JerryWho's posterous

iPhone4 vs. Nexus S

Sun, 19 Dec 2010 03:33:00 -0800

Here's a video from YouTube which compares the flagships in smartphones: Apple's iPhone 4 and Samsung's Nexus S

Posterous via iPhone

Mon, 15 Nov 2010 11:33:04 -0800

Now the iPhone App is available. So let's get it a try. Even if I hate typing on an iPhone. I'm missing the Blackberry keyboard.

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Posterous via iPhone, Part II

Mon, 15 Nov 2010 11:33:00 -0800

Okay, now using the laptop for typing. Just found an error in the app: The times of the posts shown on the iPhone do all have the same (wrong) time.

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From ajax-rdoc to yard

Thu, 04 Nov 2010 12:36:00 -0700

I've updated my railsdoccompilation from ajax-rdoc to yard.

yard is another tool to convert rdocs to html with very much ajax. So you can easily build a local documentation which you can browse with your favorite webbrowser.

I've compiled the docs of the most gems I'm frequently using. If you want feel free and test it. Response is welcome.

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TextMate: Ruby On Rails bundle, partials

Thu, 28 Oct 2010 11:40:00 -0700

When using the Ruby On Rails Textmate Bundle I got an error when generating a partial using the shortcut shift-ctrl-h.

Applications/TextMate.app/Contents/SharedSupport/Support/lib/ui.rb:355:in `to_plist': An object in the argument tree could not be converted (ArgumentError)
from /Applications/TextMate.app/Contents/SharedSupport/Support/lib/ui.rb:355:in `request_string_core'
from /Applications/TextMate.app/Contents/SharedSupport/Support/lib/ui.rb:193:in `request_string'

It seems to me to be a problem of ruby 1.9.x. When using ruby 1.8.7 everything's okay. This got be confirmed by a post by Allan Odgaard himself.

So google was my friend and brought up a solution:

# Updating osx-plist for Ruby 1.9 compatibility
$> git clone git://github.com/kballard/osx-plist.git
$> cd osx-plist/ext/plist
$> ruby extconf.rb && make
$> cp plist.bundle /Applications/TextMate.app/Contents/SharedSupport/Support/lib/osx/

This breaks the function when using ruby 1.8.7 but with 1.9.2 everything's okay.

Update: Unfortunately this breaks other functions like ctrl-h for rdoc :-(

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Once again: TextMate, rdoc and rvm

Sun, 24 Oct 2010 10:32:00 -0700

It seems to me that I did something yesterday that disrupted my ctrl-h function on TextMate once again. I tried several things to reestablish the correct behaviour but I had no luck.

But I learned much about TextMate and rvm/ruby.

First of all I upgraded all my bundles of TextMate. I moved the directory/Library/Application Support/TextMate/Bundles to Bundles.old and got the whole directory from subversion:

svn co http://svn.textmate.org/trunk/Bundles

Then I saw that there is no more a Ruby-Bundle. So I installed it in my user's directory

~/Library/Application Support/TextMate/Bundles/

from github.

I even cloned the repository to fix a bug. My repro is here http://github.com/JerryWho/ruby-tmbundle

The next lesson I learned is that ctrl-h runs Support/bin/linked_ri.rb which itself runs ri. But not the version I told textmate to use. It used the default rvm-ruby-ri version. So I set the TextMate environment variable TM_RUBY_RI to ~/.rvm/bin/textmate_ri

Now the correct version of ri is run.

The cause for the main problem is that ri doesn't support the parameter plain to the option -f anymore. So I changed it html and removed the escaping of any tags (see commit)

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Missing on posterous

Sat, 23 Oct 2010 13:43:00 -0700

There are two things I'm missing on posterous currently:

The first one is that adding another counter other than google analytics doesn't work for me because I'm always losing the javascript code. Maybe there is a work around with escape the javascript.

The other point is a simple css style for formating source code in a post. A simple drop down box to format source code would be great.

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Update: TextMate, rdoc and rvm

Sat, 23 Oct 2010 13:20:00 -0700

Once again I started coding some ruby code using TextMate. But now I installed Ruby 1.9.2 using rvm. As I did some month ago I wanted to use TextMate's ctrl-h to show the ri info for a method or so.

So I installed the latest version of rdoc and rdoc-data. I generated the textmate wrapper as shown here. But this won't work because running

rdoc-data --install

results in an error message:

~/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/fileutils.rb:121:in `chdir': No such file or directory - ~/.rvm/gems/ruby-1.9.2-p0@test/gems/rdoc-data-2.5.3/data/1.9.2 (Errno::ENOENT)

And that's correct because rdoc-data does not yet support ruby 1.9.2 as you can read here.

So I copied ~/.rvm/gems/ruby-1.9.2-p0@test/gems/rdoc-data-2.5.3/data/1.9.1 to ~/.rvm/gems/ruby-1.9.2-p0@test/gems/rdoc-data-2.5.3/data/1.9.2 hoping that the differences between 1.9.1 and 1.9.2 won't matter.

Updating the textmate wrapper

rvm wrapper 1.9.2@mygemset textmate

and everything's just fine.

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Ruby on Rails Tutorial

Fri, 22 Oct 2010 09:07:00 -0700

Just reading across Ruby on Rails Tutorial and doing same steps to refresh my knowledge of Ruby on Rails. I also get the differences of Rails 2.x and 3.x. Thank you, Michael Hartl for this great piece of work.

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Game theory on iTunes U

Sat, 16 Oct 2010 03:21:00 -0700

A few days ago I found some webcasts in iTunes U about Game Theory. Ben Polak gives a wonderul introduction into this amazing part of mathematics, economics and politics. (If you have ever watched Numb3rs you know that Charlie Epps explains every second problem using method out of game theory.)

I just watched only the first few parts. But he is speaking so good that you want to see more and more. He explains e.g. why you should always shoot to the left or right on soccer-penalties and never towards the middle. (His only fault is that he is an Englishman and he thinks that German players should should shoot towards the middle so England will win against Germany. But this will never happen as you can see on this years match. I just say 4-1 ;-)))

Another conclusion is why politicans share mostly a similar opinion and seldom have extreme ones. Or why supermarkets and gas stations are always at the same spot and not evenly distributed.

These webcasts have been recorded at Yale University. I love the idea of public available lectures. So anyone interested in some kind of science has a simple access to those excellent material.

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Netbeans and the "indexing project" problem

Sun, 08 Aug 2010 01:29:00 -0700

I'm using netbeans 6.8 as a php-developer. Every month or so I have to delete the local cache because netbeans is indexing forever consuming 50-100% of CPU.

Now netbeans 6.9.1 was released. So I thought that this problem which appears through all users of netbeans should be solved. But I was wrong. It seems to be even worse. The indexing doesn't stop even after deleting those file-cache. So I switched back to netbeans 6.8 and I'm hoping that this time the indexing will stop. currently it is still running :-(

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Update: TextMate, rdoc and rvm

Sun, 25 Jul 2010 08:59:00 -0700

Even after installing the current version of rdoc in a different gemset everything works just fine. Very strange because I thought the latest version of rdoc was the problem ...

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disabling autopost

Sun, 25 Jul 2010 08:48:00 -0700

Sorry, I played with autopost to post every posting automatically to twitter. But I forgot to disable it because I'm using twitterfeed, too. Now it's been disabled (hopefully).

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TextMate, rdoc and rvm

Sun, 25 Jul 2010 08:26:00 -0700

Using the Ruby-Bundle of TextMate let you ask the ruby built-in documentation of a command by hitting ctrl-h.

But I ran into some troubles when using rvm. I did't get the manual for the method I asked for.

The problem seems to be the current version of rdoc as I found here. So I had to downgrade my rdoc gem from version 2.5.9 downto 2.4.3. But that sounds easier than it was for me. Every time I ran gem uninstall rdoc it wasn't uninstalled. It stayed there. Even if I installed the older version and uninstalled version 2.5.9 rdoc --version brought up 2.5.9.

So I uninstalled my ruby using rvm uninstall 1.8.7 and removed also manually all gems connected with this ruby version in the following directories:

~/.rvm/gemsets/ruby/1.8.7/
~/.rvm/gems

Then I remove rdoc from the files

~/.rvm/gemsets/global.gems
~/.rvm/gemsets/default.gems

Installing ruby 1.8.7 again in rvm with the command rvm install 1.8.7 brought back the ruby version but without the latest rdoc. This one I could reinstall with gem install rdoc --version 2.4.3.

Now TextMate shows the correct help file.

