valibuk.net

Do you enjoy the new style of this blog? :)

Páči sa vám nový štýl tohto blogu? :)

A bug in Google Maps.

Hehe ;)

With a migration you can create a table or insert data to a table, also there is a possibility to modify existing tables; from renaming tables to changing the type of a column. And what about constraint such as default value or not null?

Yeah, you can change them too, but I was only successful with adding them — removing them was not possible with standard Rails methods.
(There is more where this came from … )

In my post about using the observe_field helper for observing more fields I used the escape method (on the client side).

I have found out the code does not work correctly with Unicode characters :(
(There is more where this came from … )

I use my notebook mainly on two places: work and home. Each of this places has different network configurations — at work I have a fixed IP, at home I have a DHCP server.

Actually there is a very nice application for changing network configurations (or, if you like, profiles) — QuickSwitch (emerge quickswitch).
(There is more where this came from … )

Arrrrgh… It was like a torture! The harddrive in an only-few-days-old notebook (Dell Latitude D820) was producing an annoying clicking sound.

Click… 10 seconds…. CLICK…. 9 seconds…. CLICK
(There is more where this came from … )

Hurrah :) This week week I got a new notebook. Yeah, it took one month (meanwhile I was reading the Programming Ruby book, so it was quite short month; it is a nice book, I can only recommend it ;).

But back to the notebook. I installed Gentoo on it and I wrote a short howto.

The cp command does not provide any exclude functionality. There is a nice way how to achieve it:

(cd "./${SRCIN_DIR}" && tar cpf - --exclude=.svn . ) | (cd "./${DEST_DIR}" && tar xpf - )

Filtering is basically about writing conditions. In most cases the number of conditions is fixed, e.g. an internal filter in an application. Then it is quite easy to prepare a value for the conditions parameter.

But what to do if a number of conditions may vary? It is not a good idea to pass an empty value, because an empty value is still a valid value. We have to somehow implicitly say that a condition with an empty value should not be taken into a filtering process at all.
(There is more where this came from … )

Did you install Flash plug-in into Firefox on Ubuntu or Kubuntu? Do you see any text in Flash applications such as Google Analytics graphs? No?

Try this :)
sudo apt-get install gsfonts-x11