Ruby Yaml Tutorial

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Ruby yaml tutorial. Welcome to the yaml cookbook for ruby. It is like one big settings page only the options are stored in a written list rather than by a bunch of switches and check boxes. It is far nicer than xml. Now we have the config yaml all that we have to do is use it in our program say you are writing a python program that uses this config file and installs the software.

One of the reasons for its popularity is that the language is human readable intuitive and flexible. Such a tragic end. Pyyaml yaml 1 1 pure python and libyaml binding ruamel yaml yaml 1 2 update of pyyaml with round tripping of comments pysyck yaml 1 0 syck binding strictyaml restricted yaml subset r. So using the yaml syntax we have easily listed the data we will need to feed to our application.

Yaml stands for yaml ain t markup language. Yaml tm is a readable text format for data structures. Yaml has broad language support and maps easily into native data structures. The yaml acronym was shorthand for yet another markup language.

I have posted a newer tutorial which is probably going to be more useful to you than this one. There are libraries available for all mainstream languages including ruby python c java perl c. Now just save this file as config yaml. R yaml libyaml wrapper ruby.

Yaml is a flexible human readable file format that is ideal for storing object trees. The configuration yaml file is the main yaml file used by home assistant to gather all of the information about the users desired configuration. As you ll see below yaml can handle many common data types and structures. Our yaml tutorial includes all topics of yaml such as what is yaml yaml syntax yaml data types yaml styles in which the yaml program will be written the mapping of key.

Yaml in ruby tutorial. I ve used yaml for the example configuration files because yaml has actually become a widely used format for writing configurations files. This version of the yaml cookbook focuses on the ruby implementation of yaml by comparing yaml documents with their ruby counterparts. Yaml data is portable between programming languages.

What is yaml used for in all my tutorial videos for docker kubernetes ansible etc. Yaml includes a markup language with important construct to distinguish data oriented language with the document markup. It is easier to read by humans than json and can contain richer meta data. So you ve got all these tasty ruby objects lying around in memory and they re going to be lost when your program ends.

It s also easy to for humans to read which is why it s a good choice for configuration. The design goals and features of yaml are given below matches native data structures of agile methodology and its languages such as perl python php ruby and javascript. How to use pyyaml to use yaml files.