Ruby Code Insight
Here we speak about the Ruby code insight only, as the sections about code completion or navigation relate to the all the languages supported in RubyMine.
- Syntax highlighting
The RubyMine editor respects highlighting of the keywords, comments, parameters, etc. The particular highlighting colors are defined in the Editor | Color Scheme page of the Settings/Preferences dialog.
- Code completion
RubyMine supports Code completion.
As RubyMine indexes your whole project on each startup, it allows you to autocomplete any existing entity wherever it is defined.
In particular, the types of constructor's parameters are suggested, and as a consequence the fields of a class are also involved:
- Inline hints for parameters
For the function/method calls, the hints for parameters are shown:
Similar hints show arguments grouping if they are passed to a vararg parameter like
- Navigating to declaration
RubyMine allows you to navigate to a location where a particular named code reference has been first declared.
This is done most easily: just put the caret at the symbol in question in the editor and press Ctrl+B:
Refer to the Navigating to Declaration or Type Declaration of a Symbol section for details, and the entire Navigating Through the Source Code section to learn about the other types of navigation.
- Checking regular expressions
If your code contains a regular expression, there is an intention action to check it: just put the caret at the regular expression in question and press Alt+Enter. The RegExp checker shows up, and you have to type the string. If your string doesn't match, the background is red; if it does - green:
Read this section for details.
- RuboCop support
Since RubyMine version 2017.3, you are not only able to fix the whole file with RuboCop, but even choose whether you want to correct all possible offenses, a specific cop department, or even a particular offense type.
To do that, press Alt+Enter:
See RuboCop section.
To help the users never forget about routine tasks, RubyMine provides special notifications, for example:
- Viewing reference documentation
With RubyMine, you don’t need to surf the web every time you stumble across some alias, or search your whole application for a method declaration you can’t remember. Just put the caret on a keyword you want to look up, and hit Ctrl+Q:
See Viewing Inline Documentation for details.