Rails3) MongoDB cache store does not accept binary cacheRails3.1's cache feature caches all – page caches, action caches, fragment caches and caches for files called assets(JavaScripts, stylesheets and images). All these are cached in default. But MondoDB cache store we have chosen in previous article

How to use MongoDB as model, session store and cache store on Rails3

2011-11-24T21:09:00.001+09:00

When we use rails3 as out-of-the-box, we implicitly choose ActiveRecord for model, Cookie for session store and on-memory for cache store. But we can choose MongoDB for all of them. I start to explain these ways one by one. MongoDB as modelThere are two de-facto mapping libraries for MongoDB – the one is MongoMapper and the other one is Mongoid. In this article, I choose Mongoid. When we choose

Mono Project is looking for answers to the questionnaire

2011-11-21T20:15:00.001+09:00

On download page of Mono project, they are looking for answers to the questionnaire. In current status, Mono project faces to mobile products, and less facing to existing products and features. So, if you want to run ASP.NET MVC, F# and so forth on Mono Framework in the future as same as current, please visit the site and appear with answering the questionnaire. On download page of Mono project

openSUSE 12.1 has been released - for new UXs

2011-11-18T20:23:00.001+09:00

2 days ago, openSUSE 12.1 has been released (see this post). This is not only the release for latest packages but also the release for new UXs. New Installation ExperienceIf you want install from openSUSE 11.3 or former one, or want to clean-install, download and use install media as you done before. But if you want to install from openSUSE 11.4, you can update with this approach. Of course,

Sample for uploading file in Rails3 way on AWDwR 4th chapter21

2011-11-15T19:30:00.000+09:00

At page 348 on Agile Web Development with Rails 4th edition chapter21 (ActionView), there are samples for uploading file. But, these are totally in Rails2 way. So I re-write in rails3 way. Model> rails g model Picture comment:string name:string content_type:string data:binary migration file : same as on the book picture.rb : class Picture < ActiveRecord::Base validates :content_type,

Rails3's form helpers are ready to HTML5 input types

2011-11-12T18:45:00.001+09:00

On Agile Web Development with Rails 4th edition chapter21 (ActionView), I learn the fact that Rails3's form helpers are ready to HTML5. Form helper of Rails3Corresponding HTML5 input type search_fieldsearch telephone_fieldtel url_fieldurl email_fieldemail number_fieldnumber range_fieldrange There are no form helpers corresponding neither input types related with date or time, nor input type

mini_magick - A better RMagick alternative

2011-11-10T19:51:00.000+09:00

Unfortunately, RMagick has been a vaporware despite new developer had been inherited from former one. There are less activities. So that we should seek its alternative. The better one is mini_magick. installation> gem list mini_magick Successfully installed subexec-0.1.0 Successfully installed mini_magick-3.3 UsageIn short, check readme. For example for POSIX: require 'mini_magick' image =

Install Ruby goodies for ruby 1.9.3 on Windows

2011-11-07T21:18:00.001+09:00

If you install Ruby 1.9.3 on Windows from source, there are two lacked features - readline and debugger. This article introduces using these features in Ruby 1.9.3 on Windows. readlineIf you are a specialist of cygwin or mingw, you may also build readline from source. But, there are an easier way - installing rb-readline. > gem install rb-readlineAnd you should check rb-readline is active like

Ruby 1.9.3 p0 has been released

2011-11-04T19:59:00.002+09:00

A few days ago, finally, Ruby 1.9.3 p0 has been released. If you are a Windows user, you can download installer from here. If you are a Windows user and if you want to build from source by yourself, let's refer to the instructions written in phosphorescence: Clean installation Ruby 1.9.3 preview1 with MinGW and MSYS (Of course, ready for Windows 8 preview).

