Save your file after calling YAML::dump

Posted by Mike 01/25/2007 at 10:04PM

Not saving a yaml file after calling YAML::dump cost me about two hours the other day. Here’s an example:

# load
fnm='myyaml.yml'
h = YAML::load_file(fnm) || Hash.new
# add to hash
h[:foo]='bar'
#save# load

fnm=‘myyaml.yml’

h = YAML::load_file(fnm) || Hash.new

# add to hash

h[:foo]=‘bar’

#save
=begin

	don’t do it like this …

f = File.open(fnm, ‘w’)

YAML::dump(h, f)

#close writes the file to disk

f.close

=end

# file gets closed after block executes

File.open(fnm, ‘w’) do |out|

   YAML.dump(h, out)

end