ruby and YAML

this tutorial walk through processing yaml files with ruby, I will not go explain why, which, or what is yaml4r but I will explain how to load, save, update yaml file using ruby (Yaml4r).

first of all you need to include yaml.rb in your class by adding this: require 'yaml.rb'

In the following we add an array object to yaml file

Step one: loading object from yaml file.
obj = YAML::load(File.open('test.yaml'))

Step two: modifying the object (which is an array) and save it back to the file.
obj << 'anything' File.open('test.yaml', 'w+') { |out| YAML::dump(obj, out) }



A complete code that do so would look like the following: require 'yaml.rb'

obj = YAML::load(File.open('test.yaml'))
if obj
obj << 'anything'
else
obj = ['anything']
end

File.open('test.yaml', 'w+') { |out|
YAML::dump(obj, out)
}