Autumn short vacation 2011

2011-10-24T19:35:00.002+09:00

I take a autumn vacation, so I suspend posts and comments to this blog for a moment. Resume will be November 4, 2011.

make unobtrusive CoffeeScript on AWDwR 4th beta chapter15

2011-10-21T21:33:00.000+09:00

On Agile Web Development with Rails 4th edition beta chapter15 (Internationalization), there is one more stuck point not-related with internationalization. In this chapter, JavaScript sample is not unobtrusive one. So I try to rewrite the sample with unobtrusive CoffeeScript. application.js and application.html.erbIn this tutorial, we should use CoffeeScript only store.js.coffee. So we can omit

Addenda for AWDwR 4th beta chapter15

2011-10-18T22:35:00.001+09:00

Agile Web Development with Rails 4th edition beta has a quality almost like final version. But, chapter15 (Internationalization) just has beta one. There are some stuck points. So I try to explain these points. Configure default locale and available localesIn this book, author creates the file config/initializers/i18n.rb and configure default locale and locales for drop down list in this file.

Rails 3.1.1 never depends on bcrypt-ruby, but must be required.

2011-10-15T19:36:00.000+09:00

One week ago, Ruby on Rails 3.1.1 has been released. Since this release, rails never depends on bcrypt-ruby. But, when you use some functions related with encryption, you need to choice from some encryption gems. For example, if you want to use has_secure_password, you should write onto Gemfile like below: gem 'bcrypt-ruby', '~> 3.0.0'

MySQL Connector/Net 6.4.4 has been released

2011-10-12T18:14:00.000+09:00

In two weeks ago, MySQL Connector/Net 6.4.4 has been released(Check change log). You may think this release is small bug-fix one. But, for ASP.NET MVC3 / EntityFramework4 developer, this contains big change. Since this release, "Code first" function runs correctly with PluralizingTableNameConvention. So you don't have to remove this convention like this post anymore!

Ruby community announces 1.8.x will be discontinued

2011-10-10T08:52:00.002+09:00

Ruby community announces that Ruby 1.8.7 will be stopped developing in June 2012 and will be discontinued including any bug-fixes in June 2013. Plans for 1.8.7 I strongly welcome this decision. And I also hope for Ruby Association that they will change their Ruby Certification from Ruby 1.8.7 tests to ruby 1.9.3 tests!

R.I.P. Steve Jobs

2011-10-07T20:27:00.003+09:00

Thank you, Steve. I use OS X Lion on my Macmini, and Windows 8 DP on its Bootcamp comfortably.

Two .js templates in Rails 3.1

2011-10-04T22:07:00.002+09:00

In Rails 3.1, there are two JavaScript templates - the one is 'app/views/**/*.js.erb', the other one is 'app/assets/javascripts/*.js.coffee'. What are these? And how different are these? In short, 'app/views/**/*.js.erb' is bare jQuery with ERb template, and 'app/assets/javascripts/*.js.coffee' is CoffeeScript file. In more detail, 'app/views/**/*.js.erb' is written for the response of Ajax

Where will Qt go? (reprise)

2011-10-01T18:34:00.002+09:00

10 months ago, I wrote the article: phosphorescence: Where will Qt go?. In today, despite the fact that Qt 4.7.4 and QtCreator 2.3.1 had been released, Qt again encounters the pinch to be discontinued. The reason is that Meego is discontinued because Intel decide to marge Meego to Samsung's LiMo, and rename these to Tizen. Tizen announces they recommand to use HTML5 as mobile application

"git show" nearly equals to "git diff"

2011-09-29T18:17:00.000+09:00

git diff has many options and these can do many features. And the most useful feature is to get latest diff. > git diff HEAD^but, this feature has more useful alias: git show > git show

Ruby 1.9.3 RC1 has been released

2011-09-26T19:32:00.000+09:00

A few days ago, Ruby 1.9.3 RC1 has been released. If you are Windows user, you can install with doing instructions in phosphorescence: Clean installation Ruby 1.9.3 preview1 with MinGW and MSYS (Of course, ready for Windows 8 preview).

What means "fsc" in functional programming?

