Code coverage enables you to see exactly what parts of your code are executed during single or multiple runs. It's an invaluable asset for detecting dead code, ensuring that every line of your code serves a purpose.

Key Advantages:

• Detailed Execution Insights: track which parts of your code are being used and which are not during execution.
• Dead Code Detection: easily identify and remove code that is never executed, streamlining your application.

How to use:

Click the run icon in the gutter and select Run <run/debug configuration name> with Coverage. For additional options to run code coverage, refer to Running with coverage.

New in 2023.3

Try a code folding feature to enhance the readability and navigability of your Go code. This feature is especially useful for managing large codebases and focusing on the overall structure of your code.

Target Code Blocks for Folding:

• One-line if blocks with a single return
• One-line if blocks with a single panic
• One-line if blocks for error handling
• One-line functions with a single return
• One-line case clauses
• Formatted strings

How to use:

To fold or unfold a code block, simply click on the fold marker next to the line number or use a keyboard shortcut. You can also use ⌘- (macOS) / Ctrl+Minus (Windows/Linux) to fold and ⌘+ (macOS) / Ctrl+Plus (Windows/Linux) to unfold. Hovering over a folded code block will display a tooltip with a preview of the hidden content. This feature can be customized in settings to choose which types of blocks are foldable according to user preference.

New in 2023.3

GoLand introduces an innovative feature: the Create Function Quick-Fix. This quick-fix significantly accelerates the development process by allowing you to type a non-existing function name and then effortlessly generate its implementation in a package of your choice.

How it Works:

Start by typing the name of a function that does not yet exist in your code. Click a light bulb icon that appears in the editor or use the keyboard shortcut ⌥⏎ (macOS) / Alt+Enter (Windows/Linux) to activate the quick-fix. Select the package where you want to generate the new function.

The Create Parameter quick-fix for unresolved references allows you to create parameters directly from unresolved references in your code.

How it Works:

Locate a reference in your code that is currently unresolved (indicated by red code). Click a light bulb icon that will appear near the unresolved reference or use the keyboard shortcut ⌥⏎ (macOS) / Alt+Enter (Windows/Linux) to open the quick-fix options. Select the Create Parameter quick-fix. Modify the automatically suggested settings for the parameters in the Change Signature dialog and click Refactor. The IDE will add new parameters to a function or method signature.

This feature automatically identifies Printf-like functions and offers comprehensive coding assistance, including inspections, quick-fixes, spellchecking, highlighting, and code folding. If you want to exclude a function from the list of Printf-like functions, navigate to Settings | Go | Formatting Functions, and add it to the list of exceptions. For more information, refer to Formatting strings.