JetBrains Fleet
 
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  2. Code reference information

Code reference information

Last modified: 27 February 2025

This section describes how to see definitions of symbols, display documentation references, and use the view parameter information feature.

Parameter info

The popup shows the names of parameters in method and function calls. JetBrains Fleet automatically shows a popup with all available method signatures within 0.5 seconds ( 500 milliseconds) after you type an opening bracket in the editor, or select a method from the suggestion list.

You can explicitly invoke the popup if it has closed or if your IDE is configured not to show the popup automatically. To do so, press Ctrl0I (or click Code | Parameter Info).

View Parameter Info

Configure the parameter info popup

  1. Press Ctrl0, to open settings and select Editor | Appearance.

  2. Select or clear the Show problems or documentation tooltip on hover checkbox.

    To set up the delay for a popup, type the interval in milliseconds in the Tooltip delay field.

    Configure the parameter info popup

Inlay hints

Inlay hints are special markers that appear in the editor and provide you with additional information about your code, like the names of the parameters that a called method expects. Other types of hints inform you about annotations, method parameters, usages, and so on (depending on the language).

Inlay hints

Disable inlay hints

  1. Press Ctrl0, to open settings and select Editor | Appearance.

  2. Select or clear the Show inlay hints checkbox.

    Disable inlay hints

Quick Documentation

You can get quick information for any symbol right from the editor. It shows you code documentation in a popup as you hover over code elements. Note that the symbol must be supplied with documentation comments created in accordance with the markup or with the SDK documentation.

Quick Documentation in a popup

View Quick Documentation in a popup

  • Hover over the necessary symbol in the editor.

  • Place the caret at the symbol and press CtrlShift0I ( Code | Documentation).

    F quick doc popup

Disable Quick Documentation on hover

By default, the quick documentation popup appears as you hover over code elements.

  • Press Ctrl0, to open settings and select Editor | Appearance.

  • Select or clear the Show problems or documentation tooltip on hover checkbox.

    To set up the delay for a popup, type the interval in milliseconds in the Tooltip delay field.

    Configure the parameter info popup

Type Info

In JetBrains Fleet, you can identify the type of an expression.