2011-09-23T14:37:00.001+09:00

In functional programming domain, there are 2 executable files named "fsc". Which one is Scala's daemon compiler. Which other one is F# compiler. If you install both and set both to your PATH, a name collision occurs. So that, F# team treats it with renaming F# compiler from "fsc" to "fsharpc" when installer finds there is Scala. That commit is below: Commit

Ruby 1.9.3 preview on Windows 8 preview

2011-09-20T20:44:00.000+09:00

I have installed Ruby 1.9.3 preview1 on Windows 8 preview on Mac mini (Late 2009). When I installed Windows 8 preview on Mac mini (Late 2009) with using Boot camp, I referred these articles. How to install Windows 8 Preview using Boot Camp How To Install Windows 8 On Mac Then I have installed Ruby 1.9.3 preview1 with using MinGW, referring my phosphorescence: Clean installation Ruby 1.9.3

AWDwR 4th beta is ready for Rails 3.1

2011-09-17T21:15:00.002+09:00

As you may know, Agile web development with Rails(a.k.a. AWDwR) becomes ready for Rails 3.1. In other words... Now the edition of AWDwR is 4th beta. And its e-book becomes ready for Rails 3.1 and Ruby 1.9.x. It's good entry book for starting Rails 3.1 with Ruby 1.9.x. It's also good book for starting Sass and CoffeeScript. Of course, I'm reading this e-book.

F# 3.0 is officially announced

2011-09-15T19:35:00.000+09:00

In the BUILD conference, F# 3.0 is officially announced. F# 3.0 Developer Preview Now Available! Good newsType Providers LINQ with Query Expression Bad newsAt this moment, it is released for only MSDN subscriber. Despite Windows 8 previrew does not need any subscriptions :-<

Two tips for installaing Rails 3.1

2011-09-12T19:23:00.000+09:00

About two weeks ago, Ruby on Rails 3.1 had been released. I found there are two tips for installation - compared with the previous version. You should install node.jsRuby on Rails 3.1 needs server-side ECMAScript because some gems of Rails 3.1 need it - CoffeeScript and sass. So you should install node.js. Especially, I recommend it for windows user because node.js provides windows binary. You

Summer vacation 2011

2011-08-29T06:44:00.000+09:00

I take a summer vacation, so I suspend posts and comments to this blog for a moment. Resume will be September 12, 2011.

Studying F# : async

2011-08-26T21:29:00.001+09:00

The sample in phosphorescence: Studying F# : Accumulator, pipe and composition is written as sync program. In this article, I try to re-write that sample to async program with async { } cluase. Microsoft (R) F# 2.0 Interactive build 2.0.0.0 Copyright (c) Microsoft Corporation. All Rights Reserved. > let fizzBuzzMapper data = - Seq.map ( fun elem -> async { return (elem, (elem % 3 = 0), (

I've finished reading "Professional F# 2.0"

2011-08-23T02:25:00.000+09:00

I've finished reading Professional F# 2.0. This book is useful for learning F# at first, especially Part0 ~ Part III. But to read this book requires some prerequisites. Minimum knowledge of OCaml - this book does not contain any explanations about let in clause. Minimum knowledge of CLR - but that is covered in .NET Book Zero Contents in Part IV are slightly out of date and slightly out of need

Studying F# : ignore

2011-08-20T20:24:00.000+09:00

POSIX shell has /dev/null - a kind of redirect target to ignore standard outputs and error outputs. In F#, there is a similar function, the name is ignore. To illustrate along the examples in Studying F# : Accumulator, pipe and composition, all the functions using |> ignore return unit. > let fizzBuzzMapper data = - List.map ( fun elem -> (elem, (elem % 3 = 0), (elem % 5 = 0) ) ) data;; val

Studying F# : Accumulator, pipe and composition

2011-08-18T22:08:00.004+09:00

F#'s collection classes have some accumulator methods. method namedescription foldthe base accumulator method to accumulate a collection fold2the variation of fold method to accumulate two collections scanthe variation of fold method to return not only last result and but also intermediate results reducethe special usage of fold method if both accumulator and elements are in same type And

Modify the default font of Mono after 2.10.3

2011-08-15T21:32:00.000+09:00

(Since MonoFramework 2.10.7, there are no needs to do this instructions. Please update your MonoFramework to 2.10.7 or above.) After Mono Framework 2.10.3, the way was changed how we modify the default font of Mono application like MonoDevelop. In this post, I write the way to modify from "Lucida Grande" to "Hiragino Maru Gothic Pro". Detect gtkrc file. If you are a MacOS X user, this file is

I've finished reading "Semiotics of Programming"

2011-08-12T22:38:00.000+09:00

I've finished reading Semiotics of Programming. I recognized these things from this book: What is "Object-oriented programming", and what is "Functional programming". Object-oriented programming as trialism. Why and How "tail call optimization" is. Why and How "currying" is. The word "Monad" indicates different meanings - the one for the term of philosophy and the other for the term of

Clean installation Ruby 1.9.3 preview1 with MinGW and MSYS

2011-08-09T22:14:00.006+09:00

My previous post is only applicable for overwriting onto existing ruby 1.9.x. But, if you want to install ruby 1.9.3 with MinGW and MSYS from zero, we need more instructions. Set up MinGW and MSYSAt first, installing msysGit with msysGit-fullinstall-1.x.x-previewyyyymmdd.exe, not Git-1.x.x-previewyyyymmdd.exe, because full installer contains zlib.h, iconv.h and plenty of header files and

SublimeText2 - a supreme editor I encountered

2011-08-06T20:24:00.001+09:00

In fact, now Sublime Text 2 is still beta. But, I have tried it a little, I discover this editor is the one I ever encountered. There are many advantage for me. Multi language - tons of Static and dynamic languages ready Multi platform - for Windows, Mac OS X and Linux Very useful on every platforms Affordable - 1 user 1license So I decide to throw past editors away - say good-bye to xyzzy,

Build libffi and libyaml on MinGW for Ruby 1.9.3

2011-08-04T21:51:00.005+09:00

This article is for overwriting installation. If you want to do clean installation, check phosphorescence: Clean installation Ruby 1.9.3 preview1 with MinGW and MSYS. Since Ruby 1.9.3, Ruby will become to depend on both libffi and libyaml. If you are Mac user or Linux user, that's easy. But, if you are windows user, it's difficult. In this post, I introduce building both libffi, libyaml and ruby

Kernel 3.0 is coming in openSUSE tumbleweed

2011-08-01T19:18:00.002+09:00

http://download.opensuse.org/repositories/openSUSE:/Tumbleweed/standard/ Kernel 3.0 is ready in openSUSE Tumbleweed. Of course, it succeeds to start up.

Units of measure libraries for ruby

2011-07-29T18:41:00.000+09:00

alchemist and vanunits, these are two ruby libraries to manipulate "Units of measure". Most impressive character of both is these can write "Units of measure" codes in rubyish method chain style. alchemistProsLightconsCannot calculate devision of units Not ready for String#inspect to show units vanunitsProsCan calculate devision of units Ready for String#inspect to show unitsconsToo heavy,

Retrospective of my LT

2011-07-26T19:19:00.002+09:00

Slide (fixed)YetAnotherMVC3vsRails3.pdf SurveyComparing whole cultures when developing with each framework, not framework itself only. Comparing de-facto and out-of-the-box libraries and tools with full-stack structure, if each framework consists in loosely coupled. Ruby and C#, Both my languages. Where I fixed incorrect:LINQ to SQL correct:LINQ to Entities Sample codeshttps://github.com/dw3w4at

update summaries of RubyKaigi 2011

2011-07-23T23:59:00.001+09:00

I update summaries that I attend of RubyKaigi 2011. phosphorescence: The 1st day of RubyKaigi 2011 (Morning) phosphorescence: The 1st day of RubyKaigi 2011 (Afternoon) phosphorescence: The 2nd day of RubyKaigi 2011 (Morning) phosphorescence: The 2nd day of RubyKaigi 2011 (afternoon) phosphorescence: The last day of RubyKaigi 2011 I say again thanks to all staffs, speakers and attendees.

Congrats, kernel 3.0 is out!

2011-07-23T10:58:00.003+09:00

The 3.0 kernel is out If you want to try kernel 3.0 on your openSUSE, use repository below at your own risk. http://download.opensuse.org/repositories/Kernel:/HEAD/standard/ And there are no available ones in stable repository and in Tumbleweed repository at now. (continue to phosphorescence: Kernel 3.0 is coming in openSUSE tumbleweed)

Ruby 1.9.2 p290 and Ruby DevKit 4.5.2 have been released

2011-07-21T20:16:00.000+09:00

A few days ago, Ruby 1.9.2 p290 and Ruby DevKit 4.5.2 have been released. If you are Windows user, You are able to choice installing from source with DevKit or installing with RubyInstaller.

The last day of RubyKaigi 2011

2011-07-18T23:59:00.004+09:00

Today is the 3rd day of RubyKaigi 2011 and THE LAST DAY of the RubyKaigi. In this day, I attended these sessions: Reports of Nihon-ruby-no-kai Video (Japanese)by some Nihon-ruby-no-kai members Nihon-ruby-no-kai as General AssociationPlan of establishment: August 2011, on schedule Advantages of "legal personality" new member typesregular member general member honorary member activitiesAs before

The 2nd day of RubyKaigi 2011 (afternoon)

2011-07-17T23:59:00.006+09:00

In this afternoon, I attended these sessions: Thread Group Video (Japanese)by Hidetoshi Nagai Ruby ThreadGroup in currentThere is no hierarchies between any ThreadGroups On running, we can change a ThreadGroup that thread belongs to. Points to improveThere is no API for manipulate threads as groupMake its API ACL between any ThreadGroupsNew state : dominate Refine Thread Queue Most

The 2nd day of RubyKaigi 2011 (Morning)

2011-07-17T11:59:00.005+09:00

Today is the 2nd day of RubyKaigi 2011. In this morning, I attended these sessions: Ruby goes to HOLLYWOOD Video (English)by Elise Huard A movie film is taken at any different locations in parallel. A movie soudntrack is also taken at more different location. A movie director builds these materials as one movie, in the last step. Oh it's like MapReduce. In fact, people do smoething in parallel.

The 1st day of RubyKaigi 2011 (Afternoon)

2011-07-16T23:59:00.002+09:00

In this afternoon, I attended these sessions: Next version of Ruby 1.8 and 1.9 Video (Japanese)by some Ruby committers There are no futures for Ruby 1.8.xRuby 1.8.7 goes only for maintenance release Ruby 1.8.6 will become the final maintenance release in the next year Use Ruby 1.9.x Ruby 1.9.3Until 1.9.2, The license is dual licenses of "GPLv2 and Ruby license"GPLv3 incompatible Since 1.9.3,

The 1st day of RubyKaigi 2011 (Morning)

2011-07-16T11:59:00.005+09:00

The 1st day of RubyKaigi 2011 was held at here. Google Maps In this morning, I attended these sessions: OpeningVideo 1 (Japanese)Video 2 (Japanese) by Yoshimasa Takahashi by Koichi Sasada Opening speech for the last RubyKaigi Introduction of contents at this year KeynoteVideo (English)by Aaron Patterson title: Ruby ruined my life Boundaries between ruby and rails Boundaries between the English

ViewBag is not living in redirected action

2011-07-13T21:22:00.000+09:00

ViewBag - a place holder between action and view - is living in one response. In other words, ViewBag is not living in redirected action despite the fact Rails' flash go living. Then, what should we use? It is TempData Controller#Edit action ViewBag.Hello = "Hello ViewBag"; TempData["Hello"] = "Hello TempData"; return RedirectToAction("Index"); Index view ViewBag : @ViewBag.Hello
TempData

Mono 2.12 is coming soon

2011-07-11T19:08:00.001+09:00

There are a draft of release note for Mono 2.12. This release will make improvement both for SGen and for C# compiler.

Java7 launch event in Tokyo

2011-07-08T21:44:00.001+09:00

In yesterday, Java7 launch event was held at Aoyama, Tokyo. the program is like below: Opening Summary of Java7 & Java8 HotRockit / New licenses for Java NetBeans 7.0 / Project Coin InvokeDynamic Fork/Join Framework -> Lambda More new I/O Lightning talks I had two thoughts from this event. Both G1GC and InvokeDynamic are great technologies. It's good news for LLs (like JRuby) on JVM. But, new

