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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
Usage Syntax:
Here is simple syntax to use ri
ri [ options ] [ methodname... ]
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Here is a complete list of options:
SN | Command with Description |
1 | --version,
-v Displays version and exits. |
1 | --line-length=n
-l n Sets the line length for the output (minimum is 30 characters). |
2 | --synopsis
-s Displays just a synopsis. |
3 | --format= name
-f name Uses the name module (default is Plain) for output formatting. Here are the
available modules:
- Tagged: Simple tagged output
- Plain: Default plain output
name should be specified in any of the following forms:
- Class
- Class::method
- Class#method
- Class.method
- method
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