2009 February | Freddy Duarte

e.g. vs. i.e.

February 25th, 2009

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What do you know, Freddy Duarte blogging about the Engl… Latin idiom.

e.g. = exempli gratia = for the sake of example
i.e. = illud est = that is to say

Example of e.g. : “Electronic EMO/Rock bands suck (e.g. NIN, The Jonas Brothers).

Example of i.e. : “On the other side, bands that carry talented musicians are good for the ear (i.e. MUSE, Metallica, Opeth).

Example of hilarity: “This isn’t a post about music (i.e. anything not NIN).”

Random

A woman didn’t come home one night. The next day she told her husband that she had slept over at a girlfriend’s house. The man called his wife’s 10 best friends. Not one of them knew anything about it.

Friendship Among Men:

A man didn’t come home one night. The next day he told his wife that he had slept over at a buddy’s house. The woman called her husband’s 10 best friends. Eight of them confirmed that he had slept over, and two claimed that he was still there.

Source

http://johns-jokes.com/joke/show/484/

Funny

Fix arrow keys in IRB in Ubuntu

February 19th, 2009

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Issue

If you’re a rails programmer in Ubuntu, odds are you’re going to encounter some issues while trying to use your arrow keys inside IRB (Interactive Ruby), and this particular problem will also affect script/console.

Arrow keys don’t work in IRB
Can’t load script/console

Symptoms

If you try to launch your console, the following errors will appear. As you can tell, we’ve got a library missing – “readline”.

 script/console
Loading development environment (Rails 2.2.2)
/usr/local/lib/ruby/1.8/irb/completion.rb:10:in `require': no such file to load -- readline (LoadError)
	from /usr/local/lib/ruby/1.8/irb/completion.rb:10
	from /usr/local/lib/ruby/1.8/irb/init.rb:252:in `require'
	from /usr/local/lib/ruby/1.8/irb/init.rb:252:in `load_modules'
	from /usr/local/lib/ruby/1.8/irb/init.rb:250:in `each'
	from /usr/local/lib/ruby/1.8/irb/init.rb:250:in `load_modules'
	from /usr/local/lib/ruby/1.8/irb/init.rb:21:in `setup'
	from /usr/local/lib/ruby/1.8/irb.rb:54:in `start'
	from /usr/local/bin/irb:13

Fix

Marinate your keyboard with some Dr. Pepper. For best results, use beer. NO! Buy a MAC. NO! I joke . MACS are expensive.

Fix it this way:

Install the readline library: sudo apt-get install libreadline5 libreadline5-dev
Compile the library: cd into the “ext/readline” inside your ruby installation. It’s probably under “/usr/local/src”, but you’ll definitely need to figure this one on your own.
sudo ruby extconf.rb
sudo make
sudo make install
Re-launch IRB and script/console and it should work!