Updated MySQL Connector/Net

2011-07-06T20:30:00.092+09:00

Current MySQL Connector/Net is 6.3.7, and this version can do code first in limited condition. This post expresses the instruction of code first with MariaDB. Do until phosphorescence: Create Simple MVC 3 App with VWDExpress and MariaDB without table creation Create the initializer classusing System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data.Entity;

mysql2 runs successfully again

2011-07-04T18:30:00.030+09:00

after the version 0.2.11 or 0.3.6, mysql2 runs successfully again. And I introduce the way to run rails 3.0.9 with mysql2 0.2.11 on MariaDB 5.2.7 in Windows. Install the MariaDB on Windows into C:/MariaDB Install ruby 1.9.x with Ruby DevKit 4.5.1 Install rails 3.0.9 Install mysql2 0.2.11> gem install mysql2 --version=0.2.11 --platform=ruby -- --with-mysql-include=C:/MariaDB/include --

Semiotics of Programming

2011-07-01T19:02:00.023+09:00

Now I'm reading "Semiotics of Programming". The book deals with semiotics. And at the same time, the book also deals with the difference of paradigm between object-oriented programming and functional programming. This book is a interesting academic book, and is also a good introduction for who wants to learn this difference of paradigm.

Selected as an LTer

2011-06-28T22:01:00.002+09:00

I've selected as an Lightning Talker in RubyKaigi2011. Lightning talks 1 - July 17, 2011 (Main Hall) My LT title is Yet Another "ASP.NET MVC 3 vs. Ruby on Rails 3". I will do my best!! GoodiesRubyKaigi staffs release some goodies in here.

Calculate the firefox year #2

2011-06-25T22:28:00.001+09:00

(continued from phosphorescence: Calculate the firefox year) A rapid pace of growth of IT is often likened to a "dog year". And now, more rapid pace comes! It calls "firefox year". http://mozilla.jp/firefox/preview/faq/#q-rapid-3 Firefox 5 was released at 2011-06-21. Firefox 6 will be released at 8 weeks after Firefox 5's one. Firefox n + 1 will be released at 6 weeks after Firefox n's one. So

Calculate the firefox year

2011-06-23T21:47:00.003+09:00

A rapid pace of growth of IT is often likened to a "dog year". And now, more rapid pace comes! It calls "firefox year". http://mozilla.jp/firefox/preview/faq/#q-rapid-3 Firefox 5 was released at 2011-06-21. Firefox 6 will be released at 8 weeks after Firefox 5's one. Firefox n + 1 will be released at 6 weeks after Firefox n's one. So I try to calculate the year when the version equals release

Studying F# : Combination of Generics and Discriminated Union

2011-06-20T18:43:00.016+09:00

We can use generics in Discriminated Union's of clause. type Component<'a> = | Composite of list> | Leaf of 'a let compositeSample = Composite([ Leaf(2); Composite([ Leaf(1); Leaf(3) ]) ])

MariaDB 5.2.7 for windows is big change.

2011-06-17T19:41:00.015+09:00

In yesterday, MariaDB 5.2.7 has been released. For POSIX, this release is minor release. But. for windows, this release is almost major release with three things. Upgrading wizard for existing MariaDB windows services. HeisiSQL is bundled as Defualt client for Windows MariaDB. Default my.ini is in "MariaDB installation directory\data\my.ini".

Studying F# : Reference cell

2011-06-14T20:04:00.000+09:00

Reference cell is a keyword for using immutable binding as mutable container approximately. define reference cell> let refCellInt = ref 10;; val refCellInt : int ref = {contents = 10;}change value in reference cell> refCellInt := 20;; val it : unit = () > System.Console.WriteLine(refCellInt.Value);; 20 val it : unit = ()undefine reference cell> let normallInt = !refCellInt;; val normallInt :

Comparison of Ruby's Enumerable and C#'s Linq to Object #2

2011-06-11T22:32:00.000+09:00

The samples for Grouping in interactive shell. Ruby 1.9's Enumerable on Mac OS X$ irb1.9 irb(main):001:0> one_to_ten = 1..10 => 1..10 irb(main):002:0> one_to_ten.group_by {|i| i % 3} => {1=>[1, 4, 7, 10], 2=>[2, 5, 8], 0=>[3, 6, 9]} Mono(C#)'s Linq to Object on Mac OS X$ csharp Mono C# Shell, type "help;" for help Enter statements below. csharp> using System.Linq; csharp> int[] oneToTen = new

