GoLand 2020.3 Help

Code reference information

Definitions

In GoLand, you can see where and how symbols, such as structs, interfaces, methods, or functions are defined in your project. For this purpose, the IDE features the Quick Definition popup.

  • To view definition of a symbol, select it in the editor and press Ctrl+Shift+I (or click View | Quick Definition).

Quick Definition popup

Alternatively, with the Ctrl key pressed, hover the cursor over any symbol. GoLand displays the symbol as a link and shows its definition in a tooltip. Click this link to jump to the definition of the symbol.

Jump to the selected definition

Click the Open in Find tool window icon in the top-right corner to open the definition in the Find tool window. To open the source code of the definition for editing and close the popup, click the Edit Source icon F4. To open the definition without closing the popup, click the Show Source Ctrl+Enter.

Parameter info

The Parameter Info popup shows the names of parameters in method and function calls. GoLand automatically shows a popup with all available method signatures within 1 second (1000 milliseconds) after you type an opening bracket in the editor, or select a method from the suggestions 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 Ctrl+P (or click View | Parameter Info).

View Parameter Info

Configure the parameter info popup

  1. In the Settings/Preferences dialog Ctrl+Alt+S, go to Editor | General | Code Completion.

  2. In the Show the parameter info popup in ... milliseconds field, specify the time in milliseconds after which the popup should appear.

If you don't want the popup to appear automatically, clear the Show the parameter info popup in ... milliseconds checkbox.

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).

Parameter hints

Some of the hints are enabled by default.

You can fine-tune inlay hints in Settings/Preferences | Editor | Inlay Hints.

Configure the parameter hints exception list

You can configure the list with exceptions for parameter hints.

  1. In the Settings/Preferences dialog Ctrl+Alt+S, select Editor | Inlay Hints and click the necessary language.

  2. Select Parameter hints in the list in the middle section.

    The options for configuring hints become available on the right.

  3. Add cases for which you do not want to see the hints to the Blacklist section. To add a case, click the inline hint in your code, press Alt+Enter and select Do not show hints for current method.

  4. Apply the changes and close the dialog.

    Configure the parameter hints exception list

Quick documentation

You can get quick information for any symbol or method signature by means of the Quick Documentation popup.

  • Hover the mouse over the necessary symbol to view its documentation, or place the caret at the symbol, and press Ctrl+Q (View | Quick Documentation).

    Press Ctrl+Q again to switch between the popup and the toolbar.

    Quick Documentation popup

Click the Show Options Menu icon in the popup to change the font size, display the quick documentation toolbar, or go to the source code.

Disable quick documentation on mouseover

  • In the Settings/Preferences dialog Ctrl+Alt+S, go to Editor | Code Editing | Quick Documentation and clear the Show quick documentation on mouse move checkbox.

    You can also click the Show Options Menu icon in the popup and disable the Show on Mouse Move option.

In this case, to view documentation for a symbol at caret, press Ctrl+Q or select View | Quick Documentation from the main menu.

External documentation

External documentation opens the necessary information in a web browser, so that you can navigate to related symbols and keep the information for further reference at the same time. The External Documentation action navigates you to https://pkg.go.dev.

View external documentation

  • To view documentation for a symbol at the current caret position in a web browser, press Shift+F1 or select View | External documentation from the main menu.

Type info

In GoLand, you can view the type of any variable or expression in a popup. This is helpful if you don't need the full information on the code element.

  • Place the caret at the necessary code element and press Ctrl+Shift+P (or select View | Type Info from the main menu).

Showing the expression type info

Productivity tips

Copy tooltip text to the clipboard

To copy tooltip text to the clipboard, hold Alt (on Linux, hold Ctrl+Alt) and click the tooltip.

Last modified: 19 August 2020