Silly mistake on my part, but took me a while before I saw the obvious. If you’re writing a daemon in Ruby using the daemons gem (http://daemons.rubyforge.org) and want to have some code run when your script exits (is stopped by the daemon control), then your first thoughts would be to use the at_exit construct. [...]
It’s easy enough to remove the last character of a string in Ruby, but what about the first? Probably the neatest way is to just extend the String class with two new method thus: class String def chopfirst self[1..-1] end def chopfirst! self.slice!(0) return self end end The first returns the newly shortened string, but [...]
Just been trying to play with the file-tail Gem for Ruby and I kept hitting the same error. #!/usr/bin/env ruby require ‘rubygems’ require ‘file-tail’ filename = ‘/tmp/samplefile.txt’ File.open(filename) do |log| log.extend(File::Tail) log.interval = 10 log.backward(10) log.tail { |line| puts line } end when run would produce /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require’: no such file to load — file-tail [...]
One problem it took me ages to spot was that my test database wasn’t up to date with my migrations and therefore my tests kept failing for no obvious reason! So remember to: rake db:test:prepare To ensure the test database is up to date with migrations, etc.
I was having trouble getting a condition set on a standard find query. I had a table with a boolean column and was expecting to do something like this a = model.find(:all, :conditions => ‘checked = true’) But that (and variations on it) didn’t work, a bit of searching turned up a suitable solution here: [...]
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