Comparison of Ruby's Enumerable and C#'s Linq to Object #1

2011-06-09T19:50:00.000+09:00

The samples for restriction and projection in interactive shell. Ruby 1.9's Enumerable on Mac OS X$ irb1.9 irb(main):001:0> one_to_ten = 1..10 => 1..10 irb(main):002:0> one_to_ten.find_all {|i| i % 2 == 1 }.collect {|i| i**2} => [1, 9, 25, 49, 81]Mono(C#)'s Linq to Object on Mac OS X$ csharp Mono C# Shell, type "help;" for help Enter statements below. csharp> using System.Linq; csharp> int[]

Timetables of RubyKaigi2011 are revealed

2011-06-06T21:21:00.002+09:00

Timetables of RubyKaigi2010(a.k.a. THE LAST RubyKaigi) are revealed now. Timetable in English Timetable in Japanese The most notable and the most misterious session is Yami RubiKaigi. It means roughly "Conference In The Dark".

Studying F# : let in

2011-06-03T20:50:00.000+09:00

I confused about "let in" clause because there are no explains and no descriptions about this in the book Professional F# 2.0. So I search about it in another sites, then I guess "let in" clause is used for "throwaway" binding. The sample is below: > let useForRightSideOfIn arg = - System.Console.WriteLine(arg.ToString()) in List.iter useForRightSideOfIn [1;2;3];; 1 2 3 val it : unit = () >

Studying F# : inline keyword

2011-05-31T18:30:00.045+09:00

When you define simple calculator function, you just write like below: let add a b = a + b There is a question. What type of these arguments? In F# interactive console, it's int, so othre numeric types is not accepted for this function. > let add a b = a + b;; val add : int -> int -> int > add 2 3;; val it : int = 5 > add 2.0 3.0;; add 2.0 3.0;; ----^^^ stdin(3,5): error FS0001: This

openSUSE Tumbleweed on VirtualBox

2011-05-28T18:34:00.000+09:00

If you want to launch openSUSE Tumbleweed on your machine directory, you just install from this repository. http://download.opensuse.org/repositories/openSUSE:/Tumbleweed/standard/ But, if you want to launch openSUSE Tumbleweed on VirtualBox, that is not enough. You should add the repository below: http://download.opensuse.org/repositories/Virtualization:/VirtualBox_Tumbleweed/

Yet another simple way to associate One-To-One relation and to modify both tables.

2011-05-26T21:33:00.004+09:00

There's a sample to associate One-To-One relation and to modify both tables in ASP.NET MVC3. Creating a More Complex Data Model for an ASP.NET MVC Application (4 of 10) Reading Related Data with the Entity Framework in an ASP.NET MVC Application (5 of 10) But there is some margin for more CoC. So I describe yet another simple way. Associate One-To-One relationNo descriptions in OnModelCreating

Tickets for RubyKaigi2011 are on sale

2011-05-23T19:58:00.001+09:00

From yesterday, Some tickets about RubyKaigi2011 (a.k.a. THE LAST RubyKaigi) were on sale. There are three SKUs for attending this conference. Normal Ticket : A ticket for three day pass. Individual Sponsor : A ticket for three day pass, and an honor as the sponsor. Student Pass : A free ticket for three day pass, if you are a student. In addition to these SKUs, there are one more ticket for

O'Reilly's e-books go DRM free in Japan too.

2011-05-20T20:20:00.000+09:00

E-books on oreilly.co.jp were not DRM free, despite e-books on oreilly.com had been DRM free already. But that is over. In yesterday, oreilly.co.jp announced they made their e-books DRM free (news release in Japanese).