Please see also the update.

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All older iPhone SDKs has gone after updating to XCode 3.2.3

Fri, 23 Jul 2010 18:01:00 -0700

After upgrading Xcode to version 3.2.3 all older versions of the iPhone simulator and the SDKs such as 3.1.2 and 3.1.3 have been gone away. There's just a button with Base SDK missing. You can get it running with Project->Edit Project Settings->General->Base SDK for All Configurations.

Unfortunately this doesn't work on some examples I've got downloaded.

Oh what a mess.

I can understand Apple that they want to force everybody to use the latest versions. But the iPhone 3G isn't really good enough for iOS 4 even if Steve Jobs is telling something other...

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Ruby 1.8.6 going to the Engineyard?

Fri, 23 Jul 2010 06:49:00 -0700

The H-open reports that Ruby 1.8.6 will maybe maintained by engineyard. Currently there are several ruby versions maintained by the community: 1.8.6, 1.8.7 and 1.9.1. Therefor the afford maintaing all those versions may be to big. So engineyard who is using several thousand instances of ruby 1.8.6 according to the article will maybe maintain this version.

That's a similar problem to php 5.2.x. Today the last version of php 5.2.x was released. But there are many sites which can't easily upgrade to php 5.3.x. Most of the 5.2 code should work using 5.3. But there are same traps. See http://www.php.net/manual/de/migration53.incompatible.php

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Red Storm Rising - the time killer of the last millenium

Fri, 23 Jul 2010 04:32:00 -0700

I read an article on golem.de that there will be soon a browser version of "Die Siedler". Die Siedler is a strategic game that has much success espacially in Germany. Many hours have been wasted on building just "another this or that". I'm lucky that I currently not addicted to this game. But it's coming close when there is an online version.

I've been playing Ogame for hours and hours. I've used my alarm clock to wake me up during the night just to save my fleet. But these days are gone, too.

I was just wondering what was the time consumer in those days when there was no online. I just remember two or three games I was playing in my youth on my Atari ST:

All three games has been published by Mircoprose

In Red Storm Rising you are the captain of an US Submarine. You'll have to fight several Russian submarine and surface warships. The graphics is very simple but it was enough to play the game for hours and hours. I spent half an hour to chase an unknown Russian ship, getting closer very slow but quiet. Therefor I did some mathematics before the game. So I got a formula where I put in the bearing, the course and the speed of the enemy and my own maximum speed. I got the course to intercept the enemy without being detected because of cavitation.

Nowadays I would have enough computers on my desktop to calculate with a program. But in the late 1980s I was happy to have one computer. So I used a pen, paper and a calculator.... That was real fun.

I just discoverd that there is a remake of Red Storm Rising for windows. But there seems to be a bunch of work to do. Here you can see two videos the author put on youtube:

and

How would it be if there was an online version of Red Storm Rising? Each vessel is driven by one human player. The guys in the convay could speak to another and see what there sonars has detected....

A dream would come true.

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What's after ruby-koans?

Thu, 22 Jul 2010 09:56:00 -0700

I just finished ruby-koans. As I mentioned earlier it's a test driven tutorial for ruby. As a beginner I learned a lot. But what's coming now? Maybe I will start same Code Reading or I'll take a look at ruby spec. If you have any suggestions what I can also do for learning ruby please feel free and leave a comment (or two or three ;-)

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Twitter client for Mac OS X

Tue, 20 Jul 2010 12:07:00 -0700

I did a short search in google to find a native twitter client for Mac OS X. I downloaded Nambu and Tweetie. I've seen Tweetie quite often as twitter client used for tweets.

But trying both clients I ran into a problem. Both clients can't log in. So it seemed to me that the API of twitter suffered some problems. But as time goes by this problem did, too.

So after playing with both clients for some minutes only I think I'll give Nambo the preference for the next days.

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Mysterious disappearing of a comment on posterous

Tue, 20 Jul 2010 09:50:00 -0700

While I was on vacation the last weeks I received an email that there was a comment to one of my posts on posterous. Now I took a look at this post. And indeed there should be one comment - but there isn't. If I open the comments area I can't see any comment.

In the email I can read the content of the comment. It seems to be on topic. But if I look a deeper look at it it seems to be spam for a dubious website...

So I guess the were more such comments all over posterous and the posterous admins removed all those comments.

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