blog.luguber.info » programming

ZenTest er finfint!

jone — Wed, 10 Mar 2010 21:57:10 +0000

Det er mye enklere å teste når testene kjører av seg selv og maser når det må mases. Med ZenTest og test_notifier får du beskjed når ting går galt helt automagisk – og det via libnotify/knotify. For en kjapp oppskrift, se her: getting started with autotest

capistrano ftw

jone — Tue, 25 Nov 2008 21:25:47 +0000

This is just a small nod in the direction of capistrano, the rails deployment machine. It gives great satisfaction to commit your latest fixes to master and run a quick “cap deploy”, and a few seconds later having an up to date server on the other end.
No need to meddle with the server, it is all automagic:)

Now – back to work…

personal ruby buddha machine

jone — Mon, 24 Nov 2008 23:36:27 +0000

Some days ago I came across a post on the FM3 buddha machine. Finding it a fascinating concept, and being able to download their samples I sprinkled a few lines of ruby over them an stirred. Voilà – my own personal buddha machine playing wonderful ambient soundscapes in a random fashion. Using the sdl_ruby library, the whole thing became surprisingly simple:

#!/usr/bin/ruby -w
require 'sdl'
SDL.init(SDL::INIT_AUDIO)
SDL::Mixer.open(44100,SDL::Mixer::DEFAULT_FORMAT,2,4096)
 
clips = Dir.new('audio').entries.delete_if {|x| ! (x =~ /wav$/)}
while true
        for i in 1..SDL::Mixer.allocate_channels(4)
                        if not SDL::Mixer.play?(i)
                                SDL::Mixer.playChannel(i,SDL::Mixer::Wave.load("audio/"+clips[rand(clips.length)]),rand(30))
                        end
        end
        sleep 0.5
end

Numerical sorting in ruby

jone — Wed, 19 Nov 2008 13:36:53 +0000

Quick note on how to do numerical sorting in ruby.
When calling sort, ruby will perform a lexicographical sorting by default, meaning that the following array

1 2	a=["0","10","9","1"] a.sort.each{\|val\| p val}

will output

"0"
"1"
"10"
"9"

If this is not what you want, this might be it:

1	a.sort{\|x,y\| x.to_i < => y.to_i}.each { \|val\| p val }

outputs:

"0"
"1"
"9"
"10"

Yay, blocks to the rescue:)

CSS/Rails

jone — Mon, 15 Sep 2008 07:14:29 +0000

Notat til meg selv:
bruk

<%= stylesheet_link_tag "cssfil" %>

for å inkludere css, så slipper man trøblete proxy-servere som bare vil servere gamle versjoner.