Studying F# : Module

2011-05-17T19:45:00.001+09:00

In F#, there are namespace like C#. But, it is not normal F# way and F#'s namespace is not permitted nested namespaces. The normal F# way is defining module. Declarationmodule Examples let helloWorld() = "Hello World" module Greeting = let helloWorld() = "Hello Module World" module Inner = let helloWorld() = "Hello Inner Module World"Normally, it is enough that there is just one

Studying F# : Generics

2011-05-14T22:09:00.002+09:00

In Java or C#, Generics is written as , T is the type parameter. In F#, it's similar to above, we just write <'a>, 'a is the type parameter. [] type Reflector<'a>() = member r.GetMembers() = let ty = typeof<'a> ty.GetMembers() let rflc = new Reflector() // usage Array.iter (fun it -> System.Console.WriteLine(it.ToString())) (rflc.GetMembers())Function

Studying F# : Interface

2011-05-11T19:57:00.000+09:00

F# has interfaces. we can define it and use it like other object-oriented languages. Definition [] type IDrinker = inherit System.IComparable inherit System.IFormattable abstract Drink : unit -> unit // method definition of interface abstract FavoriteDrink : string // property definition of interfaceInterface can inherit another interfaces multiply. Usage []

Qt 4.7.3 has been released

2011-05-09T18:36:00.011+09:00

A few days ago, Qt Framework 4.7.3 and Qt Creator 2.2 have been released. We can choose for installing the latest Qt either by using QtSDK only or by using each installers (Qt Framework and Qt Creator).

Spring short vacation 2011

2011-04-28T07:44:00.001+09:00

In Japan, last week of April and first week of May are short vacation weeks. Of course, I take a short vacation, so I suspend posts and comments to this blog for a moment. Resume will be May 9, 2011.

Install and Launch MariaDB on Mac OS X

2011-04-26T21:43:00.002+09:00

MariaDB is not ready to install from MacPorts. So should we configure from source in the tarball? No. MariaDB team recommends to build with Bazaar. Read these links: Build Environment Setup for Mac Getting the MariaDB Source Code And there are three more instructions to complete the installation and launch MariaDB. $ sudo mysql_install_db --user=mysql $ sudo /usr/local/share/mysql/mysql.server

F# April 2011 has been released

2011-04-23T22:32:00.000+09:00

F# April 2011 Community Technology Preview has been released. You can download from here.

Enable ASP.NET Web Site Administration Tool with MariaDB on MVC3

2011-04-20T23:19:00.001+09:00

(continued from phosphorescence: Create Simple MVC 3 App with VWDExpress and MariaDB) If you want to use the system built in ASP.NET with MariaDB, you should do some configurations. This article is referring this article. Create schema for aspnetdb on MariaDBLike in this post, create the schema named as aspnetdb and special user for aspnetdb schema. Check some config filesAt first, check

Create Simple MVC 3 App with VWDExpress and MariaDB

2011-04-18T18:54:00.114+09:00

(continued from phosphorescence: Prepare MVC 3 with VWDExpress and MariaDB) Create new MVC 3 projectLaunch Visual Web Development 2010 Express, and at first, set the default development web server as IIS Express. [Tools]-[Options]-[Project or Solution]-[Web projdct], turn on the checkbox. Then, create new MVC 3 project following the wizard. In this sample, I name this project as Mvc3Training. If

Easier way to install F# PowerPack both on Mac OS X and on Linux

2011-04-15T07:42:00.005+09:00

There are the easier way to install F# PowerPack both on Mac OS X and on Linux. After downloading F# PowerPack zip from here, operate like below: $ sudo unzip FSharpPowerPack.zip -d /opt $ cd /opt/FSharpPowerPack-2.0.0.0/bin $ sudo gacutil /i FSharp.Compiler.CodeDom.dll $ sudo gacutil /i FSharp.PowerPack.Build.Tasks.dll $ sudo gacutil /i FSharp.PowerPack.Compatibility.dll $ sudo gacutil /i

Prepare MVC 3 with VWDExpress and MariaDB

2011-04-12T22:13:00.007+09:00

(continued from phosphorescence: Minimal MariaDB configuration on Windows for Express Web Development) Create schema for MVC 3 applicationIn MySQL Workbench, "Start Querying" with root account. Add schema for MVC 3 application. I this sample, I named it as "mvc3_training" Create schema user for MVC 3 applicationLaunch server administration with choosing [Manage Instance]. Then create user, and