ri: Ruby Interactive Reference
ri is a online reference tool developed by Dave Thomas, the famous pragmatic programmer.
When you have a question about the behavior of a certain method, you can invoke ri to read the brief explanation of the method.
You can get ri from ri: Ruby Interactive
Here is simple syntax to use ri
ri [ options ] [ methodname... ]
Here is a complete list of options:
|SN||Command with Description|
Displays version and exits.
Sets the line length for the output (minimum is 30 characters).
Displays just a synopsis.
Uses the name module (default is Plain) for output formatting. Here are the available modules:
name should be specified in any of the following forms: